What the ratings mean for fit
The 3VA2325-6HN32-0DJ0 is a Siemens SENTRON molded case circuit breaker (MCCB) rated for 250 A continuous current with no derating across the full 40 °C to 70 °C ambient range — that flat thermal curve means you don't have to oversize for a warm panel, a common headache in enclosed switchgear. The 3-pole design carries breaking capacities of 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 7.5 kA at 690 V; these are the fault currents it can safely interrupt at each voltage level, so the 415 V figure is the one you'll check against your service entrance or distribution board's available fault current. Line protection design means it's configured for feeder/cable protection, not motor or generator duty — the trip curve and accessories are set for that role.
Built-in accessories and panel integration
This MCCB ships with an undervoltage release (UVR) as the auxiliary release and a complement of 2 auxiliary switches plus 1 trip alarm switch. The UVR will trip the breaker when control voltage drops below its dropout threshold — standard for emergency-stop or undervoltage protection schemes. Dimensions are 248 mm high, 138 mm wide, 110 mm deep; the 110 mm depth is the projection from the mounting surface into the enclosure, so check your gland plate clearance if you're retrofitting into a shallow cabinet. No communication function — this is a standalone thermal-magnetic or electronic-trip MCCB, not a smart breaker with Modbus or PROFINET onboard.