Allen-Bradley W43 Overload Heater Element

Allen-Bradley W43 Overload Heater Element is a replaceable thermal heater component designed for Allen-Bradley W43 overload protection assemblies. This heater element functions as the heat-sensitive sensor within the motor protection circuit, enabling the overload relay to detect temperature rise and trip to safeguard motors. Built specifically to support the W43 configuration, it provides a targeted replacement option that helps restore the original thermal protection behavior without replacing the entire relay package. This part is used in industrial motor protection systems that rely on Allen-Bradley thermal overload devices, helping maintain consistent protection for motors operating under demanding or variable loads. As a dedicated replacement element, it preserves the established response characteristics of the W43 overload assembly, ensuring reliable protection in applications where motor overheating is a critical concern. This replacement part is intended for repair scenarios where the original heater element has degraded performance or failed, allowing technicians to restore the protective function without altering surrounding circuitry. Because it is purpose-built for the W43 configuration, it helps maintain alignment with the relay’s established response characteristics in motor protection schemes.