The Siemens SENTRON 3VA2063-6HN32-0BA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C, with a 756 A frame that determines the maximum overcurrent trip setting. It carries an undervoltage release (UVR) as standard — a key detail for safety circuits where loss of control voltage must trip the breaker immediately.
Breaking capacity at the voltages that matter
At 240 V it interrupts 242 kA; at 415 V and 440 V it handles 187 kA; at 500 V the rating drops to 121 kA, and at 690 V it is still capable of 3 kA.
