Call us FREE on 0800 488 000
X
X

Please Log In Below

Forgotten Password?
Retry
Login
loading Gif
Sorry! You can't edit your cart on this page.
Sorry! This item could not be added to your cart as it is no longer available from Comms Express.
Please check the quantity you are adding and try again.
The following item has been added to your cart.
Product Code:
Options:
Qty:
Unit Price:£
View Cart
Checkout
Your cart is empty.
Subtotal:
£0
Remove all items from cart
Are you sure? Yes No
Learn more about how
to collect Data Points
for free gifts.
Comms Express Finance Options
Request A Quote
View Cart
Checkout
Cookie Policy×

Hi there! Our website may store cookies on your computer in order to give you the best experience, such as remembering the items in your cart so you can continue shopping where you left off.

By continuing to use our site, you give consent for cookies to be used.

Browse Categories
Riello S3T 10 ACT A0 10kVA S3T Active UPS
Riello Logo
with No Internal Batteries



Overview Sentryum is Riello UPS’s third generation of transformerless ONLINE UPS. Delivering outstanding performance and up to 96.5% efficiency in a compact footprint, it’s a proven solution for smaller data centres and similar applications.

Now available in 10-15-20-30-40 kVA models, choose from 3 different cabinet sizes to maximise your battery autonomy and make the most of your valuable floor space.

Designed to handle capacitive loads like blade servers without any reduction in active power.



Highlights Choice of 3 cabinet sizes (Compact, Active, Xtend) to maximise battery runtime
96.5% operating efficiency (ONLINE mode) reduces energy waste
High overload and short circuit capacity guarantees availability
Parallel up to 8 UPS for extra capacity or redundancy
Large touchscreen display and LED status indicator
Fantastic Flexibility Sentryum offers you a choice of power ranges and cabinet sizes, making this versatile series suitable for several mission-critical environments. Select from 3 frames to suit your space and battery requirements:

Compact (CPT)

70 cm x 28 cm x 84 cm (H x W x D)
0.25m² footprint
1 internal battery string - space for 40 blocks
Available for 10-15-20 kVA versions only; not available for 30-40 kVA versions
Active (ACT)

102.5 cm x 38 cm x 85 cm (H x W x D)
0.35m² footprint
1-2 internal battery strings - space for 2x40 blocks
Available for all versions
Xtend (XTD)

132 cm x 44 cm x 84 cm (H x W x D)
0.25m² footprint
3 internal battery strings - space for 3x40 blocks
Optional isolation transformers
Available for all versions
Available as 1-phase/3-phase input, 1-phase output or 3-phase input and output.

Reliable And Efficient Our transformerless UPS delivers unity power (pf 1) and operating efficiency of up to 96.5%, which helps you minimise wasted energy. It features a unique control system that reduces harmonic voltage distortion (<1% at resistive load and < 1.5% at non-linear load).

The Sentryum can also handle high overloads (125% for 10 minutes or 150% for 1 minute) and short circuits (270% for 200ms or 150% for 300ms), meaning you won’t have to transfer to bypass to deal with sudden peak loads.

Scalable Power Easily increase your power or battery autonomy by installing up to 8 Sentryum UPS in parallel (3-phase version).

Parallel installations operate on a closed-loop system, so your UPS will keep running even if there’s an issue or disruption with your cable connection.

Enhanced Performance Sentryum builds on previous Riello UPS transformerless series such as the Multi Sentry (MST), with an optimised card layout that reduces the number of components, cables, and interconnections.

This reduces the amount of installation space your UPS will need and makes it far easier and more cost-effective to maintain.

Power At Your Fingertips Take control with a 5-inch colour touchscreen display panel which clearly shows real-time information and allows you to easily adjust the operating mode.

Also features an innovative new LED status indicator which automatically changes colour depending on the current operating mode and UPS status. In-built wheels enable easy manoeuvrability.

Express View Logo
In Stock: 1-2 Days
£2888.41
£3466.09 Inc Vat
Add To Cart
Riello S3T 10 ACT S2 10kVA S3T Active UPS
Riello Logo
with 11 minutes runtime at full load



Overview Sentryum is Riello UPS’s third generation of transformerless ONLINE UPS. Delivering outstanding performance and up to 96.5% efficiency in a compact footprint, it’s a proven solution for smaller data centres and similar applications.

