The Siemens 3VA1163-3EF36-0AH0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for line protection, with a TM240 thermal-magnetic overcurrent release and a rated continuous current Iu of 63 A. Breaking capacity reaches 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V — covering most low-voltage distribution panels and motor branch circuits. Current rating holds at 63 A up to 50 °C ambient, then derates to 60.48 A at 55 °C and 56.7 A at 70 °C — plan your enclosure ventilation if the breaker sits near other heat sources.
Mounting and integration
Dimensions are 70 mm depth, 76.2 mm width, and 130 mm height — fits standard panel cutouts for 3VA1 frame breakers. Front face is IP40; no special sealing needed for dry indoor enclosures. Comes with 2 auxiliary switches plus 1 trip alarm switch (HQ version) for remote status feedback. No undervoltage release, no ground-fault monitoring, no communication module — this is a straight thermal-magnetic breaker for basic overcurrent protection.