Siemens SENTRON 3VA1196-3EF32-0DH0 — 3-Pole MCCB with Undervoltage Release
The Siemens SENTRON 3VA1196-3EF32-0DH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 16 A continuously at 40 °C ambient. Breaking capacity hits 75.6 kA at 240 V AC, stepping down to 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V — so it handles high-fault industrial feeds without cascading upstream. This MCCB comes fitted with an undervoltage release (UVR) and a factory-installed auxiliary switch block: 2 auxiliary switches plus 1 trip alarm switch HQ. That means it drops the load on loss of control voltage and reports trip status back to the PLC or annunciator — no separate contactor or monitoring relay needed for those functions.
Dimensions and Panel Fit
At 130 mm tall, 76.2 mm wide, and 70 mm deep, this 3-pole MCCB fits a standard 3-module-wide DIN-rail footprint. The 70 mm depth means it clears most shallow gland-plate enclosures — check your back-panel clearance if you're retrofitting into a tight pull box. Rated insulation voltage is 800 V, so it's good for 480 V and 600 V class systems with headroom. Power loss at rated load runs 13.1 W maximum — factor that into your enclosure thermal budget if you're packing several breakers side by side at full load.
Thermal Derating and Ambient Range
The 16 A rating holds flat from 40 °C up through 55 °C. At 60 °C it derates to 15 A, and stays at 15 A through 70 °C. That's a clean, predictable derating curve — no surprise drop at 50 °C like some older MCCB lines. Operating ambient spans -25 °C to 70 °C; storage range is -40 °C to 80 °C.