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Siemens 5SM3344-6 4-Pole Type A Residual Current Circuit Breaker

Siemens 5SM3344-6 4-Pole Type A RCCB

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ManufacturerSiemens

Part number5SM3344-6

Poles 4

Type A

In 40 A

Un AC 400 V

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4-pole configuration Type A residual current protection 40A rated current 30mA sensitivity 400V AC operational voltage DIN rail mountable

Product description

The Siemens 5SM3344-6 is a 4-pole Residual Current Operated Circuit Breaker (RCCB) from the SENTRON series, offering Type A protection. It features a rated current (In) of 40 A, a residual current sensitivity of 30 mA, and a rated operational voltage (Un AC) of 400 V. This device is designed to provide robust protection against electric shock and fire hazards due to earth faults.

This 4-pole RCCB is well-suited for industrial applications, distribution boards, and control panels where higher current ratings and 400V AC systems are present. Its Type A classification ensures detection of AC, pulsating DC, and sinusoidal DC residual currents.

Stanlo Automation, your veteran-owned source for surplus industrial automation parts, offers the Siemens 5SM3344-6. We provide reliable components to keep your operations running efficiently.

Technical specifications

Poles	4
Type	A
In	40 A
Un AC	400 V
Residual Current	30 mA
Series	5SM3
Mounting	DIN Rail

Common applications

Industrial Distribution Boards

Control Panels

Machine Safety

Power Distribution Systems

400V Systems

Compatible systems

Industrial electrical systems operating at 400V AC

Also known as

Siemens 5SM3344-6 40A RCCB Siemens 4-pole Type A RCD

Replaces / compatible with

The Siemens 5SM3344-6 is part of the SENTRON 5SM3 series, designed as a reliable residual current protection device for industrial applications.

Technical note

Expert tip

This RCCB is a "phasing out" item, meaning it is being replaced by newer models, but remains a critical component for existing installations.

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Frequently asked questions

What is the significance of the 'Type A' classification for the Siemens 5SM3344-6 RCCB?

The 'Type A' classification indicates that the Siemens 5SM3344-6 RCCB can detect sinusoidal AC residual currents, pulsating DC residual currents, and also smooth DC residual currents. This provides a broader range of protection compared to Type AC devices.