63 A MCCB, 3-pole, line protection — interrupting curve across voltage levels
The Siemens SENTRON 3VA2163-5HM32-0AA0 is a 3-pole molded case circuit breaker rated for 63 A continuous current at up to 70 °C ambient, with no derating needed across the full temperature range. It is designed for line protection in distribution panels and switchboards, carrying a rated insulation voltage of 800 V. The interrupting capacity is voltage-dependent: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V — so the SCCR you can claim downstream depends on the system voltage. The breaker measures 86 mm deep, 105 mm wide, and 181 mm high, fitting standard panel footprints for 3-pole MCCBs in this class.
Ground-fault monitoring and trip characteristics
The breaker includes a ground-fault monitoring version using summation current formation on the L-conductor. The adjustable thermal-magnetic trip range spans from a minimum of 95 A to a maximum of 756 A, with an initial setting value of 16 A. There is no undervoltage release, no voltage trigger, no communication function, and no trip indicator on this variant — it is a straight line-protection device without auxiliary signaling. Maximum power loss is 4 W. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.