Now available in 10-15-20-30-40 kVA models, choose from 3 different cabinet sizes to maximise your battery autonomy and make the most of your valuable floor space.

Designed to handle capacitive loads like blade servers without any reduction in active power.



Highlights Choice of 3 cabinet sizes (Compact, Active, Xtend) to maximise battery runtime
96.5% operating efficiency (ONLINE mode) reduces energy waste
High overload and short circuit capacity guarantees availability
Parallel up to 8 UPS for extra capacity or redundancy
Large touchscreen display and LED status indicator
Fantastic Flexibility Sentryum offers you a choice of power ranges and cabinet sizes, making this versatile series suitable for several mission-critical environments. Select from 3 frames to suit your space and battery requirements:

Compact (CPT)

70 cm x 28 cm x 84 cm (H x W x D)
0.25m² footprint
1 internal battery string - space for 40 blocks
Available for 10-15-20 kVA versions only; not available for 30-40 kVA versions
Active (ACT)

102.5 cm x 38 cm x 85 cm (H x W x D)
0.35m² footprint
1-2 internal battery strings - space for 2x40 blocks
Available for all versions
Xtend (XTD)

132 cm x 44 cm x 84 cm (H x W x D)
0.25m² footprint
3 internal battery strings - space for 3x40 blocks
Optional isolation transformers
Available for all versions
Available as 1-phase/3-phase input, 1-phase output or 3-phase input and output.

Reliable And Efficient Our transformerless UPS delivers unity power (pf 1) and operating efficiency of up to 96.5%, which helps you minimise wasted energy. It features a unique control system that reduces harmonic voltage distortion (<1% at resistive load and < 1.5% at non-linear load).

The Sentryum can also handle high overloads (125% for 10 minutes or 150% for 1 minute) and short circuits (270% for 200ms or 150% for 300ms), meaning you won’t have to transfer to bypass to deal with sudden peak loads.

Scalable Power Easily increase your power or battery autonomy by installing up to 8 Sentryum UPS in parallel (3-phase version).

Parallel installations operate on a closed-loop system, so your UPS will keep running even if there’s an issue or disruption with your cable connection.

Enhanced Performance Sentryum builds on previous Riello UPS transformerless series such as the Multi Sentry (MST), with an optimised card layout that reduces the number of components, cables, and interconnections.

This reduces the amount of installation space your UPS will need and makes it far easier and more cost-effective to maintain.

Power At Your Fingertips Take control with a 5-inch colour touchscreen display panel which clearly shows real-time information and allows you to easily adjust the operating mode.

Also features an innovative new LED status indicator which automatically changes colour depending on the current operating mode and UPS status. In-built wheels enable easy manoeuvrability.

Express View Logo
In Stock: 1-2 Days
£3534.41
£4241.29 Inc Vat
Add To Cart
Riello S3T 10 ACT T4 10kVA S3T Active UPS
Riello Logo
with 27 minutes runtime at full load



Overview Sentryum is Riello UPS’s third generation of transformerless ONLINE UPS. Delivering outstanding performance and up to 96.5% efficiency in a compact footprint, it’s a proven solution for smaller data centres and similar applications.

Now available in 10-15-20-30-40 kVA models, choose from 3 different cabinet sizes to maximise your battery autonomy and make the most of your valuable floor space.

Designed to handle capacitive loads like blade servers without any reduction in active power.



Highlights Choice of 3 cabinet sizes (Compact, Active, Xtend) to maximise battery runtime
96.5% operating efficiency (ONLINE mode) reduces energy waste
High overload and short circuit capacity guarantees availability
Parallel up to 8 UPS for extra capacity or redundancy
Large touchscreen display and LED status indicator
Fantastic Flexibility Sentryum offers you a choice of power ranges and cabinet sizes, making this versatile series suitable for several mission-critical environments. Select from 3 frames to suit your space and battery requirements:

Compact (CPT)

70 cm x 28 cm x 84 cm (H x W x D)
0.25m² footprint
1 internal battery string - space for 40 blocks
Available for 10-15-20 kVA versions only; not available for 30-40 kVA versions
Active (ACT)

102.5 cm x 38 cm x 85 cm (H x W x D)
0.35m² footprint
1-2 internal battery strings - space for 2x40 blocks
Available for all versions
Xtend (XTD)

132 cm x 44 cm x 84 cm (H x W x D)
0.25m² footprint
3 internal battery strings - space for 3x40 blocks
Optional isolation transformers
Available for all versions
Available as 1-phase/3-phase input, 1-phase output or 3-phase input and output.

