This is the variant with the basic switch 3VA2450-5MN32-0AA0 inside, no auxiliary switch, and no communication module — a straightforward, hardwired motor protection breaker for a panel.
Above that, it derates: 495 A at 55 °C, 490 A at 60 °C, 485 A at 65 °C, and 480 A at 70 °C.
This MCCB's interrupting rating varies significantly with system voltage. At 240 V it's rated for 187 kA; at 415 V and 440 V it's 121 kA; at 500 V it drops to 75.6 kA; at 690 V it's 9 kA. The breaker also carries a 6 kA rating limited to 1 second, likely for short-time withstand during selective coordination studies.
Protection features and trip characteristics
Designed for motor protection, this breaker includes phase failure detection — a critical feature for three-phase motor loads where a lost phase can burn out a winding. The trip unit has a voltage trigger (undervoltage release is not fitted on this variant; the shunt trip is the only auxiliary release). Trip indicator is not present, so you won't get a visual flag on the breaker face after a trip — plan for remote indication via the shunt trip circuit or a separate auxiliary contact block.