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Siemens 5SM3345-6 4-Pole Type A High Current RCCB

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ManufacturerSiemens

Part number5SM3345-6

Poles 4

Type A

In 125 A

Un AC 400 V

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4-pole configuration Type A residual current protection 125A high rated current 30mA sensitivity 400V AC operational voltage DIN rail mountable

Product description

The Siemens 5SM3345-6 is a high-current 4-pole Residual Current Operated Circuit Breaker (RCCB) from the SENTRON series, featuring Type A protection. It is designed for demanding applications with a high rated current (In) of 125 A, a sensitivity of 30 mA, and a rated operational voltage (Un AC) of 400 V. This RCCB provides essential protection against electric shock and fire hazards.

This high-capacity RCCB is suitable for industrial facilities, large commercial buildings, and other applications requiring significant current handling while maintaining safety from earth leakage faults. Its 4-pole design ensures complete isolation for all phases and the neutral conductor.

Source your Siemens 5SM3345-6 from Stanlo Automation, a veteran-owned distributor dedicated to providing quality surplus industrial parts. We ensure prompt delivery and reliable components to support your operations.

Technical specifications

Poles	4
Type	A
In	125 A
Un AC	400 V
Residual Current	30 mA
Series	5SM3
Mounting	DIN Rail

Common applications

Industrial Power Distribution

Large Commercial Buildings

High-Capacity Circuits

Machine Protection

Data Centers

Compatible systems

Industrial and commercial high-capacity electrical systems operating at 400V AC

Also known as

Siemens 5SM3345-6 125A RCCB Siemens 4-pole high current RCD

Replaces / compatible with

The Siemens 5SM3345-6 is designed for high-current applications within the SENTRON 5SM3 series, providing essential residual current protection.

Technical note

Expert tip

For applications with very high potential fault currents, ensure proper upstream short-circuit protection is coordinated with this 125A RCCB.

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Frequently asked questions

What makes the Siemens 5SM3345-6 suitable for high current applications?

The Siemens 5SM3345-6 features a high rated current of 125 A, making it capable of safely protecting circuits with significant power demands while still providing sensitive 30mA residual current detection.