SENTRON 3VM, Thermal Magnetic Trip Unit - 3VM1112-5MH32-0AA0

Product Description

Siemens SENTRON 3VM1112-5MH32-0AA0 – Thermal Magnetic Trip Unit MCCB

The Siemens 3VM1112-5MH32-0AA0 is a SENTRON 3VM molded case circuit breaker (MCCB) designed for reliable protection of low-voltage power distribution systems against overload and short-circuit faults. It is widely used in industrial switchboards, MCC panels, and feeder distribution systems where stable and safe circuit interruption is 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 along with fixed instantaneous short-circuit protection, ensuring both flexibility and dependable fault clearing performance.

With a rated current of 125 A, it is suitable for industrial feeder circuits, motor control panels, HVAC systems, and general power distribution networks where reliable protection is essential.

Key Features:

• Siemens SENTRON 3VM MCCB 

• TM220 thermal magnetic trip unit (ATFM) 

• Adjustable thermal overload protection 

• Fixed magnetic short-circuit protection 

• 3-pole / 4-pole variant (depending on configuration) 

• Rated current: 125 A 

• Compact IEC Frame 160 design 

• High breaking capacity for industrial applications 

• Front terminal connection system 

• Reliable protection for feeder and distribution circuits 

• Maintenance-free operation 

• IEC 60947-2 compliant design