The Siemens SENTRON 3VA2110-6HN36-0BL0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed in a warm panel. Its interrupting capacity hits 242 kA at 240 V, 187 kA at 415/440 V, and still holds 121 kA at 500 V, which puts it in the high-fault tier for industrial switchboards. The 86 mm depth and 105 mm width fit standard SENTRON mounting patterns, so it swaps into existing 3VA panel layouts without re-drilling the backplate.
What the ratings mean for your panel
The 100 A rating is flat from 40 °C to 70 °C — no thermal derating curve to calculate. That matters when the breaker sits next to a hot transformer or in a non-ventilated enclosure. The 242 kA at 240 V is the SCCR you can count on for fault coordination upstream; at 690 V it drops to 3.7 kA, so verify the available fault current if you're feeding a 690 V bus. The 3-pole design with line protection means it's set up for feeder or main breaker duty, not motor protection — no overload relay curve inside.
Built-in auxiliary and release options
This variant ships with two auxiliary switches, one trip alarm switch, and one electrical alarm switch (HQ type), plus an undervoltage release (UVR). The UVR trips the breaker when control voltage drops below a threshold — standard for emergency-stop circuits or undervoltage protection on motor feeders. The alarm switches give remote indication of trip vs. normal state, which saves a panel builder from adding separate monitoring relays.