SENTRON 3VA2110-7MN32-0KL0 — 100 A Motor Protection MCCB
The Siemens 3VA2110-7MN32-0KL0 is a SENTRON molded case circuit breaker (MCCB) designed specifically for motor protection. It's a 3-pole unit rated a full 100 A across the entire 40 °C to 70 °C operating range, so you don't lose headroom in a warm panel. This breaker carries a 330 kA interrupting rating at 240 V, tapering to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. That's serious fault-current capability for a 100 A frame — it handles high available fault currents at the service entrance or in a distribution panel without needing a current-limiting upstream device. It ships with a built-in shunt trip (STL) release and a full auxiliary switch complement: 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch (HQ). Phase failure detection is standard, and there's a voltage trigger and trip indicator on the front for quick fault isolation.
Panel Fit and Integration
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard SENTRON 3VA footprint that drops into existing panel layouts without re-drilling. The 86 mm depth leaves room for rear-connected busbars or cable ducts behind the DIN-rail mounting plate. Maximum power loss is 10 W, so heat buildup in a sealed enclosure is manageable. The basic switch assembly carries order code 3VA21107MN320AA0, meaning the internal switching mechanism is a known service part if you ever need to replace just the contact block.
What the Ratings Mean for Your Panel
The flat 100 A rating from 40 °C to 70 °C means this breaker doesn't derate as the panel warms up — a real advantage in a motor control center where ambient can climb. Many MCCBs lose 10–20 % at 60 °C; this one holds full rated current. The 330 kA at 240 V is the SCCR you can count on for a 480Y/277 V panel fed from a large transformer — it's enough to coordinate with most upstream fuses or breakers without requiring a current-limiting device. At 690 V the rating drops to 3.7 kA, which still covers most motor branch circuits at that voltage. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C. That covers unheated warehouses and outdoor enclosures in most climates.