400 A line protection with 187 kA interrupting capacity
The Siemens 3VM1340-5ED42-0AA0 is a SENTRON molded case circuit breaker (MCCB) sized for 400 A at 40 °C continuous, with a 4-pole configuration and a TM210 thermal-magnetic overcurrent release. Rated operational voltage is 690 V AC, with a rated insulation voltage of 800 V, so it suits 480Y/277 V and 600 V delta systems common in North American and European industrial panels. The 4-pole design handles three-phase plus neutral switching, or can be used on three-phase loads with the fourth pole as a switched neutral.
Thermal-magnetic trip and derating profile
The TM210 trip unit is a fixed thermal-magnetic type — no interchangeable rating plugs, no electronic adjustments. Maximum power loss is 92 W at rated current — a factor for enclosure heat rise calculations when multiple breakers are ganged in a single panel.
Interrupting ratings across common system voltages
At 415 V and 440 V AC, the interrupting capacity holds at 121 kA; at 500 V it drops to 76 kA. For DC applications, the maximum rated operational voltage is 500 V DC — the manufacturer directs to the 3VA manual for specific DC switching capacity values, as the DC performance depends on the time constant and pole configuration.
The 110 mm depth is the body depth; allow additional clearance for rear terminals and arc-chamber venting per the manufacturer's mounting instructions.