Siemens 3VA1332-4EF32-0AA0 Circuit Breaker

Feature & Principle

It is a thermal magnetic molded case circuit breaker of Siemens SENTRON 3VA1 series. It adopts TM240 thermomagnetic trip, the bimetallic strip realizes adjustable overload protection, and the electromagnetic coil provides instantaneous short-circuit protection. When the circuit is overloaded, the bimetallic strip heats and deforms to trigger tripping; under short-circuit fault, the electromagnetic action quickly cuts off the power supply to protect cables, transformers and downstream loads. It supports front panel manual operation, compact frame 400 structure, easy installation in low-voltage distribution cabinets.

Specifications

Model: 3VA1332-4EF32-0AA0 Brand: Siemens Series: SENTRON 3VA1 Frame size: 400 Poles: 3P Rated current In: 320A Overload setting Ir: 224~320A Short-circuit setting Ii: 5~10×In Breaking capacity Icu: 36kA @415V Trip unit: TM240 thermal-magnetic Connection: Screw flat terminal Front protection: IP40 Certification: IEC60947-2, CE, UL

Components & Diagnostics

Bimetallic thermal element, electromagnetic trip coil, operating mechanism, arc extinguishing chamber, insulated plastic housing, wiring terminal assembly. Common faults: abnormal heating, false tripping, failure to trip under short circuit, switch jamming.

Product Brief

Siemens 3VA1332-4EF32-0AA0 molded case circuit breaker, electrical distribution spare widely used for factory, pump and fan low voltage power distribution system overhaul and replacement.