SENTRON 3VM, Thermal Magnetic Trip Unit - 3VM1220-5GD42-0AA0

Product Description

Siemens SENTRON 3VM MCCB with Thermal Magnetic Trip Unit – 3VM1220-5GD42-0AA0

The Siemens 3VM1220-5GD42-0AA0 is a high-performance Molded Case Circuit Breaker (MCCB) from the SENTRON 3VM1 series, designed for reliable protection of low-voltage electrical distribution systems against overload and short-circuit faults. This 4-pole MCCB is equipped with a Thermal Magnetic Trip Unit (TM210 / FTFM type), providing fixed protection settings for stable and maintenance-free operation in industrial and commercial power systems.

It is widely used in LT panels, MCC/PCC systems, feeder circuits, and main distribution boards, where high breaking capacity and dependable performance are required.

Key Features:

• Siemens SENTRON 3VM1 series MCCB 

• Part Number: 3VM1220-5GD42-0AA0 

• 4-pole molded case circuit breaker 

• Thermal Magnetic Trip Unit (TM210 / FTFM) 

• Rated current: 200A 

• Fixed overload protection (Ir = 200A) 

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

• High breaking capacity: 55kA at 415V AC 

• IEC Frame Size 250 design 

• Robust industrial-grade construction 

• Suitable for selective coordination in distribution systems 

• Reliable fault interruption for overload and short-circuit conditions 

• Front / lug connection system (variant dependent) 

• High mechanical and electrical endurance 

• Designed as per IEC 60947-2 standards 

• Maintenance-free operation