General Electric SGLL36AT0400 Circuit Breaker

General Electric SGLL36AT0400 is a three-pole, 400-amp circuit breaker (model SGLL36AT0400) used to protect three-phase electrical circuits by interrupting current during overloads or faults. As part of GE's SGLL series, this device is designed for installation in compatible GE distribution panels and equipment where a 3-pole protection device is required. The 400-A rating specifies the maximum continuous current the breaker is designed to carry under normal conditions, with the intent to trip and disconnect the circuit if the current exceeds safe levels. The SGLL36AT0400 designation communicates the exact family and rating, enabling accurate replacement and matching with existing GE components. In three-phase systems, a 3-pole breaker provides coordinated disconnection across all phases to help protect conductors, devices, and wiring insulation from damage due to overcurrent events.