What this 4-pole MCCB delivers
The Siemens SENTRON 3VA1140-6EE42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 40 A continuous current at 40 °C ambient, with a TM220 thermal-magnetic overcurrent release — meaning the thermal trip element and magnetic short-circuit response are fixed, not field-adjustable beyond the factory calibration. Breaking capacity is the headline number here: 220 kA at 240 VAC, 154 kA at 415 VAC, and still 121 kA at 440 VAC — figures that put it in the high-interrupting-capacity class for industrial switchboards where available fault current is severe. Current derating with ambient temperature is published per the table: 40 A holds through 50 °C, then steps down to 39 A at 55–60 °C, 38 A at 65 °C, and 37 A at 70 °C.
Dimensions are 130 mm height, 101.6 mm width, 70 mm depth — a 4-pole MCCB footprint that fits standard Siemens SENTRON mounting plates and busbar systems. The TM220 release designation indicates a specific thermal and magnetic calibration curve; consult the 3VA device manual for the exact trip characteristic.