Siemens 3VA2010-5JQ32-0BL0 — 100 A SENTRON MCCB with 187 kA Interrupting Capacity
The Siemens 3VA2010-5JQ32-0BL0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous at 40 °C through 70 °C — no derating needed across that full ambient span, per the datasheet. It carries a 187 kA interrupting capacity at 240 VAC, dropping to 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. That SCCR headroom means it can be specified upstream of a panel with high available fault current without cascading coordination issues. The basic switch supplied is order code 3VA20105JQ320AA0.
Interrupting Capacity and Coordination
The interrupting ratings span 187 kA at 240 V down to 3 kA at 690 V. For a 480 V panel (common in North American industrial distribution), the relevant figure is 121 kA at 440 V — that is the closest published point.
Thermal Performance and Power Loss
Rated current holds at 100 A from 40 °C through 70 °C ambient — no thermal derating curve to calculate for standard panel environments. Maximum power loss is 16 W at rated load, which is modest for a 100 A frame. The unit measures 86 mm deep, 105 mm wide, and 181 mm high, fitting standard MCCB panel cutouts.