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    30/40/50 Amp Thermal Overload Relay, 220V, 3-Phase

    $39.17
    Thermal overload relay provides overcurrent and phase failure protection for AC motors. Current setting range 30-40Amp or 37-50Amp for selection, current rating 93A, working voltage 3-phase 220V~690V, insulation voltage 690V, matching 40A contactor and 63A/100A gG fuse breaker.
    SKU: ATO-TOR-304050
    *
    This product has a minimum quantity of 3
    Free Shipping Worldwide
    Delivery date: 6-12 days

    Good price thermal overload relay for sale, whose main functions are overcurrent and phase failure protection. 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

    Model ATO-JR28-93
    Current Setting Range 23-32 A 30-40 A 37-50 A
    Matching Fuse Breaker 63 gG 100 gG  100 gG
    40 aM 40 aM  63 aM 
    Matching Contactor 40A
    Rated Working Current 93A
    Rated Working Voltage 3-phase 220V~690V
    Rated Insulation Voltage 690V
    Number of Contacts 1NO + 1NC
    Phase Failure Protection Function yes
    Automatic & Manual Reset yes
    Temperature Compensation yes
    Tripping Indicator yes
    Test Pushbutton yes
    Mounting Mode Plug-in, independent
    AC-15 220V Current Rating 2.73A
    AC-15 220V Current Rating 1.58A
    DC-13 220V Current Rating 0.2A
    Cross Section Area of Conductor (mm2) Main Circuit Single core or standard wire 4~35
    Wiring screw M4
    Auxiliary Circuit Single core or standard wire 0.5~2.5
    Wiring screw M3.5

    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)

    Dimension diagram of 30/40/50 Amp Thermal Overload Relay, 220V, 3-Phase

    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.

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