SENTRON 3VM, Thermal Magnetic Trip Unit - 3VM1112-5GE42-0AA0

Product Description

Siemens SENTRON 3VM1112-5GE42-0AA0 – Thermal Magnetic Trip Unit MCCB

The Siemens 3VM1112-5GE42-0AA0 is a SENTRON 3VM molded case circuit breaker (MCCB) designed for reliable protection of low-voltage electrical distribution systems against overload and short-circuit faults. It is widely used in industrial switchboards, MCC panels, and power distribution networks where dependable feeder protection and stable performance are required.

This model belongs to the 3VM1 IEC Frame 160 series and is equipped with a TM220 thermal magnetic trip unit (ATFM – Adjustable Thermal, Fixed Magnetic). It provides adjustable overload protection and fixed instantaneous short-circuit protection, ensuring both flexibility and safety in industrial applications.

With a rated current of 125 A and a high breaking capacity of up to 55 kA at 415 V AC (variant dependent), it is suitable for demanding industrial feeder and distribution applications. 

Key Features:

• Siemens SENTRON 3VM MCCB 

• TM220 thermal magnetic trip unit (ATFM) 

• 4-pole configuration 

• Rated current: 125 A 

• Adjustable overload protection (Ir: approx. 88–125 A) 

• Fixed instantaneous short-circuit protection (Ii: 10 × In) 

• High breaking capacity for industrial distribution use 

• IEC Frame 160 compact design 

• Front terminal connection system 

• Suitable for MCC, PCC, and feeder applications 

• Reliable industrial-grade construction 

• IEC 60947-2 compliant