SENTRON 3VA2163-5JP46-0AA0 — 63 A MCCB with ETU550 Trip Unit
The Siemens SENTRON 3VA2163-5JP46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 63 A continuous current, fitted with the ETU550 electronic trip unit for line protection duty. It carries a breaking capacity of 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V — high-interrupt ratings that suit it for main feeder or large subfeed applications where fault currents are substantial. The ETU550 provides adjustable overload and short-circuit protection with communication capability, allowing integration into a networked power distribution scheme.
Trip Unit and Protection Profile
The ETU550 electronic trip unit supports adjustable long-time pickup, short-time pickup, instantaneous, and ground-fault protection (though this variant ships without ground-fault monitoring). The 63 A frame is thermally stable across the full operating range: the continuous rating holds at ambient temperatures from 40 °C through 70 °C without derating, which simplifies panel sizing in warm environments. The insulation voltage is rated 800 V, giving headroom for 690 V systems.
Mounting and Physical Fit
The breaker measures 181 mm high, 140 mm wide, and 86 mm deep — a standard SENTRON 3VA2 frame footprint. It mounts via screw terminals onto a backplate or into a compatible SENTRON distribution panel. The front face carries an IP40 protection class, suitable for enclosed panel installation where no water ingress is expected. Operating temperature range is -25 °C to 70 °C; storage range extends from -40 °C to 80 °C.