Schneider Electric Square D B1.03 Thermal Overload Relay with a built-in heater element rated 0.74–0.81 A. This thermal overload device provides overload protection for motor control circuits by sensing heat generated from overcurrent in its heater element and triggering protection at the set point. The verified current rating for activation is 0.74–0.81 A, guiding users to match the relay to the motor’s current profile for reliable protection in electrical panels.
