Breaking capacity and selectivity
The 3VA2110-5HN36-0BA0: The 187 kA at 240 V is the headline number, but the real-world figure for most industrial 400 V class panels is 121 kA at 415 V (and the same at 440 V). That's still serious fault current handling — enough to sit downstream of a transformer without needing a current-limiting fuse ahead of it. At 500 V the rating drops to 75.6 kA, and at 690 V it's 3.7 kA, which tells you this breaker is sized for 400 V class systems, not 690 V drives.
Thermal performance and derating
The continuous current rating holds flat at 100 A from 40 °C all the way up to 70 °C ambient. That's unusual — most MCCBs start derating above 40 °C. The 12.5 W maximum power loss is the heat you need to vent from the enclosure; at 100 A continuous, that's manageable in a standard steel enclosure with passive ventilation, but pack multiple breakers tight and the internal temperature rise adds up.
Undervoltage release and auxiliary options
This variant ships with an undervoltage release (UVR) fitted — the design of the auxiliary release is listed as undervoltage release (UVR). That means the breaker trips if the control voltage drops below a threshold, which is standard for safety circuits where a loss of control power should open the main contacts. There's no voltage trigger or trip indicator on this unit, and no communication function built in. The supplied basic switch is order code 3VA21105HN360AA0.
Physical fit and panel integration
Dimensions are 181 mm high, 105 mm wide, 86 mm deep. That's a standard SENTRON 3VA frame size — it mounts on a DIN rail or can be screw-fixed to a backplate. The 86 mm depth means it clears most 200 mm deep enclosures with room for wiring gutters. No ground-fault monitoring version on this unit, so if you need GF protection, you're adding an external module or choosing a different suffix.
Environmental range
Operating ambient range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The rated insulation voltage is 800 V, which covers 400 V class systems with margin. No communication function, so this is a straight electromechanical breaker — no Modbus, no PROFIBUS, no remote monitoring.