What this MCCB is and what it carries
The 3VA1063-4ED36-0KA0: Rated continuous current Iu is 63 A, and it holds that rating from 40 °C all the way up to 50 °C — no derating needed in a warm enclosure. At 55 °C it's still good for 60.48 A, and at 70 °C it'll carry 56.7 A. That gives you some headroom if the panel runs hot. The interrupting ratings tell you where this breaker can live: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. That's a lot of fault-clearing muscle — it'll handle high available fault currents without the breaker welding shut.
Overcurrent release and accessories
It ships with a TM210 thermal-magnetic overcurrent release — fixed thermal and magnetic trip settings, no electronic adjustment. That's the workhorse release for standard motor and feeder protection where you don't need the fine-tuning of an electronic trip unit. The breaker is fitted with a shunt trip (STL) auxiliary release, order code 3VA9688-0BL33. That means you can remotely trip it from a PLC or emergency-stop circuit — useful when you need to kill power from a control room or safety relay. Rated insulation voltage Ui is 800 V, so it's comfortable on 480 V and 600 V class systems. The front face carries IP40 protection — fine for a closed panel, but keep it away from washdown hoses.
Physical fit and panel integration
Dimensions are 130 mm high, 76.2 mm wide, and 70 mm deep. That's a standard MCCB footprint; it'll bolt into most DIN-rail adapter plates or direct-mount busbar systems without needing a custom bracket. No auxiliary contacts, no communication module, no undervoltage release — this is a straight-line protection breaker. If you need remote status or undervoltage lockout, you'll add those externally.