MCCB for line protection — 25 A, 3-pole, high interrupting capacity
The SENTRON 3VA2125-7HM36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 25 A continuous current, designed for line protection in distribution panels. Its interrupting capacity reaches 330 kA at 240 V, tapering to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V — the steep drop at 690 V means this breaker is best applied on 240–500 V systems where fault currents are high. The 800 V rated insulation voltage confirms it can be installed in 690 V panels, but the 3.7 kA interrupting rating at that voltage limits its use to low-fault-current branches.
Ground-fault monitoring and thermal performance
This MCCB includes summation-current ground-fault monitoring on the line conductor — it senses imbalance across all poles, so it can trip on leakage without needing a separate GFCI module. The continuous current rating holds at 25 A across the full operating temperature range from -25 °C to 70 °C (–, –), meaning no derating is needed in a warm enclosure up to that limit. Maximum power loss is 0.6 W, negligible for panel heat budgeting.
DIN-rail footprint and panel integration
Dimensions are 105 mm wide, 181 mm high, 86 mm deep (–) — a standard 3-pole MCCB footprint that fits most DIN-rail distribution boards. No undervoltage release and no communication function means this is a straight thermal-magnetic breaker; trip indication is not provided, so plan for an external status lamp or PLC input if remote trip signaling is needed.