What this MCCB is and what it does
The Siemens SENTRON 3VA2010-5HL36-0BA0 is a 3-pole molded case circuit breaker (MCCB) rated for a continuous current of 100 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling. It is designed for line protection, meaning it guards cables and busbars against overloads and short circuits in distribution panels, switchboards, and industrial feeders. The unit includes a factory-fitted undervoltage release (UVR) that trips the breaker when the control voltage drops below a set threshold — a standard requirement for safety circuits that need to guarantee a break on loss of control power.
Breaking capacity across the voltage range
The interrupting rating is 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V — these are the maximum fault currents the breaker can safely clear at each voltage level, which decides whether it coordinates with upstream gear or requires a current-limiting upstream device.
Dimensions and panel fit
The breaker measures 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint that fits most low-voltage switchboard cubicles and panel-mount cutouts without modification.