Product Description

Siemens 5SU1354-7RC40 RCBO – 40A, 2-Pole, 30mA, Type A, C-Characteristic

The Siemens 5SU1354-7RC40 is a SENTRON / Betagard 5SU1 Residual Current Circuit Breaker with Overcurrent Protection (RCBO) designed to combine overload, short-circuit and residual-current protection in one compact device. The exact Siemens datasheet specifies a 40 A rated current, 2-pole / 1P+N configuration, C tripping characteristic, Type A residual-current protection and 30 mA residual-current sensitivity. It is rated for 240 V AC, 50 Hz, with a 10 kA short-circuit breaking capacity according to EN 61009-1.

Siemens 5SU1354-7RC40 RCBO

The 5SU1354-7RC40 belongs to the Siemens SENTRON / Betagard 5SU1 RCBO family. Unlike a conventional RCCB, an RCBO combines several protective functions in one device:

• Overload protection

• Short-circuit protection

• Residual-current protection

This integrated arrangement can simplify circuit-level protection and reduce the need for separate MCB and RCCB devices.

The exact product description is RCBO 40 A, 2-pole, 2-module, C characteristic, Type A, 30 mA. Siemens' technical data confirms the same configuration.

40 A Rated Current

The RCBO has a rated current of 40 A.

This makes it suitable for compatible single-phase circuits and feeders designed around a 40 A protective device.

The final selection should consider:

• Connected load

• Cable ampacity

• Installation method

• Ambient conditions

• Prospective short-circuit current

• Protection coordination requirements

Siemens' technical data confirms the 40 A rated current.

C Tripping Characteristic

The 5SU1354-7RC40 uses a C tripping characteristic.

The C curve is intended for compatible circuits where normal operation may involve moderate starting or inrush current.

Potential applications include:

• Pumps

• Fans

• Small motors

• Control transformers

• Contactors

• Solenoids

• Industrial auxiliary equipment

• Selected electrical equipment

The actual C-curve selection should be based on load characteristics and protection coordination. Siemens specifies the article as C characteristic.

Type A Residual Current Protection

The RCBO uses Type A residual-current protection.

Type A devices are designed to detect compatible AC residual currents as well as pulsating DC residual-current components. This makes Type A protection suitable for many modern electrical and electronic loads.

Potential applications include:

• Electronic power supplies

• Rectifier circuits

• Automation equipment

• Industrial control equipment

• Modern electrical machinery

• Electronic equipment

The exact Siemens datasheet identifies the residual-current type as Type A.

30 mA Residual Current Sensitivity

The 5SU1354-7RC40 has a rated residual operating current of 30 mA.

When the residual-current condition reaches the specified operating threshold, the RCBO disconnects the protected circuit.

The 30 mA sensitivity should be selected according to the complete electrical protection design and applicable installation requirements.

Siemens specifies 30 mA as the rated tripping fault current.

2-Pole / 1P+N Configuration

The device has 2 poles, with a 1P+N configuration.

This makes it suitable for compatible single-phase circuits where phase and neutral are incorporated into the protection arrangement.

Typical applications include:

• Single-phase distribution boards

• Commercial electrical panels

• Building electrical systems

• Equipment feeders

• Office circuits

• Industrial auxiliary supplies

• Control-panel circuits

Siemens specifies 2 poles and 1P+N configuration for the article.

240 V AC Application

The exact Siemens technical data specifies a 240 V AC supply voltage and 50 Hz operating frequency.

This makes the device suitable for compatible single-phase AC electrical systems within its specified ratings.

10 kA Short-Circuit Breaking Capacity

The 5SU1354-7RC40 has a 10 kA short-circuit current breaking capacity according to EN 61009-1.

The technical data additionally specifies 10 kA according to EN 60898, 15 kA according to IEC 60947-2, and 10 kA rated residual switching capacity according to IEC 61009-1.

The prospective short-circuit current at the installation point should still be checked during system design.

Combined Overcurrent and Residual-Current Protection

The main advantage of the 5SU1354-7RC40 is the integrated protection arrangement.

A conventional circuit may use:

MCB + RCCB

An RCBO combines these protective functions:

RCBO = Overload + Short Circuit + Residual Current Protection

This can simplify circuit-level protection and reduce panel component count.

2-Module Compact Design

The product is a 2-module RCBO.

Siemens specifies 2 modular width units, with a physical width of approximately 36 mm.

This compact design helps optimize space in:

• DIN-rail distribution boards

• Commercial panels

• Control panels

• Sub-distribution boards

• Industrial electrical enclosures

The 2-module designation refers to physical panel width and does not indicate a power rating.

DIN-Rail / Modular Installation

The 5SU1 RCBO family is designed for modular electrical-panel installation.

The 5SU1354-7RC40 can be integrated into suitable distribution boards and electrical panels alongside compatible protection and control devices.

Siemens specifies the mounting position as any, subject to the applicable installation instructions.

