Good price thermal overload relay for sale, whose main functions are overcurrent and phase failure protection. It is used to provide overload protection open-phase protection and protection against unbalanced current for motors and it can also avoid heating in electrical equipment. Optional current setting range 30-40A or 37-50A, rated current 93A, working power supply 3-phase 220V~690V. Suitable devices are 40A contactor and 63A/100A gG fuse breaker.

Specification

Details

Thermal Overload Relay Applications

• Thermal overload relays are often used in circuit protection, overload, phase failure, overtime start and locked-rotor for AC motors.
• Thermal overload relay has functions of phase failure protection, temperature compensation, adjustable setting current, automatic or manual reset, operation indicator, NP and NO auxiliary contacts separate insulation.
• The thermal overload relay has small installation area and various mounting methods. It has test button and stop button, which is convenient for checking the flexibility of operation.
• The protective cover of thermal overload relay can protect fingers from electric shock. The locking device can prevent misoperation.
• Thermal overload relay comes with remote operation, complete functions and excellent quality.

30/40/50 Amp Thermal Overload Relay Dimension Diagram (Unit: mm)

Tips: Structural characteristics of 30/40/50 Amp thermal overload relay.

• 30/40/50 Amp Thermal overload relay has a current adjustment cam to adjust the setting current.
• Thermal overload relay has a temperature compensation device to ensure that the operating characteristics are basically unchanged within the medium temperature range of -20℃～60℃.
• 30/40/50 Amp Thermal overload relay has a reset adjustment knob to adjust the reset mode. There are two reset states: manual and automatic.
• Thermal overload relay has a tension spring flip and jump mechanism to ensure rapid and reliable contact action.
• 30/40/50 Amp Thermal overload relay has a differential phase failure/three-phase unbalance protection device.
• Thermal overload relay has a detection slider/switch position indicator to simulate the tripping of the thermal relay and display the action status. Through this simulation method, check and ensure that the auxiliary circuit wiring is correct. When the marking on the slider is at the 0 mark, it is displayed as drop out. Located at the l mark, it is displayed as work.
• 30/40/50 Amp Thermal overload relay has a disconnect button. When the disconnect button is pressed, the normally closed contact opens the series contactor to disconnect the load. After releasing the disconnect button, the load will work again through the contactor.