The Siemens SENTRON 3VA1080-2ED42-0JA0 is a 4-pole molded case circuit breaker (MCCB) rated for line protection. It carries 80 A continuously at 40 °C through 50 °C, derating to 74 A at 70 °C — the thermal curve governs real panel loading, not just the nameplate. Breaking capacity hits 52.5 kA at 240 V, 32 kA at 415 V, and holds 7.5 kA up to 690 V, giving selectivity headroom for most distribution boards downstream of a transformer.
Sizing and coordination in the panel
At 70 mm deep, 101.6 mm wide, and 130 mm tall, this MCCB fits standard SENTRON 3VA panel footprints. The 4-pole body with integrated shunt trip (STL) release takes up one full module width on the DIN rail or mounting plate — plan for the same cutout as other 3VA1-series breakers. Insulation voltage is rated 800 V, so it can sit in a 690 V distribution section without extra creepage concerns. Maximum power loss is 19.2 W. In a sealed enclosure, that heat needs to be factored into the thermal budget — especially if the breaker is derated by adjacent devices. The TM210 overcurrent release is fixed thermal-magnetic, no communication module, no ground-fault monitoring. For a simple feeder or main breaker role, that keeps the BOM clean.