What this MCCB is and where it lands
The Siemens SENTRON 3VA1096-3ED42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated 16 A continuous at 40 °C, carrying a TM210 thermal-magnetic release for line-protection duty in distribution panels and sub-feeders. Its 75.6 kA breaking capacity at 240 V AC gives it the interrupting headroom to serve as a main or branch breaker in high-fault industrial and commercial switchboards. The front face carries IP40 protection — fine for dry indoor enclosures, not for washdown zones.
Breaking capacity across voltages — selectivity planning
The interrupting rating drops as line voltage climbs: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at both 500 V and 690 V. That 7.5 kA floor at 690 V is the number to coordinate against when this breaker feeds a 690 V step-down transformer or a VFD input section — upstream protection must clear faults the MCCB cannot. The 800 V rated insulation voltage confirms the internal isolation is sized for 690 V systems.
Thermal derating and power loss
Rated 16 A from 40 °C through 55 °C, then derates to 15 A at 60–70 °C. The 10.6 W maximum power loss matters for panel heat budgeting — in a sealed enclosure with multiple breakers, that figure goes into the thermal rise calculation. Operating temperature range is -25 °C to 70 °C; storage extends from -40 °C to 80 °C.
Panel fit — dimensions and mounting
Width is 101.6 mm (4 in), depth 70 mm (2.76 in), height 130 mm (5.12 in). Four-pole MCCBs take up two standard 18 mm module positions per pole on a DIN rail or panel-mount plate. No undervoltage release, no communication module, no ground-fault monitoring — this is a straight thermal-magnetic line-protection breaker with no auxiliary electronics.