Reliable And Efficient Our transformerless UPS delivers unity power (pf 1) and operating efficiency of up to 96.5%, which helps you minimise wasted energy. It features a unique control system that reduces harmonic voltage distortion (<1% at resistive load and < 1.5% at non-linear load).

The Sentryum can also handle high overloads (125% for 10 minutes or 150% for 1 minute) and short circuits (270% for 200ms or 150% for 300ms), meaning you won’t have to transfer to bypass to deal with sudden peak loads.

Scalable Power Easily increase your power or battery autonomy by installing up to 8 Sentryum UPS in parallel (3-phase version).

Parallel installations operate on a closed-loop system, so your UPS will keep running even if there’s an issue or disruption with your cable connection.

Enhanced Performance Sentryum builds on previous Riello UPS transformerless series such as the Multi Sentry (MST), with an optimised card layout that reduces the number of components, cables, and interconnections.

This reduces the amount of installation space your UPS will need and makes it far easier and more cost-effective to maintain.

Power At Your Fingertips Take control with a 5-inch colour touchscreen display panel which clearly shows real-time information and allows you to easily adjust the operating mode.

Also features an innovative new LED status indicator which automatically changes colour depending on the current operating mode and UPS status. In-built wheels enable easy manoeuvrability.

Express View Logo
In Stock: 1-2 Days
£4180.41
£5016.49 Inc Vat
Add To Cart
Riello S3T 15 ACT A0 15kVA S3T Active UPS
Riello Logo
with No Internal Batteries



Overview Sentryum is Riello UPS’s third generation of transformerless ONLINE UPS. Delivering outstanding performance and up to 96.5% efficiency in a compact footprint, it’s a proven solution for smaller data centres and similar applications.

Now available in 10-15-20-30-40 kVA models, choose from 3 different cabinet sizes to maximise your battery autonomy and make the most of your valuable floor space.

Designed to handle capacitive loads like blade servers without any reduction in active power.



Highlights Choice of 3 cabinet sizes (Compact, Active, Xtend) to maximise battery runtime
96.5% operating efficiency (ONLINE mode) reduces energy waste
High overload and short circuit capacity guarantees availability
Parallel up to 8 UPS for extra capacity or redundancy
Large touchscreen display and LED status indicator
Fantastic Flexibility Sentryum offers you a choice of power ranges and cabinet sizes, making this versatile series suitable for several mission-critical environments. Select from 3 frames to suit your space and battery requirements:

Compact (CPT)

70 cm x 28 cm x 84 cm (H x W x D)
0.25m² footprint
1 internal battery string - space for 40 blocks
Available for 10-15-20 kVA versions only; not available for 30-40 kVA versions
Active (ACT)

102.5 cm x 38 cm x 85 cm (H x W x D)
0.35m² footprint
1-2 internal battery strings - space for 2x40 blocks
Available for all versions
Xtend (XTD)

132 cm x 44 cm x 84 cm (H x W x D)
0.25m² footprint
3 internal battery strings - space for 3x40 blocks
Optional isolation transformers
Available for all versions
Available as 1-phase/3-phase input, 1-phase output or 3-phase input and output.

Reliable And Efficient Our transformerless UPS delivers unity power (pf 1) and operating efficiency of up to 96.5%, which helps you minimise wasted energy. It features a unique control system that reduces harmonic voltage distortion (<1% at resistive load and < 1.5% at non-linear load).

The Sentryum can also handle high overloads (125% for 10 minutes or 150% for 1 minute) and short circuits (270% for 200ms or 150% for 300ms), meaning you won’t have to transfer to bypass to deal with sudden peak loads.

Scalable Power Easily increase your power or battery autonomy by installing up to 8 Sentryum UPS in parallel (3-phase version).

Parallel installations operate on a closed-loop system, so your UPS will keep running even if there’s an issue or disruption with your cable connection.

