SENTRON 3VA1132-3EF32-0JH0 — 32 A MCCB, Line Protection, Active Production
The Siemens 3VA1132-3EF32-0JH0 is a SENTRON molded case circuit breaker (MCCB) rated for 32 A continuous current (Iu) in a 3-pole configuration, built for line protection duty. The interrupting ratings climb with applied voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V — figures that cover most industrial distribution panels up to 690 V line-to-line.
What the Ratings Mean for a Panel Fit
At 32 A continuous and 800 V rated insulation voltage (Ui), this MCCB handles typical motor branch circuits and sub-distribution boards. The thermal-magnetic release (TM240) is non-adjustable — set at the factory for 32 A at 40 °C ambient, and it holds 32 A all the way up to 50 °C; above that it starts a gentle thermal derating curve (30.72 A at 55 °C, down to 28.8 A at 70 °C). The 70 mm depth and 76.2 mm width fit standard MCCB panel cutouts and bus-bar spacing; the IP40 front protection means it's fine inside a closed panel but not exposed to washdown or dust ingress.
Auxiliaries and Releases — What's Onboard
Factory-fitted with a shunt trip release (STL) for remote tripping, plus 2 auxiliary switches and 1 trip alarm switch (HQ configuration) — enough to signal breaker status and fault alarms back to a PLC or annunciator panel. The integrated auxiliary trip module carries its own order code (3VA9688-0BL32) for replacement reference. No undervoltage release, no ground-fault monitoring, no communication module — this is a straightforward thermal-magnetic breaker for basic line protection, not a smart or selective unit.