Product Description

Siemens 5SU1344-7RC63 RCBO – 63A, 4-Pole, 30mA, Type A, C-Characteristic

The Siemens 5SU1344-7RC63 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 device. The exact Siemens datasheet specifies a 63 A rated current, 4-pole configuration, 7 modular-width units, C tripping characteristic, Type A residual-current protection and 30 mA residual-current sensitivity. It is rated for 415 V AC, 50 Hz and has a 10 kA short-circuit breaking capacity according to EN 61009-1.

Siemens 5SU1344-7RC63 RCBO

The 5SU1344-7RC63 belongs to the Siemens SENTRON / Betagard 5SU1 RCBO family. An RCBO combines overcurrent protection and residual-current protection in one integrated device.

It provides protection against:

• Overload

• Short circuit

• Residual or earth-leakage current

This integrated arrangement can simplify circuit-level protection compared with using separate MCB and RCCB devices.

The exact product description confirms 63 A, 4-pole, 7 modules, C characteristic, Type A and 30 mA.

63 A Rated Current

The RCBO has a rated current of 63 A.

This makes it suitable for compatible higher-current three-phase circuits and feeders designed around a 63 A protective device.

The final selection should consider cable capacity, connected load, installation method, ambient temperature, prospective fault current and applicable electrical regulations.

C Tripping Characteristic

The 5SU1344-7RC63 uses a C tripping characteristic.

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

Potential applications include:

• Motors

• Pumps

• Fans

• Control transformers

• Contactors

• Solenoids

• Industrial auxiliary equipment

• Selected machinery

The actual tripping characteristic should be selected according to the load's starting-current characteristics and protection coordination.

Type A Residual Current Protection

The device uses Type A residual-current protection.

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

Potential applications include:

• Electronic power supplies

• Automation equipment

• Rectifier-based equipment

• Industrial control systems

• Modern machinery

• Commercial electronic equipment

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

30 mA Residual Current Sensitivity

The 5SU1344-7RC63 has a rated residual operating current of 30 mA.

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

The 30 mA sensitivity should be selected according to the electrical protection design and applicable installation requirements. The exact Siemens data confirms 30 mA residual-current sensitivity.

4-Pole Configuration

The RCBO has 4 poles, making it suitable for compatible three-phase-plus-neutral electrical systems.

The four-pole arrangement allows the three phases and neutral to be incorporated into the protection arrangement.

Typical applications include:

• Three-phase distribution boards

• Industrial feeder circuits

• PCC panels

• MCC panels

• Commercial electrical panels

• Machine power circuits

• Factory electrical systems

• Sub-distribution boards

The exact product data specifies 4 poles / 4P, with all four poles protected.

415 V AC Application

The exact Siemens technical data specifies a 415 V AC supply voltage and 50 Hz operating frequency.

This makes the product suitable for compatible three-phase low-voltage distribution systems where the voltage and protection requirements match the device.

10 kA Short-Circuit Breaking Capacity

The 5SU1344-7RC63 has a 10 kA short-circuit breaking capacity according to EN 61009-1.

The technical data also specifies:

• 10 kA according to EN 60898

• 15 kA according to IEC 60947-2

• 10 kA rated residual switching capacity according to IEC 61009-1

• Energy limitation class 3

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

Combined Overcurrent and Residual-Current Protection

The principal advantage of the 5SU1344-7RC63 is its integrated protection architecture.

A conventional arrangement may use:

MCB + RCCB

An RCBO combines these functions:

RCBO = Overload + Short Circuit + Residual Current Protection

This can simplify circuit-level protection and reduce the number of separate protective devices.

7-Module Design

The exact Siemens product specifies 7 modular width units.

The technical datasheet gives a physical width of 126 mm, corresponding to the stated 7-module configuration.

The 7-module designation refers to physical panel space and does not represent a power rating.

Physical Dimensions

The Siemens technical data specifies approximately:

• Height: 90 mm

• Width: 126 mm

• Depth: 70 mm

• Installation depth: 70 mm

• Modular width: 7 units

• Mounting position: Any

These dimensions are useful for electrical panel builders when checking enclosure and DIN-rail space.