Overload Protection

The overcurrent section of the RCBO protects the connected circuit against sustained excessive current resulting from overload.

The 40 A rating should be coordinated with:

• Cable capacity

• Load current

• Installation method

• Ambient temperature

• Protection requirements

This helps protect the circuit while minimizing nuisance tripping.

Short-Circuit Protection

The RCBO also provides integrated short-circuit protection.

With a specified 10 kA EN 61009-1 breaking capacity, the device is suitable for compatible installation conditions where the prospective fault current is within the specified limit.

Residual-Current Protection

Residual current occurs when part of the electrical current flows through an unintended path, such as leakage to earth.

The RCBO monitors the residual-current condition and disconnects the protected circuit when the specified 30 mA threshold is reached.

This adds residual-current protection to the integrated overload and short-circuit functions.

Type A Applications

The Type A characteristic makes the 5SU1354-7RC40 suitable for compatible circuits where residual currents may include pulsating DC components.

Potential applications include:

• Electronic equipment

• Automation panels

• Rectifier-based equipment

• Control systems

• Industrial machinery

• Modern commercial electrical equipment

The actual residual-current waveform should be considered before selecting the protection device.

C-Curve Applications

The C characteristic can be suitable for compatible loads with moderate starting or inrush current.

Potential applications include:

• Pumps

• Fans

• Small motors

• Solenoids

• Control transformers

• Contactors

• Industrial auxiliary equipment

The exact application should be evaluated according to the load's starting characteristics.

Single-Phase Applications

The 5SU1354-7RC40 can be considered for compatible:

• Commercial distribution boards

• Building electrical panels

• Equipment feeders

• Office circuits

• Control circuits

• Industrial auxiliary circuits

• Single-phase equipment supplies

The final application should follow the electrical design and applicable standards.

Protection Coordination

A typical arrangement can be:

Incoming Supply → RCBO → Protected Single-Phase Load

The complete protection design should consider:

• Prospective short-circuit current

• Cable capacity

• Load current

• C-curve characteristics

• 30 mA residual-current sensitivity

• Upstream protection

• Applicable electrical standards

Touch Protection and Neutral Switching

The technical data specifies touch protection and neutral conductor switching for the device.

These features support the product's use in suitable modular distribution and circuit-protection applications.

Flexible Power-Supply Connection

Siemens specifies that the position of the power-supply connection can be either top or bottom.

This provides flexibility when arranging panel wiring and installation.

IP20 Protection

The device is specified as IP20 when installed in a suitable distribution board with connected conductors.

The RCBO should therefore be installed within an appropriate electrical enclosure or distribution assembly.

Technical Environmental Conditions

Siemens specifies an operating ambient temperature range of -25 °C to +55 °C for the product. Storage temperature is specified from -40 °C to +75 °C, subject to the manufacturer's conditions.

These ratings should be considered when installing the RCBO in electrical enclosures exposed to varying ambient conditions.

Difference from Type AC Version

The 5SU1654-1RC40 is a Type AC RCBO with a different residual-current configuration, while the 5SU1354-7RC40 is specifically:

5SU1354-7RC40 → Type A, 40 A, 30 mA, C characteristic

The principal difference is the residual-current type and applicable protection characteristics.

Difference from 300 mA Version

The 5SU1 family also includes higher residual-current sensitivity variants.

The 5SU1354-7RC40 is specifically the 30 mA version.

A 300 mA RCBO should not be used as a direct replacement without confirming the required protection threshold.

Difference from 32 A Version

The Siemens Type A C-characteristic range includes lower-current variants such as 32 A.

Therefore:

5SU1354-7RC32 → 32 A

5SU1354-7RC40 → 40 A

The primary difference is the rated current. Siemens' Type A C-characteristic range includes both 32 A and 40 A variants.

Difference from 25 A Version

A 25 A variant is also available in the same Type A C-characteristic, 30 mA family.

Therefore:

5SU1354-7RC25 → 25 A

5SU1354-7RC40 → 40 A

The correct rated current should be selected according to the protected circuit.

Difference from 16 A Version

The same family includes a 16 A Type A, C-characteristic, 30 mA variant.

Therefore:

5SU1354-7RC16 → 16 A

5SU1354-7RC40 → 40 A

The main difference is rated current.

Difference from 4-Pole Version

The 5SU1444 family includes four-pole Type AC RCBOs, while 5SU1354-7RC40 is a 2-pole / 1P+N Type A device.

Therefore:

5SU1354-7RC40 → 2-pole / 1P+N, single-phase

5SU1444 variants → 4-pole, suitable three-phase-plus-neutral applications

The pole configuration must be matched to the electrical system.

Suitable for Electrical Panel Builders and Industrial Buyers

The Siemens 5SU1354-7RC40 is relevant for:

• Electrical panel builders

• Industrial buyers

• Electrical contractors

• OEMs

• Machine builders

• Facility-maintenance teams

• Commercial electrical contractors

• Electrical distributors

• Automation system integrators

• Electrical product dealers

For SB Smart, the product is positioned as a Siemens Betagard/SENTRON 5SU1 Type A RCBO for 40 A, 30 mA single-phase circuit protection with C characteristic.

