Description
The Schneider Electric (Square D) B40.0 Thermal Overload Relay unit safeguards electric motors in HVAC systems by protecting them from overheating and damage which occurs when current exceeds limits. The part detects temperature increases from overcurrent situations then automatically cuts off motor power. The heating and cooling systems depend on this part to protect motors in air handlers and and pump motors through reliable motor protection. This maintains operation alongside preventing expensive repairs in HVAC systems through its exact temperature detection.
