Product Description

Siemens 5SU1424-1RC40 RCBO – 40A, 2-Pole, 100mA, Type AC, C-Characteristic

The Siemens 5SU1424-1RC40 is a Betagard / SENTRON 5SU1 Residual Current Circuit Breaker with Overcurrent Protection (RCBO) designed to combine overload, short-circuit and residual-current protection in a single compact device. The exact article is specified as a 40 A, 2-pole, 4-module, C-characteristic, Type AC, 100 mA RCBO with a 10 kA breaking capacity. Indian product data identifies the device for the 240/415 V AC, 50 Hz Betagard 5SU1 family.

Siemens 5SU1424-1RC40 RCBO

The 5SU1424-1RC40 belongs to the Siemens Betagard / SENTRON 5SU1 range. Unlike a conventional RCCB, an RCBO combines multiple protective functions in one device:

• Overload protection

• Short-circuit protection

• Residual-current protection

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

The exact product listing confirms 40 A, 2-pole, 4-module, C characteristic, Type AC and 100 mA.

40 A Rated Current

The RCBO has a rated current of 40 A.

This makes it suitable for compatible single-phase circuits and feeders where the circuit protection design requires a 40 A protective device.

The actual selection should consider cable capacity, connected load, installation method, ambient conditions and applicable electrical requirements.

C Tripping Characteristic

The 5SU1424-1RC40 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 equipment feeders

The C characteristic should be matched to the actual load and protection-coordination requirements. The product listing specifically identifies the article as C curve.

Type AC Residual Current Protection

The RCBO uses Type AC residual-current protection.

Type AC protection is intended for compatible sinusoidal alternating residual currents.

The residual-current waveform of the connected equipment should be considered before selecting the RCBO. Equipment that can generate pulsating DC or other residual-current components may require another residual-current type.

The exact 5SU1424-1RC40 product is identified as Type AC.

100 mA Residual Current Sensitivity

The 5SU1424-1RC40 has a rated residual operating current of 100 mA.

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

The 100 mA sensitivity should be selected according to the complete electrical protection design. It should not automatically be replaced with a 30 mA or 300 mA device because the protection thresholds are different.

The exact product data confirms 100 mA sensitivity.

2-Pole Configuration

The device has 2 poles and is intended for compatible single-phase applications.

This configuration allows the phase and neutral to be incorporated into the switching and 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

240 V AC / 415 V AC Family

Siemens Betagard 5SU1 product information identifies the family for 240/415 V AC, 50 Hz applications. For this 2-pole product, the applicable single-phase voltage should be checked against the installation requirements.

Indian product data specifically lists the 5SU14241RC40 with 240/415 V rated insulation voltage and 50/60 Hz operation.

10 kA Short-Circuit Breaking Capacity

The 5SU1424-1RC40 is specified with a 10 kA breaking capacity.

The prospective short-circuit current at the installation point should still be checked during system design, together with upstream protection and coordination requirements.

Combined Overcurrent and Residual-Current Protection

The main advantage of the 5SU1424-1RC40 is its integrated protection arrangement.

A conventional circuit may use:

MCB + RCCB

An RCBO combines these functions:

RCBO = Overload + Short Circuit + Residual Current Protection

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

4-Module Design

The product is specified as a 4-module RCBO. The modular width refers to physical panel space and does not represent a 4 MW power rating.

Indian product data explicitly identifies Module Width (18 mm/module): 4.

This format is suitable for:

• DIN-rail distribution boards

• Commercial panels

• Sub-distribution boards

• Control panels

• Industrial electrical enclosures

DIN-Rail Installation

The Betagard 5SU1 family is intended for modular electrical installation.

The 5SU1424-1RC40 can be integrated into suitable electrical distribution assemblies alongside compatible protection and control devices.

Before installation, verify the required panel space, wiring arrangement and manufacturer's installation instructions.

Overload Protection

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

The 40 A rated current should be coordinated with:

• Cable ampacity

• Load current

• Installation method

• Ambient temperature

• Protection requirements

Short-Circuit Protection

The RCBO also provides integrated short-circuit protection.

The specified 10 kA breaking capacity should be evaluated against the prospective fault current at the installation point.

Residual-Current Protection

Residual current occurs when a portion of electrical current flows through an unintended path, such as an earth-leakage route.

The RCBO monitors the residual-current condition and disconnects the circuit when the specified 100 mA threshold is reached.

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

C-Curve Applications

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

Potential applications include:

• Pumps

• Fans

• Small motors

• Control transformers

• Solenoids

• Contactors

• Industrial auxiliary equipment

• Selected commercial equipment

The actual selection should be based on load starting characteristics and protection coordination.

Type AC Load Compatibility

The Type AC characteristic is intended for compatible sinusoidal AC residual currents.

For modern electronic equipment, the leakage-current waveform should be evaluated before selecting Type AC instead of Type A, Type F or Type B protection.

Single-Phase Applications

The 5SU1424-1RC40 can be considered for compatible:

• Commercial distribution boards

• Building electrical panels

• Equipment feeders

• Office circuits

• Industrial auxiliary circuits

• Control-panel supplies

• Single-phase equipment

• Dedicated electrical feeders

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

• 100 mA residual-current sensitivity

• Upstream protection

• Applicable electrical standards

Maintenance and Testing

RCBOs should be included in the electrical installation's regular inspection and testing program.

