What this MCCB is and what it does
The Siemens 3VA2110-7MN36-0HA0 is a SENTRON-series 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current, built for motor protection duty with an ETU350M electronic overcurrent release. The shunt trip release (STL) lets you remotely trip the breaker via a control signal.
Breaking capacity — what the numbers mean for your panel
The 330 kA at 240 V is the maximum fault current this MCCB can safely interrupt at that voltage level. At 415 V and 440 V it still handles 242 kA, and at 690 V it's rated 52.5 kA. For a site electrical engineer sizing for selectivity, those figures tell you this breaker sits upstream in a high-fault-current distribution — think transformer secondary or large motor feeder — where downstream breakers need to coordinate without cascading. The 100 A rating holds flat from 40 °C up to 50 °C, then derates to 90 A at 70 °C, so panel ambient temperature matters for continuous loading.
Integration and mounting
At 181 mm tall, 105 mm wide, and 86 mm deep, this MCCB mounts into a standard panel via screw-clamp terminals or plug-in base, depending on the accessory kit. The 3-pole form factor fits a 3-module-wide cutout in most switchboard chassis. Phase failure detection is built into the ETU350M — no separate voltage monitor needed for motor protection. The shunt trip release requires a control voltage to trip; it's not an undervoltage release (that's a separate variant), so plan the control wiring accordingly.
Thermal and environmental limits
Operating range is -25 °C to 70 °C, storage from -40 °C to 80 °C. Maximum power loss is 75 W at rated current — that's the heat you need to vent in a sealed enclosure. The breaker has no auxiliary contact built in (order separately if you need status feedback), and no communication module onboard. It's a standalone protection device, not a smart breaker.