The 3VA1132-5EF42-0AA0-ZD00: This is a Siemens 3VA1 IEC frame 160 molded case circuit breaker (MCCB) in the M breaking capacity class, rated Icu=55kA at 415V. Four-pole construction with a TM240 ATAM thermal-magnetic trip unit set at In=32A. Overload protection adjustable Ir=22A to 32A; short-circuit protection Ii = 5 to 10 times In. The N conductor is unprotected — typical for line-side protection where the neutral is not switched. Includes a nut keeper kit and is configured for DC Power OEM supply into China.
What the ratings mean for fit
The 55kA Icu at 415V puts this in the M (medium) breaking capacity class for the 3VA1 family. That means it can safely interrupt a fault current up to 55kA without self-destruction — enough for most industrial distribution boards with a transformer of 2000 kVA or less. The TM240 ATAM trip unit gives you a thermal adjustable overload band (22-32A) and a fixed magnetic short-circuit pickup (5-10x In). If your motor inrush or transformer magnetizing current exceeds 10x In, you'll nuisance trip; this breaker is better suited for feeder or distribution duty where the starting surge is moderate.