MCCB for line protection — 200 A continuous, 4-pole, high interrupting capacity
The Siemens SENTRON 3VA1220-4GF42-0CC0 is a 4-pole molded case circuit breaker (MCCB) rated for 200 A continuous current (Iu) at 40 °C, with a TM240 thermal-magnetic overcurrent release. It is configured for line protection — meaning it guards the feeder or main bus against overload and short-circuit faults, not downstream branch devices. The interrupting ratings are 121 kA at 240 V, 75.6 kA at 415 V, 25 kA at 440 V, and 11.9 kA at 690 V, which covers most industrial distribution panels up to 690 V line-to-line. The 200 A rating holds flat through 50 °C; above that it derates per the thermal curve to 176 A at 70 °C. The front face carries an IP40 protection rating, suitable for enclosed panel mounting where the breaker is not exposed to washdown or dust ingress.
Dimensions and panel fit
The breaker measures 158 mm high, 140 mm wide, and 70 mm deep. That 70 mm depth is the dimension from the mounting surface to the furthest projection — relevant when sizing the enclosure depth behind the gland plate. The 140 mm width across four poles means it occupies a standard 4-pole MCCB footprint; no special adaptor plate required for a DIN-rail or bolted bus connection. Verify the bus-bar pitch matches the 4-pole terminal spacing before committing the panel layout.
Auxiliary and release configuration
This MCCB ships with an undervoltage release (UVR) fitted — the release design is listed as undervoltage release (UVR). It also carries 2 auxiliary switches (HQ type) for status feedback to a PLC or indication lamp. The integrated auxiliary trip order code is 3VA9608-0BB24, which is the factory-matched trip unit for this breaker. There is no voltage trigger, no communication function, no phase failure detection, and no ground fault monitoring on this variant. The N-conductor protection is set to 100%, meaning the neutral pole is protected at the same rating as the phase poles.