What it is and what it does
The Siemens 3VA1132-6EF32-0DC0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in low-voltage distribution. It carries 32 A continuously at 40 °C and derates to 30 A at 70 °C — a thermal curve worth checking if the panel ambient runs hot. Three-pole construction, rated insulation voltage 800 V, and an interrupting capacity that starts at 220 kA at 240 V and steps down to 17 kA at 690 V. That 220 kA figure at 240 V is the headline — it places this breaker in the high-interrupting tier for 240 V solidly grounded systems, useful where available fault current is high.
Interrupting ratings — what the numbers mean
At 415 V the SCCR is 154 kA; at 440 V it drops to 121 kA; at 500 V and 690 V it holds at 17 kA. The steep drop above 440 V is typical of a breaker whose arc-chamber and contact design are optimized for the 240–415 V range. If your secondary is 480 V or 600 V class, the 17 kA rating still covers most industrial service-entrance duty, but verify coordination with the upstream device.
Built-in accessories and field-fit
Factory-fitted with an undervoltage release (UVR) and two auxiliary switches HQ. The UVR trips the breaker when control voltage drops — typical for emergency-stop or undervoltage protection schemes. The auxiliary switches provide status feedback (open/closed/tripped) to a PLC or indicator lamp. No communication module on this variant; it is a plain breaker with hardwired aux contacts. Physical footprint: 130 mm high, 76.2 mm wide, 70 mm deep. That width is a standard 3-pole MCCB form factor for DIN-rail or panel-mount. The supplied basic switch order code is 3VA11326EF320AA0 — useful if you need to cross-reference the internal mechanism for spares.