The test function should be operated according to Siemens' instructions and applicable maintenance requirements to verify residual-current protection.

Regular testing helps confirm that the protective mechanism remains operational.

Installation Considerations

Before selecting the 5SU1424-1RC40, verify:

• Rated current: 40 A

• Residual-current sensitivity: 100 mA

• Residual-current type: Type AC

• Tripping characteristic: C

• Pole configuration: 2-pole

• System voltage compatibility

• Short-circuit level

• Required panel space: 4 modules

• Cable size and installation method

• Load inrush characteristics

• Applicable electrical regulations

Difference from 300 mA Version

The 5SU1624-1RC40 belongs to the corresponding 40 A, 2-pole, 4-module, C-characteristic, Type AC, 300 mA configuration.

Therefore:

5SU1424-1RC40 → 40 A, 100 mA

5SU1624-1RC40 → 40 A, 300 mA

The primary difference is the residual-current operating threshold.

Difference from 30 mA Version

The 5SU1424-1RC40 is specifically a 100 mA RCBO.

A 30 mA version is a different protection configuration and should not be treated as an exact replacement without checking the circuit requirements.

Difference from Type A Version

A Type A variant is designed for suitable AC residual currents with pulsating DC components, while 5SU1424-1RC40 is specifically Type AC.

Therefore, the connected equipment should be evaluated before choosing between Type AC and Type A.

Difference from D Characteristic

A D-characteristic RCBO is intended for compatible circuits with higher starting/inrush current.

The 5SU1424-1RC40 uses C characteristic, so the D alternative should only be selected where the load and protection coordination require it.

Difference from 32 A Version

A lower-current variant should be selected when the protected circuit requires less than 40 A.

The 5SU1424-1RC40 is specifically the 40 A Type AC, 100 mA, C-characteristic configuration.

Difference from 63 A Version

The corresponding higher-current 63 A version is intended for circuits designed around a 63 A protective rating.

Therefore, the rated current must be matched to the cable and connected load.

Difference from 4-Pole Version

The 5SU1444 family contains four-pole RCBOs for compatible three-phase-plus-neutral systems.

The 5SU1424-1RC40 is a 2-pole RCBO intended for compatible single-phase applications.

Suitable for Electrical Panel Builders and Industrial Buyers

The Siemens 5SU1424-1RC40 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 AC RCBO for 40 A single-phase circuit protection with C characteristic and 100 mA sensitivity.

Technical Specification

The exact product data confirms 40 A, 2-pole, 4-module, C curve, Type AC, 100 mA and 10 kA. Indian specifications also identify the Betagard 5SU1 family for 240/415 V AC, 50 Hz and IS 12640.

Key Features

• Siemens SENTRON / Betagard 5SU1 RCBO

• Article number 5SU1424-1RC40

• 40 A rated current

• 2-pole configuration

• 4-module format

• Type AC residual-current protection

• 100 mA residual-current sensitivity

• C tripping characteristic

• 240/415 V AC family rating

• 50/60 Hz operation

• 10 kA breaking capacity

• Integrated overload protection

• Integrated short-circuit protection

• Integrated residual-current protection

• Suitable for compatible single-phase circuits

Benefits

• Combined protection: Integrates overload, short-circuit and residual-current protection.

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

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

• Type AC protection: Designed for compatible sinusoidal AC residual currents.

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

• 2-pole design: Suitable for compatible single-phase circuit protection.

• 4-module format: Fits modular electrical-panel arrangements.

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

• Siemens Betagard platform: Provides a standardized integrated circuit-protection solution.

Why Choose Siemens 5SU1424-1RC40?

The Siemens 5SU1424-1RC40 combines 40 A overcurrent protection, C-curve tripping and Type AC 100 mA residual-current protection in a compact 2-pole, 4-module RCBO.

The exact product data confirms the combination of 40 A, 2-pole, 4-module, C characteristic, Type AC, 100 mA and 10 kA breaking capacity.

For SB Smart, this product is best presented as a Siemens Betagard/SENTRON 5SU1 Type AC RCBO for 40 A, 100 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 5SU1424-1RC40?

The 5SU1424-1RC40 is a Siemens SENTRON / Betagard 5SU1 RCBO rated at 40 A, with 2 poles, 4 modules, C characteristic, Type AC residual-current protection and 100 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 100 mA.

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

It uses Type AC 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, suitable for compatible single-phase protection applications.

8. What does 4 modules mean?

The 4-module designation refers to the physical panel space occupied by the device. Indian product data specifies four 18 mm modules.

9. What is the voltage rating?

The Betagard 5SU1 family is specified for 240/415 V AC, with the applicable system voltage depending on the specific configuration.

10. What is the short-circuit breaking capacity?

The product is specified with a 10 kA breaking capacity.

11. What is the difference between 5SU1424-1RC40 and 5SU1624-1RC40?

5SU1424-1RC40: 40 A, 2-pole, Type AC, C characteristic, 100 mA.

5SU1624-1RC40: 40 A, 2-pole, Type AC, C characteristic, 300 mA.

The main difference is the residual-current sensitivity.

12. Where can I buy Siemens 5SU1424-1RC40 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.