What this MCCB delivers for a 100 A feeder
The Siemens SENTRON 3VA2010-5HN32-0CC0 is a 3-pole molded case circuit breaker rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to the enclosure's thermal limit. Interrupting capacity follows the voltage: 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. That SCCR curve covers most industrial distribution panels without a current-limiting upstream device. It ships with an undervoltage release (UVR) and two HQ auxiliary switches — the UVR trips the breaker when control voltage drops, which is standard for emergency-stop or safety-shutdown circuits where loss of control power must open the main contacts.
Panel fit and integration
Footprint: 105 mm wide, 181 mm tall, 86 mm deep. That 105 mm width is the standard 3-pole MCCB form factor for SENTRON 3VA2 — it drops into the same mounting base as the 3VA2010-5HL36-0BE0 without rewiring the bus bars or modifying the enclosure cutout. Power loss is 16 W at rated load — relevant for thermal budgeting inside a sealed panel, especially when grouping several breakers in a vertical stack. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The 100 A rating holds flat across the entire operating band — no derate curve to calculate.