These specifications are taken from Siemens' technical datasheet for 5SU1354-7RC40.

Key Features

• Siemens SENTRON / Betagard 5SU1 RCBO

• Article number 5SU1354-7RC40

• 40 A rated current

• 2-pole / 1P+N configuration

• 2-module compact format

• Type A residual-current protection

• 30 mA residual-current sensitivity

• C tripping characteristic

• 240 V AC rated supply voltage

• 50 Hz operating frequency

• 10 kA EN 61009-1 breaking capacity

• 15 kA IEC 60947-2 switching capacity

• 10 kA residual switching capacity

• Integrated overload protection

• Integrated short-circuit protection

• Integrated residual-current protection

• Neutral conductor switching

• Top or bottom power-supply connection

• Touch protection

• Suitable for compatible single-phase circuits

Benefits

• Combined protection: Provides overload, short-circuit and residual-current protection in one device.

• 40 A rating: Suitable for compatible higher-current single-phase circuits.

• Type A protection: Suitable where residual currents may include pulsating DC components.

• 30 mA sensitivity: Provides residual-current protection at the specified operating threshold.

• C characteristic: Suitable for compatible loads with moderate starting or inrush current.

• 2-module design: Helps optimize space in modular distribution boards.

• 10 kA breaking capacity: Provides substantial short-circuit interruption capability within specified conditions.

• Neutral switching: Supports the 1P+N circuit arrangement.

• Flexible supply connection: Power can be connected from the top or bottom.

Why Choose Siemens 5SU1354-7RC40?

The Siemens 5SU1354-7RC40 combines 40 A overcurrent protection, C-curve tripping and Type A 30 mA residual-current protection in a compact 2-pole, 2-module RCBO.

The exact Siemens technical data confirms 1P+N configuration, 40 A rated current, 30 mA residual-current sensitivity, Type A protection, C characteristic, 240 V AC operation and 10 kA EN 61009-1 short-circuit breaking capacity.

For SB Smart, this product is best presented as a Siemens Betagard/SENTRON 5SU1 Type A RCBO for 40 A, 30 mA single-phase circuit protection with C characteristic across India.

Delivery Across India

SB Smart supplies Siemens SENTRON/Betagard RCBOs, RCCBs and industrial electrical protection products across Faridabad, Gurgaon/Gurugram, Delhi NCR, Haryana, Noida, Punjab, Mumbai and other major Indian cities.

Major delivery locations include:

• Faridabad

• Delhi

• Gurgaon/Gurugram

• Delhi NCR

• Noida

• Greater Noida

• Haryana

• Punjab

• Mumbai

• Pune

• Ahmedabad

• Bengaluru

• Hyderabad

• Chennai

• Kolkata

• Jaipur

• Chandigarh

• Lucknow

• Indore

• Surat

• Vadodara

• Nagpur

• Coimbatore

• And other major cities across India

Frequently Asked Questions

1. What is Siemens 5SU1354-7RC40?

The 5SU1354-7RC40 is a Siemens SENTRON / Betagard 5SU1 RCBO rated at 40 A, with 2 poles / 1P+N, 2-module width, C characteristic, Type A residual-current protection and 30 mA sensitivity.

2. Is this an RCBO or RCCB?

It is an RCBO, meaning it combines residual-current and overcurrent protection.

3. What is the rated current?

The rated current is 40 A.

4. What is the residual-current sensitivity?

The rated residual operating current is 30 mA.

5. What type of residual-current protection does it use?

It uses Type A residual-current protection.

6. What is the tripping characteristic?

It has a C tripping characteristic.

7. How many poles does it have?

It has 2 poles in a 1P+N configuration.

8. What is the module width?

It is a 2-module device with a physical width of approximately 36 mm.

9. What is the rated voltage?

The Siemens technical datasheet specifies 240 V AC rated supply voltage.

10. What is the short-circuit breaking capacity?

The specified short-circuit breaking capacity is 10 kA according to EN 61009-1. The datasheet also lists 15 kA according to IEC 60947-2.

11. What is the difference between 5SU1354-7RC40 and 5SU1654-7RC40?

5SU1354-7RC40: 40 A, Type A, 30 mA, C characteristic.

5SU1654-7RC40: 40 A, Type A, 300 mA, C characteristic.

The main difference is the residual-current sensitivity. The Siemens product range lists both 40 A variants with their respective residual-current ratings.

12. Where can I buy Siemens 5SU1354-7RC40 in India?

SB Smart supplies Siemens SENTRON/Betagard 5SU1 RCBOs and industrial electrical protection products in India for panel builders, electrical contractors, OEMs, industrial buyers, machine builders and maintenance requirements.