The Siemens 3VA2025-5JP36-0AA0 is a 3-pole SENTRON molded case circuit breaker rated for 25 A continuous current across the full 40 °C to 70 °C ambient range — no derating needed as the panel warms up near the load bank. Its ETU550 electronic trip unit gives you adjustable long-time delay (0.5 to 25 s) and short-time delay (up to 0.5 s), so you can shape the curve for selective coordination downstream. The interrupting capacity sits at 187 kA at 240 V and still holds 121 kA at 415 V, which is serious fault-clearing headroom for a 25 A frame — you're not going to outrun this breaker on a low-voltage motor center.
Selectivity and coordination
The ETU550's adjustable time bands let you dial in a delay so a fault on a branch trips the downstream breaker first, not this one. The 187 kA SCCR at 240 V gives you room to feed a panel with a high available fault current without cascading failure.
The 3VA2025-5JP36-0AA0 measures 86 mm deep, 105 mm wide, and 181 mm tall — a compact footprint for a 3-pole MCCB with this interrupting capacity.