Product identity and function
The Siemens SENTRON 3VA2225-5HM32-0AA0 is a 3-pole molded case circuit breaker (MCCB) designed for line protection — the primary role is protecting cables and busbars against overload and short-circuit in distribution panels. Rated continuous current is 250 A at 40 °C ambient, and it holds the same 250 A rating through 50 °C before derating begins — at 55 °C it carries 241 A, at 65 °C it carries 222 A, and at 70 °C it carries 213 A.
Breaking capacity — what the voltage-dependent ratings mean
Breaking capacity is voltage-dependent: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V. These are the maximum fault currents the breaker can safely interrupt at each voltage level — the 690 V figure is the limiting case for high-voltage distribution in industrial networks. The 187 kA at 240 V rating is typical for high-fault-capacity panelboards fed close to a transformer; the 4.5 kA at 690 V is a lower but still serviceable interrupt rating for 690 V industrial systems.
Ground-fault monitoring and auxiliary functions
This variant includes ground-fault monitoring via summation current formation on the L-conductor — it detects residual currents by summing the phase currents, not via a separate neutral CT. No undervoltage release, no communication function, and no voltage-trip trigger are fitted on this order code. Maximum power loss is 48 W, which matters for enclosure thermal calculations when grouping multiple breakers in a closed panel.
Physical fit and environmental range
Dimensions: 181 mm height, 105 mm width, 86 mm depth. The 105 mm width is the standard 3-pole MCCB footprint for this SENTRON frame. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. These cover most indoor industrial environments and unheated warehouses.
Lifecycle and sourcing
Lifecycle status is current production — this order code is an active catalog item in the SENTRON 3VA family, not subject to phase-out or last-time-buy as of the latest manufacturer record.