The Siemens SENTRON 3VA1032-4ED32-0JH0 is a 3-pole molded case circuit breaker (MCCB) designed for line protection — the primary role is guarding feeder and branch circuits against overload and short-circuit, not motor-starting duty. Rated 32 A at 40 °C, it holds that full rating through 50 °C, then derates to 30 A at 70 °C (-). That thermal curve matters for panel builders: if this breaker sits in a warm enclosure, you still get the full 32 A up to 50 °C before needing to account for derating.
Breaking capacity by voltage level
Short-circuit performance is voltage-dependent: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. The 121 kA figure at 240 V is the headline number — it tells you this breaker can sit on a high-fault panelboard without needing a current-limiting fuse upstream. The 11.9 kA at 690 V is the floor; if your system voltage is in that range, verify the available fault current stays under that ceiling.
Auxiliary configuration and panel fit
Factory-fitted with 2 auxiliary switches plus 1 trip alarm switch (HQ) and a shunt trip (STL) release. That means it arrives ready for remote trip and status feedback — no field-install kit needed. The 70 mm depth, 76.2 mm width, and 130 mm height match the standard SENTRON 3VA frame footprint; it occupies three pole positions on the DIN rail or mounting plate. Rated insulation voltage is 800 V, covering 480/600 V class systems with headroom.
Power loss and environmental limits
Maximum power loss is 10.6 W — relevant for thermal budgeting in a sealed enclosure. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The storage minimum of -40 °C means it can sit in an unheated warehouse through a cold winter without damage.