The Siemens SENTRON 3VA1050-3ED36-0DH0 is a 3-pole molded case circuit breaker (MCCB) rated 50 A at 40 °C, designed for line protection in distribution panels. Its breaking capacity reaches 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V, tapering to 7.5 kA at 500 V and 690 V — figures that govern selectivity coordination downstream.
Mounts on a standard DIN rail or panel-mount base. The 70 mm depth and 76.2 mm width fit a 3-pole MCCB footprint common in SENTRON distribution boards.
This breaker includes an undervoltage release (UVR) and comes pre-fitted with 2 auxiliary switches plus 1 trip alarm switch (HQ). The UVR trips the breaker when control voltage drops below a threshold — useful for emergency-off circuits or undervoltage protection on motor feeders.