The Siemens 3VA1132-5ED32-0AA0-ZD00 is a 3-pole IEC frame 160 molded case circuit breaker with a 55 kA interrupting capacity at 415 V (breaking capacity class M). It's configured for line protection with a TM210 thermal-magnetic trip unit — fixed overload protection at Ir = 32 A and fixed short-circuit protection set to Ii = 10 × In. The unit includes a nut keeper kit and is designated for DC Power OEM production in China.
What the ratings mean for fit
The 55 kA Icu at 415 V is the maximum short-circuit current the breaker can safely interrupt under IEC 60947-2. For a 32 A feeder in a 415 V three-phase panel, this gives substantial fault-current headroom — useful where the available fault current at the panelboard exceeds 25 kA. The fixed Ir = 32 A means the overload pickup is not adjustable; the breaker is sized for a 32 A continuous load and cannot be turned down to protect a smaller conductor. The fixed Ii = 10 × In (320 A) is the magnetic instantaneous trip threshold — it clears bolted faults fast but may not coordinate with downstream branch breakers on moderate overcurrents.
Panel integration
The 3VA1 frame mounts on a DIN rail or can be screw-mounted in a panel. At 32 A, no forced cooling is required, but maintain the manufacturer's recommended spacing between adjacent breakers for thermal derating — typically 10 mm on each side for full rated current. The nut keeper kit is a mechanical aid for captive screw retention during assembly, common in OEM production lines.