What the ratings mean for fit
The SENTRON 3VA2063-5JQ32-0HH0 is a 3-pole molded case circuit breaker (MCCB) rated for a continuous current of 63 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling. The adjustable thermal-magnetic trip unit covers a 95 A minimum to 756 A maximum setting range, so it can be tuned to protect a feeder or a large motor branch without swapping the breaker frame. Breaking capacity hits 187 kA at 240 V AC and still delivers 121 kA at 415/440 V, dropping to 75.6 kA at 500 V and 3 kA at 690 V. That 187 kA figure at 240 V means it handles high-fault utility feeds without cascading upstream — a key spec for service-entrance or main-switchboard positions where available fault current is high. The breaker is designed for line protection, meaning its trip curve and accessories are optimized for cable and busbar protection rather than motor overload. It ships with a shunt trip (STL) release and two auxiliary switches plus one trip alarm switch (HQ) — so it can signal its state to a PLC or annunciator panel without an external interposing relay.
Panel integration and mounting
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard SENTRON 3VA frame footprint that fits the same DIN-rail or screw-mount pattern as other 3VA2 breakers. The 86 mm depth is the dimension that matters for enclosure depth clearance; verify your gland plate or back panel leaves at least that much room plus wiring bend radius. The breaker includes a communication function, so it can integrate with a bus system for remote monitoring or trip-event logging.