MCCB for motor branch circuits
The Siemens 3VA2325-5MP32-0AA0 is a SENTRON molded case circuit breaker (MCCB) designed specifically for motor protection. It carries a continuous current rating of 250 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling. The adjustable trip class (10A, 10/10E, 20/20E, 30/30E) lets you match the breaker's thermal curve to the motor's starting profile: set it to 10 for standard-start pumps and fans, or 20/30 for high-inertia loads like conveyors or crushers that need a longer start window.
Interrupting capacity and selectivity
Rated interrupting capacity hits 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V. That 187 kA figure at 240 V means it handles high-fault scenarios near a transformer secondary without upstream breakers needing to clear first — useful for panel selectivity studies. At 690 V the 7.5 kA rating is still adequate for most motor branch circuits, but verify against the available fault current if feeding from a large step-up transformer.
Dimensions and panel fit
Measures 110 mm deep by 138 mm wide by 248 mm high. The 138 mm width is a standard 3-pole MCCB footprint — it fits existing SENTRON 3VA2 panel cutouts and busbar systems without rework. Depth of 110 mm leaves clearance for rear-connected accessories or cable entries in a 400 mm deep enclosure.
Lifecycle and sourcing posture
Listed as current production (active lifecycle stage). This is a standard catalog item from the SENTRON 3VA2 family, not a phase-out or NRND line. Sourced to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time. No known PCN or EOL notice on this order code.
Communication and monitoring
Includes communication function and phase failure detection. The communication capability allows integration into a plant-wide energy management or motor control system — the breaker can report trip events, load current, and status over a bus (typically via a communication module, not detailed here). Phase failure detection adds protection against single-phasing on a motor load, which is common in three-phase industrial circuits.