What this MCCB delivers on the line
The Siemens SENTRON 3VA2110-5MN36-0KL0 is a 3-pole molded case circuit breaker rated for 100 A continuous across the full 40 °C to 70 °C ambient range — no derating needed as the panel warms up. That 100 A holds flat from 40 °C all the way to 70 °C, so it's a solid pick for a crowded enclosure where heat builds. Breaking capacity hits 121 kA at 415 V, meaning it can safely interrupt a fault current up to that level without upstream breakers needing to clear it first. At 240 V it's rated for 187 kA, and at 500 V it still holds 75.6 kA — only at 690 V does it drop to 3.7 kA, which is typical for a 100 A frame at that voltage. This is a motor protection design, so it includes phase failure detection — a critical feature for three-phase motor loads where losing a phase can burn out a winding before the overload relay catches it. The trip indicator and voltage trigger give the panel builder a visual and electrical signal that the breaker has opened.
Panel fit and integration
At 181 mm high, 105 mm wide, and 86 mm deep, this MCCB fits a standard SENTRON mounting footprint. The 105 mm width for a 3-pole 100 A frame is typical. The auxiliary switch configuration — 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch — gives the controls integrator status feedback for both normal and fault states without needing external relays. The shunt trip release allows remote tripping from a safety circuit or emergency stop chain.
Lifecycle and sourcing posture
Power loss is rated at 10 W maximum, which matters for thermal calculations in a sealed enclosure. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C — fine for most indoor industrial environments.