What this MCCB delivers
The Siemens SENTRON 3VA2163-5KP32-0CC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 63 A continuous current (Iu) through the full 40 °C to 50 °C ambient range before any derating kicks in — at 55 °C it still holds 60.6 A, and at 70 °C it's good for 53.6 A. The interrupting capacity is the headline: 187 kA at 240 V AC, 121 kA at 415/440 V, 79 kA at 500 V, and 4.25 kA at 690 V. That 187 kA figure means it can safely clear a fault at the service entrance or in a high-capacity distribution panel without cascading upstream — it's sized for installations where available fault current is extreme.
Trip unit, releases, and auxiliaries
This MCCB ships with the ETU850 electronic overcurrent release — that's the programmable trip unit that gives you adjustable long-time, short-time, instantaneous, and ground-fault protection curves. It also includes an undervoltage release (UVR) as the auxiliary release, which will trip the breaker if control voltage drops below a set threshold — standard for safety circuits where a loss of control power must open the main disconnect. The auxiliary contact block is configured as 2 auxiliary switches (HQ type), and the breaker is communication-capable, meaning it can integrate with a BMS or PLC for remote monitoring and trip indication. There is no voltage trigger or phase failure detection on this variant.
Physical fit and panel integration
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard SENTRON 3VA2 frame size that mounts on a DIN rail or directly to a backplate. The 86 mm depth is the critical dimension for shallow enclosures; verify your gland plate clearance before committing. Power loss is 6.5 W maximum, so ventilation in a sealed cabinet is manageable. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.