The ABB 1SDA037512R1 is a shunt trip release for S3 and S5 molded-case circuit breakers, rated 480VAC/250VDC. It provides remote tripping capability for the breaker, allowing a control signal to open the main contacts from a pushbutton, relay, or safety circuit. The shunt trip coil is energized to mechanically unlatch the breaker mechanism; the coil is rated for continuous duty at the listed voltage, so it can be held energized without overheating.
Installation Context
The shunt trip mounts inside the S3 or S5 breaker accessory compartment, wired to a control voltage source. The 480VAC/250VDC rating covers both common line-voltage control schemes and DC control panels. Verify the coil inrush current against the control relay or PLC output driving it — the datasheet provides the VA/W draw for sizing.