Siemens 3VA1163-3GF46-0AA0 — 63 A SENTRON MCCB, 4-Pole, TM240 Release
The Siemens 3VA1163-3GF46-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current, with a 4-pole configuration and a TM240 thermal-magnetic overcurrent release. It is designed for line protection in industrial distribution panels, sized to fit a 70 mm deep by 101.6 mm wide footprint on a DIN rail or direct-mount backplane. The TM240 release provides fixed thermal and magnetic trip thresholds, with no undervoltage release, no voltage trigger, and no ground-fault monitoring built in — this is a straightforward line-protection breaker for standard AC power distribution.
Breaking Capacity and Thermal Derating
Rated breaking capacity reaches 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V — the interrupting capability drops sharply above 440 V, so verify the available fault current at the installation voltage. Continuous current holds at 63 A from 40 °C through 50 °C ambient, then derates to 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. For a panel running at 55 °C ambient, the breaker is good for 62 A — a 1 A reduction that matters for a fully loaded feeder. Maximum power loss is 17.3 W at rated current; factor that into enclosure thermal calculations, especially in a sealed cabinet.
Environmental and Compliance Notes
Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Insulation voltage rated at 800 V. The breaker carries no communication function, no trip indicator, and no other measurement function — it is a pure overcurrent protection device.