What this MCCB is and what it does
The Siemens 3VA2010-5HN36-0JA0 is a SENTRON molded case circuit breaker (MCCB) in a 3-pole configuration, rated for 100 A continuous current at up to 70 °C ambient without derating. It is designed for line protection in distribution panels and switchgear, with a built-in shunt trip (STL) release for remote tripping. The interrupting capacity reaches 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3 kA at 690 V — covering most low-voltage fault scenarios downstream of a transformer.
Key ratings and what they mean for fit
The 100 A continuous rating holds flat from 40 °C through 70 °C — no derating curve to calculate for warm enclosures. The 800 V rated insulation voltage (Ui) gives headroom for 480/600 V systems. The 13.5 W maximum power loss at rated current matters for panel heat budgeting; if you're packing multiple breakers in a small enclosure, that heat adds up. Physical footprint: 181 mm high, 105 mm wide, 86 mm deep. That 105 mm width is the standard 3-pole MCCB form factor for this class — fits existing SENTRON mounting bases and busbar systems without panel rework.
Operating environment and approvals context
Rated for operation from -25 °C to 70 °C, storage from -40 °C to 80 °C. The shunt trip release allows remote trip via a control voltage — typical for emergency-stop circuits or supervisory shutdown systems. No undervoltage release or ground-fault monitoring on this variant; those are separate order-code options in the 3VA family.