Motor protection MCCB for high-current branch circuits
Rated 500 A continuously at 40 °C (derates to 480 A at 70 °C), it sits on the high end of the 3VA2 frame, sized for large motor branch circuits or feeder duty in a panel. Interrupting capacity is the headline here: 187 kA at 240 V AC, 121 kA at 415/440 V, 75.6 kA at 500 V, and 9 kA at 690 V. At 690 V the 9 kA rating is lower, but that voltage is uncommon in industrial distribution; the 415 V / 121 kA is the practical number for most 400 V-class systems.
The breaker measures 248 mm high by 138 mm wide by 110 mm deep.
Thermal and environmental limits
The 500 A rating holds flat from 40 °C to 50 °C, then drops 5 A per 5 °C step to 480 A at 70 °C — useful to know if the breaker is in a hot enclosure near a motor or drive.