Enhanced Performance Sentryum builds on previous Riello UPS transformerless series such as the Multi Sentry (MST), with an optimised card layout that reduces the number of components, cables, and interconnections.

This reduces the amount of installation space your UPS will need and makes it far easier and more cost-effective to maintain.

Power At Your Fingertips Take control with a 5-inch colour touchscreen display panel which clearly shows real-time information and allows you to easily adjust the operating mode.

Also features an innovative new LED status indicator which automatically changes colour depending on the current operating mode and UPS status. In-built wheels enable easy manoeuvrability.

Express View Logo
In Stock: 1-2 Days
£3084.44
£3701.33 Inc Vat
Add To Cart
Riello S3T 15 ACT S2 15kVA S3T Active UPS
Riello Logo
with 6 minutes runtime at full load



Overview Sentryum is Riello UPS’s third generation of transformerless ONLINE UPS. Delivering outstanding performance and up to 96.5% efficiency in a compact footprint, it’s a proven solution for smaller data centres and similar applications.

Now available in 10-15-20-30-40 kVA models, choose from 3 different cabinet sizes to maximise your battery autonomy and make the most of your valuable floor space.

Designed to handle capacitive loads like blade servers without any reduction in active power.



Highlights Choice of 3 cabinet sizes (Compact, Active, Xtend) to maximise battery runtime
96.5% operating efficiency (ONLINE mode) reduces energy waste
High overload and short circuit capacity guarantees availability
Parallel up to 8 UPS for extra capacity or redundancy
Large touchscreen display and LED status indicator
Fantastic Flexibility Sentryum offers you a choice of power ranges and cabinet sizes, making this versatile series suitable for several mission-critical environments. Select from 3 frames to suit your space and battery requirements:

Compact (CPT)

70 cm x 28 cm x 84 cm (H x W x D)
0.25m² footprint
1 internal battery string - space for 40 blocks
Available for 10-15-20 kVA versions only; not available for 30-40 kVA versions
Active (ACT)

102.5 cm x 38 cm x 85 cm (H x W x D)
0.35m² footprint
1-2 internal battery strings - space for 2x40 blocks
Available for all versions
Xtend (XTD)

132 cm x 44 cm x 84 cm (H x W x D)
0.25m² footprint
3 internal battery strings - space for 3x40 blocks
Optional isolation transformers
Available for all versions
Available as 1-phase/3-phase input, 1-phase output or 3-phase input and output.

Reliable And Efficient Our transformerless UPS delivers unity power (pf 1) and operating efficiency of up to 96.5%, which helps you minimise wasted energy. It features a unique control system that reduces harmonic voltage distortion (<1% at resistive load and < 1.5% at non-linear load).

The Sentryum can also handle high overloads (125% for 10 minutes or 150% for 1 minute) and short circuits (270% for 200ms or 150% for 300ms), meaning you won’t have to transfer to bypass to deal with sudden peak loads.

Scalable Power Easily increase your power or battery autonomy by installing up to 8 Sentryum UPS in parallel (3-phase version).

Parallel installations operate on a closed-loop system, so your UPS will keep running even if there’s an issue or disruption with your cable connection.

Enhanced Performance Sentryum builds on previous Riello UPS transformerless series such as the Multi Sentry (MST), with an optimised card layout that reduces the number of components, cables, and interconnections.

This reduces the amount of installation space your UPS will need and makes it far easier and more cost-effective to maintain.

Power At Your Fingertips Take control with a 5-inch colour touchscreen display panel which clearly shows real-time information and allows you to easily adjust the operating mode.

Also features an innovative new LED status indicator which automatically changes colour depending on the current operating mode and UPS status. In-built wheels enable easy manoeuvrability.

Express View Logo
In Stock: 1-2 Days
£3730.44
£4476.53 Inc Vat
Add To Cart
Riello S3T 15 ACT T4 15kVA S3T Active UPS
Riello Logo
with 16 minutes runtime at full load



Overview Sentryum is Riello UPS’s third generation of transformerless ONLINE UPS. Delivering outstanding performance and up to 96.5% efficiency in a compact footprint, it’s a proven solution for smaller data centres and similar applications.

Now available in 10-15-20-30-40 kVA models, choose from 3 different cabinet sizes to maximise your battery autonomy and make the most of your valuable floor space.

