SENTRON 3VA MCCB, Thermal Magnetic Trip Unit - 3VA1108-5MG32-0AA0

Product Description

Siemens SENTRON 3VA MCCB – Thermal Magnetic Trip Unit – 3VA1108-5MG32-0AA0

The Siemens 3VA1108-5MG32-0AA0 is a SENTRON 3VA1 series molded case circuit breaker (MCCB) designed for protection of low-voltage electrical systems against overload and short-circuit faults. It is commonly used in industrial switchboards, motor control panels, and feeder distribution systems where high breaking capacity and compact motor protection are required.

This model belongs to the 3VA1 Frame 160 series and is designed as a starter protection MCCB with a thermal magnetic trip unit (TM110M / FTFM variant depending on configuration). It provides short-circuit protection (and in this variant, motor/starter-focused protection behavior) rather than conventional adjustable overload settings.

With a rated current of 8 A and a very high breaking capacity of 55 kA at 415 V AC, it is suitable for motor feeder circuits and high fault-level industrial networks, ensuring reliable interruption under severe short-circuit conditions. 

Key Features:

• Siemens SENTRON 3VA MCCB (Frame 160 series) 

• Thermal Magnetic protection (starter/motor protection variant) 

• 3-pole configuration 

• Rated current: 8 A 

• High breaking capacity: 55 kA at 415 V AC 

• Suitable for motor starter and short-circuit protection applications 

• Compact industrial MCCB design 

• IEC 60947-2 compliant