Line protection MCCB with undervoltage release
The Siemens SENTRON 3VA1050-4ED36-0DC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 50 A continuously at 40 °C and derating to 45 A at 70 °C. The integrated undervoltage release (UVR) drops the trip mechanism if control voltage falls below threshold, a common requirement for emergency-stop circuits and safety disconnects.
At 70 mm deep × 76.2 mm wide × 130 mm tall, this MCCB fits standard SENTRON 3VA panel footprints and mounts on a DIN rail or direct screw-fix.
Breaking capacity 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.