Neutral Conductor Switching

The technical data specifies neutral conductor switching.

This supports the four-pole protection arrangement used in compatible three-phase-plus-neutral systems.

Flexible Power-Supply Connection

Siemens specifies that the power-supply connection can be positioned either at the top or bottom.

This provides flexibility during electrical-panel wiring.

Overload Protection

The overcurrent section protects the connected circuit against sustained excessive current caused by overload.

The 63 A rating should be coordinated with:

• Cable ampacity

• Connected load

• Installation method

• Ambient temperature

• Protection-coordination requirements

Short-Circuit Protection

The RCBO also provides integrated short-circuit protection.

The specified 10 kA EN 61009-1 breaking capacity should be considered against the prospective fault current at the installation point.

Residual-Current Protection

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

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

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

C-Curve Industrial Applications

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

Potential applications include:

• Pumps

• Fans

• Motors

• Solenoids

• Contactors

• Control transformers

• Industrial machinery

• Automation equipment

The actual application should be evaluated according to load starting characteristics and protection coordination.

Type A Applications with Electronic Loads

Type A protection is suitable for compatible applications where residual currents can include pulsating DC components.

Potential applications include:

• Automation systems

• Electronic control panels

• Switching power supplies

• Rectifier-based equipment

• Industrial instrumentation

• Modern electrical machinery

The connected equipment's leakage-current waveform should be checked before final selection.

Three-Phase Distribution Applications

The 5SU1344-7RC63 can be considered for compatible:

• Industrial distribution boards

• Three-phase equipment feeders

• PCC panels

• MCC panels

• Machine power circuits

• Commercial switchboards

• Factory electrical systems

• Sub-distribution boards

• Building electrical panels

Protection Coordination

A typical arrangement can be:

Incoming Supply → RCBO → Protected Three-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

Maintenance and Testing

RCBOs should be included in an appropriate electrical inspection and testing program.

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

Regular testing helps confirm that the protective mechanism remains operational.

Installation Considerations

Before selecting the 5SU1344-7RC63, verify:

• Rated current: 63 A

• Residual-current sensitivity: 30 mA

• Residual-current type: Type A

• Tripping characteristic: C

• Pole configuration: 4-pole

• Rated voltage: 415 V AC

• Operating frequency: 50 Hz

• Short-circuit capacity: 10 kA

• Required panel space: 7 modules

• Cable size and installation method

• Load starting characteristics

• Applicable national regulations

Difference from D-Characteristic Version

The 5SU1344-8RC63 is the corresponding 63 A, 4-pole, 7-module, Type A, 30 mA RCBO with a D characteristic.

Therefore:

5SU1344-7RC63 → C characteristic

5SU1344-8RC63 → D characteristic

The main difference is the overcurrent tripping characteristic. The D curve is intended for compatible loads with higher starting or inrush currents.

Difference from Type AC Version

The 5SU1644-1RC63 is a Type AC, C-characteristic RCBO with a 300 mA residual-current rating.

The 5SU1344-7RC63 is specifically:

63 A + 4-pole + 7 modules + C characteristic + Type A + 30 mA

Therefore, both residual-current type and sensitivity must be checked before choosing an alternative.

Difference from 300 mA Type A Version

The 5SU1644-7RC63 is a 63 A, 4-pole, 7-module, C-characteristic, Type A, 300 mA RCBO.

Therefore:

5SU1344-7RC63 → Type A, 30 mA

5SU1644-7RC63 → Type A, 300 mA

The main difference is residual-current sensitivity.

Difference from 100 mA Type A Version

The 5SU1444-7RC63 is the corresponding 63 A, 4-pole, 7-module, C-characteristic, Type A, 100 mA configuration.

Therefore:

5SU1344-7RC63 → Type A, 30 mA

5SU1444-7RC63 → Type A, 100 mA

5SU1644-7RC63 → Type A, 300 mA

This comparison is useful when selecting the exact residual-current sensitivity.

