Schneider Electric (Square D) B4.85 Overload Relay Thermal Unit 3.00-3.42A

The Schneider Electric (Square D) B4.85 Thermal Unit operates as an overload protection component designed to work in motor starters. The pressure range between 3.00 to 3.42 AMPS enables this unit to protect HVAC system motors through its response to excessive current flow. This activates circuit tripping and prevents motor damage by heating up when overload conditions arise. This thermal unit protects system safety and extends when installed in air handling units and compressors and fan motors. The part provides accurate thermal protection which helps minimize system downtime and enables HVAC system operation.