The Siemens SENTRON 3VA2163-5HL36-0BA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current, designed for line protection in distribution panels. It carries an insulation voltage rating of 800 V, and its breaking capacity scales with system voltage: 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. The unit includes an undervoltage release (UVR) as the auxiliary release.
The breaker occupies 105 mm width, 181 mm height, and 86 mm depth on the panel. Three-pole footprint matches standard MCCB cutouts. The undervoltage release coil must be continuously energized for the breaker to remain closed — if the control voltage drops, the UVR trips the breaker open, which is a common scheme for emergency-stop or undervoltage protection circuits.
Breaking capacity and selectivity
The 187 kA interrupting rating at 240 V gives substantial fault-current headroom for low-voltage service-entrance or main feeder applications. At 415/440 V the rating drops to 121 kA — still high enough for most industrial secondary distribution. At 690 V the rating falls to 3.7 kA, so this breaker is not suited for 690 V main feeders with high available fault current; it belongs on lower-level subfeeds at that voltage.