Designed to handle capacitive loads like blade servers without any reduction in active power.



Highlights Choice of 3 cabinet sizes (Compact, Active, Xtend) to maximise battery runtime
96.5% operating efficiency (ONLINE mode) reduces energy waste
High overload and short circuit capacity guarantees availability
Parallel up to 8 UPS for extra capacity or redundancy
Large touchscreen display and LED status indicator
Fantastic Flexibility Sentryum offers you a choice of power ranges and cabinet sizes, making this versatile series suitable for several mission-critical environments. Select from 3 frames to suit your space and battery requirements:

Compact (CPT)

70 cm x 28 cm x 84 cm (H x W x D)
0.25m² footprint
1 internal battery string - space for 40 blocks
Available for 10-15-20 kVA versions only; not available for 30-40 kVA versions
Active (ACT)

102.5 cm x 38 cm x 85 cm (H x W x D)
0.35m² footprint
1-2 internal battery strings - space for 2x40 blocks
Available for all versions
Xtend (XTD)

132 cm x 44 cm x 84 cm (H x W x D)
0.25m² footprint
3 internal battery strings - space for 3x40 blocks
Optional isolation transformers
Available for all versions
Available as 1-phase/3-phase input, 1-phase output or 3-phase input and output.

Reliable And Efficient Our transformerless UPS delivers unity power (pf 1) and operating efficiency of up to 96.5%, which helps you minimise wasted energy. It features a unique control system that reduces harmonic voltage distortion (<1% at resistive load and < 1.5% at non-linear load).

The Sentryum can also handle high overloads (125% for 10 minutes or 150% for 1 minute) and short circuits (270% for 200ms or 150% for 300ms), meaning you won’t have to transfer to bypass to deal with sudden peak loads.

Scalable Power Easily increase your power or battery autonomy by installing up to 8 Sentryum UPS in parallel (3-phase version).

Parallel installations operate on a closed-loop system, so your UPS will keep running even if there’s an issue or disruption with your cable connection.

Enhanced Performance Sentryum builds on previous Riello UPS transformerless series such as the Multi Sentry (MST), with an optimised card layout that reduces the number of components, cables, and interconnections.

This reduces the amount of installation space your UPS will need and makes it far easier and more cost-effective to maintain.

Power At Your Fingertips Take control with a 5-inch colour touchscreen display panel which clearly shows real-time information and allows you to easily adjust the operating mode.

Also features an innovative new LED status indicator which automatically changes colour depending on the current operating mode and UPS status. In-built wheels enable easy manoeuvrability.

Express View Logo
In Stock: 1-2 Days
£4376.97
£5252.36 Inc Vat
Add To Cart
Riello S3T 20 ACT A0 20kVA S3T Active UPS
Riello Logo
with No Internal Batteries



Overview Sentryum is Riello UPS’s third generation of transformerless ONLINE UPS. Delivering outstanding performance and up to 96.5% efficiency in a compact footprint, it’s a proven solution for smaller data centres and similar applications.

Now available in 10-15-20-30-40 kVA models, choose from 3 different cabinet sizes to maximise your battery autonomy and make the most of your valuable floor space.

Designed to handle capacitive loads like blade servers without any reduction in active power.



Highlights Choice of 3 cabinet sizes (Compact, Active, Xtend) to maximise battery runtime
96.5% operating efficiency (ONLINE mode) reduces energy waste
High overload and short circuit capacity guarantees availability
Parallel up to 8 UPS for extra capacity or redundancy
Large touchscreen display and LED status indicator
Fantastic Flexibility Sentryum offers you a choice of power ranges and cabinet sizes, making this versatile series suitable for several mission-critical environments. Select from 3 frames to suit your space and battery requirements:

Compact (CPT)

70 cm x 28 cm x 84 cm (H x W x D)
0.25m² footprint
1 internal battery string - space for 40 blocks
Available for 10-15-20 kVA versions only; not available for 30-40 kVA versions
Active (ACT)

102.5 cm x 38 cm x 85 cm (H x W x D)
0.35m² footprint
1-2 internal battery strings - space for 2x40 blocks
Available for all versions
Xtend (XTD)

132 cm x 44 cm x 84 cm (H x W x D)
0.25m² footprint
3 internal battery strings - space for 3x40 blocks
Optional isolation transformers
Available for all versions
Available as 1-phase/3-phase input, 1-phase output or 3-phase input and output.

