What this 250 A motor circuit breaker does
The Schneider Electric TeSys GV5PB250S is a 3-pole motor protection circuit breaker rated 250 A line current, with an electronic MicroLogic 2.2 M trip unit. It's built for unit-mount installation in motor control centers or individual enclosures — the lugs on both line and load sides accept AWG 3/0 through 350 kcmil aluminium or copper conductors, so it lands directly on bus bars or cable without an adapter kit. The thermal protection adjustment range spans 114 to 217 A, letting you dial in the overload threshold to match the motor's full-load amps without swapping the breaker body. Phase failure sensitivity is built in — if one phase drops, the trip unit sees the imbalance and opens before single-phasing damages the motor.
Breaking capacity — what the S code means at 600 V
The S breaking capacity code on this GV5PB250S delivers 100 kA at 240 V AC, 65 kA at 480 V AC, and 25 kA at 600 V AC. At 240 V, the 100 kA rating covers nearly any industrial service entrance.
Unit-mount form factor: 7.52 in (191.008 mm) height, 4.12 in (104.65 mm) width, 5 in (127 mm) depth. Lugs require 230.1 lbf·in (26 N·m) torque for AWG 3/0 to 350 kcmil. Ambient operating temperature rated to 104 °F (40 °C).