The Siemens SENTRON 3VA1010-4ED42-0DC0 is a 4-pole molded case circuit breaker (MCCB) rated for 100 A continuous current (Iu) with a TM210 thermal-magnetic overcurrent release. It's built for line protection in distribution panels, switchboards, and motor control centers where you need a compact 100 A frame with high interrupting capacity.
Interrupting capacity is the headline here: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. That 121 kA at 240 V means it can handle high-fault-current points like a transformer secondary or a large motor starter feeder without cascading upstream. The 75.6 kA at 415 V covers most industrial 400 V distribution scenarios.
Rated insulation voltage (Ui) is 800 V, so it's suitable for 690 V systems with margin. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C. Current derating starts at 55 °C: 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, 90 A at 70 °C. Below 55 °C it holds 100 A flat. The TM210 release is a fixed thermal-magnetic unit — no electronic adjustment, but reliable and field-proven.
Comes with 2 auxiliary switches (HQ type) and an undervoltage release (UVR) integrated. The UVR is factory-fitted per the design — it trips the breaker if control voltage drops below the dropout threshold, which is standard for motor safety circuits and emergency-stop chains. No ground-fault monitoring, no communication module, no voltage-trigger function. The auxiliary trip accessory is order code 3VA9608-0BB25 if you need a shunt trip later.