Reliable And Efficient Our transformerless UPS delivers unity power (pf 1) and operating efficiency of up to 96.5%, which helps you minimise wasted energy. It features a unique control system that reduces harmonic voltage distortion (<1% at resistive load and < 1.5% at non-linear load).

The Sentryum can also handle high overloads (125% for 10 minutes or 150% for 1 minute) and short circuits (270% for 200ms or 150% for 300ms), meaning you won’t have to transfer to bypass to deal with sudden peak loads.

Scalable Power Easily increase your power or battery autonomy by installing up to 8 Sentryum UPS in parallel (3-phase version).

Parallel installations operate on a closed-loop system, so your UPS will keep running even if there’s an issue or disruption with your cable connection.

Enhanced Performance Sentryum builds on previous Riello UPS transformerless series such as the Multi Sentry (MST), with an optimised card layout that reduces the number of components, cables, and interconnections.

This reduces the amount of installation space your UPS will need and makes it far easier and more cost-effective to maintain.

Power At Your Fingertips Take control with a 5-inch colour touchscreen display panel which clearly shows real-time information and allows you to easily adjust the operating mode.

Also features an innovative new LED status indicator which automatically changes colour depending on the current operating mode and UPS status. In-built wheels enable easy manoeuvrability.

Express View Logo
In Stock: 1-2 Days
£ POA
£ POA Inc Vat
Riello S3T 20 ACT S2 20kVA S3T Active UPS
Riello Logo
with 4 minutes runtime at full load



Overview Sentryum is Riello UPS’s third generation of transformerless ONLINE UPS. Delivering outstanding performance and up to 96.5% efficiency in a compact footprint, it’s a proven solution for smaller data centres and similar applications.

Now available in 10-15-20-30-40 kVA models, choose from 3 different cabinet sizes to maximise your battery autonomy and make the most of your valuable floor space.

Designed to handle capacitive loads like blade servers without any reduction in active power.



Highlights Choice of 3 cabinet sizes (Compact, Active, Xtend) to maximise battery runtime
96.5% operating efficiency (ONLINE mode) reduces energy waste
High overload and short circuit capacity guarantees availability
Parallel up to 8 UPS for extra capacity or redundancy
Large touchscreen display and LED status indicator
Fantastic Flexibility Sentryum offers you a choice of power ranges and cabinet sizes, making this versatile series suitable for several mission-critical environments. Select from 3 frames to suit your space and battery requirements:

Compact (CPT)

70 cm x 28 cm x 84 cm (H x W x D)
0.25m² footprint
1 internal battery string - space for 40 blocks
Available for 10-15-20 kVA versions only; not available for 30-40 kVA versions
Active (ACT)

102.5 cm x 38 cm x 85 cm (H x W x D)
0.35m² footprint
1-2 internal battery strings - space for 2x40 blocks
Available for all versions
Xtend (XTD)

132 cm x 44 cm x 84 cm (H x W x D)
0.25m² footprint
3 internal battery strings - space for 3x40 blocks
Optional isolation transformers
Available for all versions
Available as 1-phase/3-phase input, 1-phase output or 3-phase input and output.

Reliable And Efficient Our transformerless UPS delivers unity power (pf 1) and operating efficiency of up to 96.5%, which helps you minimise wasted energy. It features a unique control system that reduces harmonic voltage distortion (<1% at resistive load and < 1.5% at non-linear load).

The Sentryum can also handle high overloads (125% for 10 minutes or 150% for 1 minute) and short circuits (270% for 200ms or 150% for 300ms), meaning you won’t have to transfer to bypass to deal with sudden peak loads.

Scalable Power Easily increase your power or battery autonomy by installing up to 8 Sentryum UPS in parallel (3-phase version).

Parallel installations operate on a closed-loop system, so your UPS will keep running even if there’s an issue or disruption with your cable connection.

Enhanced Performance Sentryum builds on previous Riello UPS transformerless series such as the Multi Sentry (MST), with an optimised card layout that reduces the number of components, cables, and interconnections.

This reduces the amount of installation space your UPS will need and makes it far easier and more cost-effective to maintain.

