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The Square D CC68.5 Thermal Unit is designed to safeguard motors, controllers, and branch circuit conductors from excessive heating caused by prolonged motor overcurrents, including locked rotor currents. This unit provides essential protection by tripping on overload conditions within twenty seconds. Using a one-piece construction, the unit allows motor current to flow through a small heater winding. When the unit detects an overload, a special solder melts, enabling a ratchet wheel to disengage, thus opening the control circuit contacts and the motor contacts.
This thermal unit is crucial for protecting motors and related components from damage due to excess current. Ensures reliable operation in various industrial settings.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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