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Siemens 5SM1312-6 Residual Current Circuit Breaker — 2-Pole, 25A, 30mA, Type A

Siemens 5SM1312-6 2-Pole Residual Current Circuit Breaker

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ManufacturerSiemens

Part number5SM1312-6

Type Residual Current Operated Circuit Breaker (RCCB)

Poles 2

Tripping Characteristic Type A

Rated Current (In) 25A

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Residual Current Protection 2-Pole Configuration Type A Sensitivity (AC & Pulsating DC) 30mA Sensitivity Protection Against Electric Shock DIN Rail Mountable

Product description

The Siemens 5SM1312-6 is a 2-pole residual current operated circuit breaker (RCCB) that offers enhanced safety by detecting both AC and pulsating DC residual currents. It features a Type A tripping characteristic, a rated current of 25A, a residual operating current of 30mA, and operates at 230V AC. This provides reliable protection against electric shock and fire hazards caused by earth faults.

This RCCB is ideal for use in residential, commercial, and light industrial applications where electronic equipment that might introduce pulsating DC fault currents is present. It offers a higher level of protection compared to Type AC RCCBs, making it suitable for modern installations.

Stanlo Automation, a veteran-owned surplus distributor, is your reliable source for Siemens industrial automation parts. We offer the 5SM1312-6 with commitment to quality and service, ensuring your critical systems remain operational.

Technical specifications

Type	Residual Current Operated Circuit Breaker (RCCB)
Poles	2
Tripping Characteristic	Type A
Rated Current (In)	25A
Residual Current (IΔn)	30mA
Rated Voltage (Un)	230V AC
Manufacturer	Siemens

Common applications

Residential Circuits

Commercial Installations

Areas with Electronic Devices

Machine Control

Protection Against Earth Faults

Fire Prevention

Compatible systems

Standard DIN rail mounting

Also known as

Siemens 5SM1312-6 RCD 2-Pole 25A 30mA Type A Breaker Siemens 230V Residual Current Device

Replaces / compatible with

Replaces older Siemens 2-pole RCCBs requiring Type A protection. Ensure compatibility with existing electrical installations and load requirements.

Technical note

Expert tip

While Type A provides enhanced protection, it does not protect against smooth DC residual currents. For such cases, a Type B RCCB would be necessary.

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Frequently asked questions

What is the advantage of a Type A RCCB like the Siemens 5SM1312-6 over a Type AC RCCB?

A Type A RCCB, such as the Siemens 5SM1312-6, offers superior protection by detecting not only sinusoidal AC leakage currents but also pulsating DC leakage currents. This is crucial for circuits containing electronic devices like dimmers, power supplies, and variable speed drives, which can generate pulsating DC components during fault conditions.