The Siemens SENTRON 3VA1220-6EF42-0HC0 is a 4-pole molded case circuit breaker (MCCB) rated 200 A at 40 °C, sized for line protection in distribution panels. Its 220 kA breaking capacity at 240 V means it can safely interrupt very high fault currents without upstream damage — a key spec for high-available-fault installations like transformer secondaries or large motor control centers.
Ratings and what they mean
Rated current holds at 200 A from 40 °C through 50 °C, then derates to 194 A at 55 °C and down to 176 A at 70 °C — the thermal curve matters if this breaker sits in a warm enclosure or near other heat sources. Breaking capacity steps down with voltage: 220 kA at 240 V, 154 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. That voltage-dependent SCCR tells you the maximum fault current the breaker can clear at each system voltage; for a 480 V panel you'd use the 440 V or 500 V column depending on the actual line-to-line voltage. Rated insulation voltage is 800 V, so the breaker is suitable for 690 V systems with margin. Power loss at rated load is 42 W maximum — factor that into enclosure thermal calculations if multiple breakers are ganged.
Construction and integration
This MCCB is designed for line protection (not motor protection) and ships with a shunt trip release (STL) plus 2 auxiliary switches HQ. No undervoltage release, no ground-fault monitoring, no communication function — it's a straight thermal-magnetic breaker with remote trip capability via the shunt coil. Dimensions: 158 mm high, 140 mm wide, 70 mm deep. The 70 mm depth is the front-to-back panel footprint; verify busbar and enclosure depth clearance against that number.
Lifecycle and sourcing
Lifecycle stage is marked current — this is an active-production part in the SENTRON 3VA series. For current pricing and availability, submit an RFQ; the part is sourced through independent distribution and quoted to order.