Rating breakdown — what the numbers mean for panel fit
The 3VA2325-5MN32-0BC0: Rated 250 A continuously across the full 40 °C to 70 °C ambient range — no derating needed up to 70 °C, which simplifies panel thermal budgeting for a motor-protection MCCB in a warm enclosure. Breaking capacity of 121 kA at 415 V (and 187 kA at 240 V) means this breaker can safely interrupt very high fault currents typical of large transformer-fed installations; the 7.5 kA at 690 V still covers most 690 V motor circuits. Three-pole design with undervoltage release and phase failure detection — the UVR drops the breaker on loss of control voltage, and the phase-failure circuit trips on single-phasing, both standard for motor protection duty.
Physical integration — panel and DIN considerations
Dimensions 248 mm high × 138 mm wide × 110 mm deep; the 138 mm width (5.43 in) is standard for a 3-pole MCCB in this class, so it fits existing SENTRON 3VA2 panel cutouts and busbar systems without re-spacing.
Auxiliaries and releases — what ships on the breaker
Factory-fitted with two HQ auxiliary switches and an undervoltage release (UVR) — the UVR is the 3VA2325-5MN32-0AA0 basic switch variant. No ground-fault monitoring, no communication module. Trip indicator is absent.
Environmental limits and power loss
Operating temperature range -25 °C to +70 °C; storage from -40 °C to +80 °C. Maximum power dissipation 40 W at rated load — factor this into enclosure cooling calculations.