Power At Your Fingertips Take control with a 5-inch colour touchscreen display panel which clearly shows real-time information and allows you to easily adjust the operating mode.

Also features an innovative new LED status indicator which automatically changes colour depending on the current operating mode and UPS status. In-built wheels enable easy manoeuvrability.

Express View Logo
In Stock: 1-2 Days
£ POA
£ POA Inc Vat
Riello S3T 20 ACT T4 20kVA S3T Active UPS
Riello Logo
with 11 minutes runtime at full load



Overview Sentryum is Riello UPS’s third generation of transformerless ONLINE UPS. Delivering outstanding performance and up to 96.5% efficiency in a compact footprint, it’s a proven solution for smaller data centres and similar applications.

Now available in 10-15-20-30-40 kVA models, choose from 3 different cabinet sizes to maximise your battery autonomy and make the most of your valuable floor space.

Designed to handle capacitive loads like blade servers without any reduction in active power.



Highlights Choice of 3 cabinet sizes (Compact, Active, Xtend) to maximise battery runtime
96.5% operating efficiency (ONLINE mode) reduces energy waste
High overload and short circuit capacity guarantees availability
Parallel up to 8 UPS for extra capacity or redundancy
Large touchscreen display and LED status indicator
Fantastic Flexibility Sentryum offers you a choice of power ranges and cabinet sizes, making this versatile series suitable for several mission-critical environments. Select from 3 frames to suit your space and battery requirements:

Compact (CPT)

70 cm x 28 cm x 84 cm (H x W x D)
0.25m² footprint
1 internal battery string - space for 40 blocks
Available for 10-15-20 kVA versions only; not available for 30-40 kVA versions
Active (ACT)

102.5 cm x 38 cm x 85 cm (H x W x D)
0.35m² footprint
1-2 internal battery strings - space for 2x40 blocks
Available for all versions
Xtend (XTD)

132 cm x 44 cm x 84 cm (H x W x D)
0.25m² footprint
3 internal battery strings - space for 3x40 blocks
Optional isolation transformers
Available for all versions
Available as 1-phase/3-phase input, 1-phase output or 3-phase input and output.

Reliable And Efficient Our transformerless UPS delivers unity power (pf 1) and operating efficiency of up to 96.5%, which helps you minimise wasted energy. It features a unique control system that reduces harmonic voltage distortion (<1% at resistive load and < 1.5% at non-linear load).

The Sentryum can also handle high overloads (125% for 10 minutes or 150% for 1 minute) and short circuits (270% for 200ms or 150% for 300ms), meaning you won’t have to transfer to bypass to deal with sudden peak loads.

Scalable Power Easily increase your power or battery autonomy by installing up to 8 Sentryum UPS in parallel (3-phase version).

Parallel installations operate on a closed-loop system, so your UPS will keep running even if there’s an issue or disruption with your cable connection.

Enhanced Performance Sentryum builds on previous Riello UPS transformerless series such as the Multi Sentry (MST), with an optimised card layout that reduces the number of components, cables, and interconnections.

This reduces the amount of installation space your UPS will need and makes it far easier and more cost-effective to maintain.

Power At Your Fingertips Take control with a 5-inch colour touchscreen display panel which clearly shows real-time information and allows you to easily adjust the operating mode.

Also features an innovative new LED status indicator which automatically changes colour depending on the current operating mode and UPS status. In-built wheels enable easy manoeuvrability.

Express View Logo
In Stock: 1-2 Days
£ POA
£ POA Inc Vat
Other Ranges Available
Riello Sentryum Compact 10-20kVA 1 or 3 Phase Input 1 Phase Output
Riello Sentryum Compact 10-20kVA 1 or 3 Phase Input 1 Phase Output
View Range
Riello Sentryum Compact 10-20kVA 3 Phase Input 3 Phase Output
Riello Sentryum Compact 10-20kVA 3 Phase Input 3 Phase Output
View Range
Riello Sentryum Active 10-20kVA 1 or 3 Phase Input 3 Phase Output
Riello Sentryum Active 10-20kVA 1 or 3 Phase Input 3 Phase Output
View Range
Riello Sentryum & Multi Sentry Battery Box Housings
Riello Sentryum & Multi Sentry Battery Box Housings
View Range
Join Our Mailing List
Social Links
  • Apply for Credit