The Siemens SENTRON 3VA2163-7MN36-0HA0 is a 3-pole molded case circuit breaker (MCCB) in the motor protection version, rated for a continuous current Iu of 63 A. It carries an ETU350M electronic overcurrent release with phase failure detection and a shunt trip (STL) auxiliary release. The breaking capacity reaches 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 52.5 kA at 690 V — figures that govern selectivity coordination in high-fault-current industrial distribution.
Current rating and thermal derating
The 63 A rating holds flat from 40 °C through 50 °C ambient. Above that it derates linearly: 60.48 A at 55 °C, 59.22 A at 60 °C, 57.96 A at 65 °C, and 56.7 A at 70 °C. The maximum power loss is 75 W. Operating range spans -25 °C to 70 °C; storage range -40 °C to 80 °C.
Release and accessory configuration
The overcurrent release is the ETU350M, an electronic trip unit with LSI protection curves (long-time, short-time, instantaneous) and phase failure detection. A shunt trip (STL) auxiliary release is integrated; the supplied basic switch is order code 3VA2163-7MN36-0AA0, and the integrated auxiliary trip is 3VA9688-0BL30. There is no undervoltage release, no auxiliary contact version, no ground fault monitoring, no communication function, and no trip indicator. Latching endurance is rated at 20,000 cycles. Rated insulation voltage Ui is 800 V.