SENTRON 3VA1220-6EF42-0JA0 — 200 A MCCB with Shunt Trip, Current Production
The Siemens 3VA1220-6EF42-0JA0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection, carrying a TM240 thermal-magnetic release and a built-in shunt trip (STL) auxiliary release. It is a 4-pole unit rated 200 A continuously at 40 °C, with a rated insulation voltage of 800 V. The interrupting capacity reaches 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 — figures that govern selectivity and SCCR coordination in a distribution panel. Current-carrying capacity derates with ambient temperature: 200 A through 50 °C, then 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C. The thermal-magnetic release (TM240) provides fixed thermal and magnetic trip thresholds, so the breaker is sized for a specific load range — not field-adjustable for short-circuit pickup.
Physical Fit & Panel Integration
Dimensions: 140 mm wide, 158 mm high, 70 mm deep. The 4-pole footprint matches standard Siemens SENTRON 3VA mounting patterns — direct panel-mount or DIN-rail adapter (not included). The 70 mm depth leaves clearance behind a typical 200 mm deep enclosure gland plate.
Auxiliary Release & Communication
This variant includes a shunt trip (STL) auxiliary release — a voltage-triggered trip coil for remote or emergency-off circuits. No undervoltage release, no ground-fault monitoring, and no communication function are fitted. The basic switch supplied is order code 3VA12206EF420AA0.