Breaking capacity varies by system voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V. At 415 V — common for industrial motor control centers — the 52.5 kA figure gives solid headroom above typical 25–36 kA SCCR requirements, meaning this breaker can sit upstream of smaller branch devices without coordination concerns at that level.
Thermal derating and ambient temperature — real-world current capability
Above that, derating is gradual: 153.6 A at 55 °C, 150.4 A at 60 °C, 147.2 A at 65 °C, and 144 A at 70 °C.
Integrated accessories and auxiliary wiring
The auxiliary trip module order code is 3VA9688-0BL32, which is the factory-integrated accessory that mates to the breaker's internal mechanism. No undervoltage release, no phase failure detection, no communication function, and no ground fault monitoring are included on this variant — it is a straight thermal-magnetic line protection breaker with shunt trip capability. The voltage trigger function is present, meaning the shunt trip can be wired to a remote pushbutton or safety relay for emergency off. Front IP40 protection covers the operator interface — suitable for dry indoor panel environments, not washdown areas. Mechanical endurance is rated at 15,000 operations, which is typical for an MCCB in distribution duty where it cycles rarely.
Dimensions are 130 mm height, 76.2 mm width (standard 3-pole MCCB footprint), and 70 mm depth. The width matches the 3VA platform's 3-pole form factor — it occupies the same panel cutout as other 3VA three-pole breakers, so swapping between variants within the family requires no enclosure modification.