3-pole MCCB for line protection — 63 A frame with TM240 release
The 187 kA interrupting rating at 240 V is the headline number, but what matters for panel coordination is the full voltage curve: 121 kA at 415 V, 75.6 kA at 440 V, and still 17 kA at 690 V — meaning this breaker stays selective downstream across a wide range of fault levels without cascading upstream. The 63 A rating holds flat from 40 °C up to 50 °C, then derates gradually: 60.48 A at 55 °C, 59.22 A at 60 °C, 57.96 A at 65 °C, and 56.7 A at 70 °C.
Integration — panel fit and auxiliary wiring
This MCCB measures 76.2 mm wide by 130 mm tall by 70 mm deep — a standard 3-pole SENTRON 3VA frame that fits existing DIN-rail or screw-mounted panel layouts without re-drilling. A mechanical trip indicator and a voltage trigger are built in, giving the maintenance tech a clear visual and electrical signal when the breaker has opened on fault. That gives three separate signal paths: two for status feedback (open/closed) and one dedicated to the trip event.