SENTRON 3VA MCCB, Thermal Magnetic Trip Unit - 3VA1220-4GE42-0AA0

Product Description

Siemens SENTRON 3VA MCCB, Thermal Magnetic Trip Unit – 3VA1220-4GE42-0AA0

The Siemens 3VA1220-4GE42-0AA0 is a SENTRON 3VA1 series Molded Case Circuit Breaker (MCCB) designed for reliable protection of low-voltage electrical distribution systems against overload and short-circuit faults. This 3-pole MCCB belongs to the 3VA12 frame size (up to 250A class) and is widely used in industrial feeder, MCC, and power distribution applications where high breaking capacity and stable performance are required.

It uses a Thermal Magnetic Trip Unit (TM / ATFM type) to ensure both long-time overload protection and instantaneous short-circuit protection.

Key Features:

• Siemens SENTRON 3VA1 series MCCB 

• Part Number: 3VA1220-4GE42-0AA0 

• 3-pole molded case circuit breaker 

• Thermal Magnetic Trip Unit (TM / ATFM type) 

• Rated current: 200A 

• Frame size: 3VA12 (IEC frame 250 class) 

• Overload protection: adjustable (approx. 140–200A range) 

• Short-circuit protection: fixed magnetic (≈10 × In) 

• Breaking capacity: 36kA at 415V AC 

• Rated operational voltage up to 690V AC 

• Compact industrial-grade design 

• Screw terminal / nut keeper connection system 

• High mechanical and electrical endurance 

• Complies with IEC 60947-2 standards