Difference from 2-Pole RCBO

The 5SU1324 family includes 2-pole Type A RCBO variants, while the 5SU1344-7RC63 is a 4-pole device for compatible three-phase-plus-neutral applications.

The pole configuration should therefore be checked carefully before selecting a replacement.

Difference Between RCBO and RCCB

The 5SU1344-7RC63 is an RCBO.

An RCCB primarily provides residual-current protection and generally needs separate overcurrent protection.

An RCBO combines:

Residual-current protection + overload protection + short-circuit protection

in one device.

Suitable for Electrical Panel Builders and Industrial Buyers

The Siemens 5SU1344-7RC63 is relevant for:

• Electrical panel builders

• Industrial buyers

• Electrical contractors

• OEMs

• Machine builders

• Factory maintenance teams

• Commercial electrical contractors

• Electrical distributors

• Automation system integrators

• Electrical product dealers

For SB Smart, the product is positioned as a Siemens SENTRON / Betagard 5SU1 Type A RCBO for 63 A three-phase circuit protection with C characteristic and 30 mA sensitivity.

Technical Specification

These specifications are taken from the exact Siemens technical data for 5SU1344-7RC63.

Key Features

• Siemens SENTRON / Betagard 5SU1 RCBO

• Article number 5SU1344-7RC63

• 63 A rated current

• 4-pole configuration

• 7-module format

• Type A residual-current protection

• 30 mA residual-current sensitivity

• C tripping characteristic

• 415 V AC rated voltage

• 50 Hz operating frequency

• 10 kA EN 61009-1 breaking capacity

• 15 kA IEC 60947-2 switching capacity

• 10 kA rated residual switching capacity

• 440 V insulation voltage

• 4 kV surge-voltage resistance

• Neutral conductor switching

• Top or bottom power-supply connection

• Integrated overload and short-circuit protection

• Integrated residual-current protection

• Suitable for compatible three-phase-plus-neutral circuits

Benefits

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

• 63 A rating: Suitable for compatible higher-current three-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 inrush current.

• 4-pole design: Suitable for compatible three-phase-plus-neutral systems.

• 7-module format: Provides a modular four-pole protection solution.

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

• Neutral switching: Supports the four-pole circuit arrangement.

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

Why Choose Siemens 5SU1344-7RC63?

The Siemens 5SU1344-7RC63 combines 63 A overcurrent protection, C-curve tripping and Type A 30 mA residual-current protection in a 4-pole, 7-module RCBO.

The exact Siemens data confirms 415 V AC, 50 Hz, 63 A, 4-pole configuration, Type A, 30 mA sensitivity, C characteristic 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 63 A, 30 mA three-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 5SU1344-7RC63?

The 5SU1344-7RC63 is a Siemens SENTRON / Betagard 5SU1 RCBO rated at 63 A, with 4 poles, 7 modules, 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 63 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 4 poles, suitable for compatible three-phase-plus-neutral applications.

8. What is the module width?

The exact Siemens data specifies 7 modular width units and a physical width of 126 mm.

9. What is the rated voltage?

The exact Siemens technical data specifies 415 V AC at 50 Hz.

10. What is the short-circuit breaking capacity?

The specified breaking capacity is 10 kA according to EN 61009-1, with 15 kA according to IEC 60947-2 for the applicable switching-capacity parameter.

11. What is the difference between 5SU1344-7RC63 and 5SU1344-8RC63?

5SU1344-7RC63: 63 A, 4-pole, Type A, 30 mA, C characteristic.

5SU1344-8RC63: 63 A, 4-pole, Type A, 30 mA, D characteristic.

The main difference is the overcurrent tripping characteristic.

12. What is the difference between 5SU1344-7RC63 and 5SU1444-7RC63?

5SU1344-7RC63: Type A, 30 mA.

5SU1444-7RC63: Type A, 100 mA.

13. What is the difference between 5SU1344-7RC63 and 5SU1644-7RC63?

5SU1344-7RC63: Type A, 30 mA.

5SU1644-7RC63: Type A, 300 mA.

14. Where can I buy Siemens 5SU1344-7RC63 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.