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Siemens 5SM3312-0LB 2-Pole AC Type Residual Current Circuit Breaker

Siemens 5SM3312-0LB 2-Pole Type AC RCCB

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ManufacturerSiemens

Part number5SM3312-0LB

Poles 2

Type AC

In 25 A

Un AC 230 V

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2-pole configuration Type AC residual current protection 25A rated current 30mA sensitivity 230V AC operational voltage DIN rail mountable

Product description

The Siemens 5SM3312-0LB is a 2-pole Residual Current Operated Circuit Breaker (RCCB) designed for AC type fault current detection. It features a rated current (In) of 25 A, a sensitivity of 30 mA, and a rated operational voltage (Un AC) of 230 V. This breaker is part of the Siemens SENTRON series and provides fundamental protection against electric shock due to earth faults.

This Type AC RCCB is suitable for circuits where only AC residual currents are expected. It is commonly used in distribution boards for protecting lighting circuits, socket outlets, and general power circuits in residential and commercial settings.

Source your Siemens 5SM3312-0LB from Stanlo Automation. As a veteran-owned distributor, we are committed to providing quality surplus parts and reliable service for your industrial automation needs.

Technical specifications

Poles	2
Type	AC
In	25 A
Un AC	230 V
Residual Current	30 mA
Series	5SM3
Mounting	DIN Rail

Common applications

Residential Electrical Panels

Commercial Lighting Circuits

Socket Outlet Protection

General Power Distribution

Compatible systems

Standard AC circuits where Type AC protection is sufficient

Also known as

Siemens 5SM3312-0LB Type AC RCCB Siemens 2-pole AC breaker

Replaces / compatible with

The Siemens 5SM3312-0LB is a successor to older models and is available as a replacement for certain applications requiring Type AC protection.

Technical note

Expert tip

This Type AC RCCB is recommended for use only where smooth DC residual currents are not expected to occur.

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Frequently asked questions

What type of residual currents does the Siemens 5SM3312-0LB detect?

The Siemens 5SM3312-0LB is a Type AC RCCB, meaning it is designed to detect sinusoidal AC residual currents. It is not suitable for detecting pulsating DC or smooth DC residual currents.