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Overload Relays

A thermal relay is a type of relay that protects a motor from overcurrent. It is called "thermal relay" because it operates after detecting a rise in the temperature of the motor coil. In some designs, the terminals are equipped with a cover to improve safety by protecting against electric shocks during maintenance or inspection. Most thermal relays are composed of a heater element and bi-metal section. When current flows through the heater element, the bi-metal section bends and the contacts open. If the relay is activated, eliminate the cause before restarting operation. Types include an automatic type that resets automatically after activation, and a manual type where the user resets the relay by pressing a button after the bi-metal has cooled. Because a thermal relay itself does not have a shut-off function, it is usually used in combination with an electromagnetic contactor.
Days to Ship
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  • Same day
  • 5 Day(s) or Less
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  • 14 Day(s) or Less
  • 15 Day(s) or Less
  • 20 Day(s) or Less
  • 44 Day(s) or Less
  • 72 Day(s) or Less
  • 88 Day(s) or Less
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Brand
Product Series
CAD
Days to Ship
Specifications
Operating Method
Motor capacity 400 to 440-VAC class(kW/A)
Motor Capacity VAC 200–220 Class(kW/A)
Coil rated voltage(V)
Number of Poles
Auxiliary Contact
Representative Standard
Dimension length(mm)
Dimension width(mm)
Dimension thickness(mm)

    Overload  Relays TH-T Series

      New SC/NEO SC Series Thermal Relay

        2E Thermal Relay

          Overload Relays TH-N Series

          • On Sale Till 31/03/2026

          Thermal Relay for Mini Contact

          • On Sale Till 31/03/2026

          Thermal Relay

            Overload Relays TH-N220HZ/N400HZ Series

            Brand

            MITSUBISHI

            FUJI ELECTRIC

            FUJI ELECTRIC

            MITSUBISHI

            MISUMI

            MISUMI

            MITSUBISHI

            Product Series

            Overload Relays TH-T Series

            New SC/NEO SC Series Thermal Relay

            2E Thermal Relay

            Overload Relays TH-N Series

            Thermal Relay for Mini Contact

            Thermal Relay

            Overload Relays TH-N220HZ/N400HZ Series

            CAD
            • 2D
            • 2D
            Days to Ship Same day or more 7 Day(s) or more 14 Day(s) or more 5 Day(s) or more Same day or more Same day or more Quote
            Specifications
                    • UL
                    • c-UL
                    • CE-Compliant
                    • CCC
                    • IEC
                    • Space-saving
                    • CE-Compliant
                    • VDE
                    • BS
                    • IEC
                      Operating Method--Other----
                      Motor capacity 400 to 440-VAC class(kW/A)0.1 ~ 22--45/82 ~ 200/330--45/82 ~ 200/330
                      Motor Capacity VAC 200–220 Class(kW/A)0.18 ~ 45--22/82 ~ 110/330-0.05/0.52 ~ 15/5522/82 ~ 110/330
                      Coil rated voltage(V)690--690---
                      Number of Poles-3-3333
                      Auxiliary Contact1a1b1a1b-1a1b1a1b1a1b1a1b
                      Representative StandardCE / CUL / TUV / CCCCE / UL / CUL / TUV / CCC / CSAUL / CSA-CECE-
                      Dimension length(mm)51 ~ 8977 ~ 183-14473.273.2 ~ 80.6144
                      Dimension width(mm)45 ~ 8944 ~ 19745114 ~ 1604545 ~ 55104 ~ 173
                      Dimension thickness(mm)76.5 ~ 8859.5 ~ 182-179 ~ 19363.763.7 ~ 100166.5

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