Siemens 3VA2025-5HL32-0BD0 — 25 A SENTRON MCCB for Line Protection
The Siemens SENTRON 3VA2025-5HL32-0BD0 is a 3-pole molded case circuit breaker rated for 25 A continuous current across the full ambient range from 40 °C to 70 °C, making it a thermally stable choice for line protection in distribution panels. Its interrupting capacity reaches 187 kA at 240 VAC, stepping down to 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V — numbers that govern selectivity coordination with downstream breakers. The unit ships with three auxiliary switches and an undervoltage release (UVR) pre-installed, so you avoid a separate order for those accessories.
That simplifies thermal budgeting in a packed panel. The interrupting ratings at each voltage level tell you where this breaker can clear a fault without upstream fuses or a larger frame taking over. At 240 V you have 187 kA of headroom; at 690 V it drops to 3 kA, so verify your available fault current at that voltage if you're using it in a 690 V system. The 3.34 W maximum power loss is modest — negligible for enclosure heat rise calculations unless you're stacking dozens in one cabinet.
Dimensions are 105 mm wide, 181 mm high, and 86 mm deep — a standard 3-pole MCCB footprint that fits Siemens 3VA2 panelboards and most DIN-rail adapter plates. The undervoltage release (UVR) is factory-fitted, so you don't lose a pole space for an external trip module.