3VJ MCCB, Thermal Magnetic Trip Unit - 3VJ1225-3DB32-0AA0

Product Description

3VJ MCCB, Thermal Magnetic Trip Unit – 3VJ1225-3DB32-0AA0

The Siemens 3VJ1225-3DB32-0AA0 is a robust Molded Case Circuit Breaker (MCCB) from the 3VJ1 series, designed for reliable protection of low-voltage electrical distribution systems. It uses a thermal magnetic trip unit (FTFM/ATFM variant depending on configuration) to provide dependable protection against overload and short-circuit faults, ensuring safe operation of cables, switchboards, and connected equipment.

This MCCB is widely used in industrial switchboards, commercial distribution panels, OEM machinery, and infrastructure power systems, where compact design, stable performance, and high fault interruption capacity are required.

According to Siemens technical data, the 3VJ12 frame (250 A class) offers a breaking capacity of 25 kA at 415 V AC, with adjustable thermal overload settings and fixed magnetic short-circuit protection, making it suitable for medium-duty industrial applications.

🔹 Key Features

• Siemens 3VJ1 series MCCB
• Part Number: 3VJ1225-3DB32-0AA0
• Thermal Magnetic Trip Unit (FTFM / ATFM variant)
• Rated current: 250 A
• 3-pole configuration
• Breaking capacity: 25 kA @ 415 V AC
• Adjustable overload protection (Ir setting)
• Fixed short-circuit magnetic protection (Ii setting)
• Compact molded case design for space-saving installation
• Screw-type terminals for secure wiring
• High electrical and mechanical endurance
• Suitable for LT switchboards and distribution systems
• Complies with IEC 60947-2 standards