MCCB for Motor Protection with Full Breaking Capacity Coverage
The Siemens SENTRON 3VA2110-5MN32-0DL0 is a 3-pole molded case circuit breaker (MCCB) rated at 100 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling. Designed specifically for motor protection, it integrates phase failure detection and an undervoltage release (UVR) so a lost phase or sagging supply trips the breaker before the winding takes damage. The interrupting ratings climb to 187 kA at 240 V and hold at 121 kA through 415–440 V; at 500 V it still clears 75.6 kA, and even at 690 V it manages 3.7 kA — a curve that covers most industrial distribution voltages without a series-rated upstream breaker. The auxiliary switch complement includes two auxiliary switches plus a trip alarm and an electrical alarm switch, giving the PLC or BMS a dedicated fault signal path independent of the undervoltage release circuit. A visible trip indicator confirms the breaker state at the panel door without needing to open the cover — useful for concurrent-maintenance walkthroughs where every second of fault isolation counts.
Sourcing and Lifecycle
This order code carries a current-production lifecycle stage, so it remains an active BOM line for new panel builds and spares planning. The 12.5 W maximum power loss is modest for a 100 A frame, keeping enclosure heat rise manageable in a packed cabinet. Operating temperature spans -25 °C to 70 °C; storage range extends from -40 °C to 80 °C. Sourced and quoted to order against an RFQ through independent distribution — availability and current pricing confirmed at quote time.