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Thermal 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
  • All
  • Same day
  • 9 Day(s) or Less
  1. 1
Brand
Product Series
CAD
Days to Ship
Specifications
Motor Capacity VAC 200–220 Class(kW/A)
Number of Poles
Auxiliary Contact
Representative Standard
Dimension length(mm)
Dimension width(mm)
Dimension thickness(mm)

    Thermal Relay

      Thermal Relay for Mini Contact

      Brand

      MISUMI

      MISUMI

      Product Series

      Thermal Relay

      Thermal Relay for Mini Contact

      CAD
      • 2D
      • 2D
      Days to Ship Same day or more Same day or more
      Specifications
      • CE-Compliant
      • VDE
      • BS
      • IEC
      • UL
      • c-UL
      • CE-Compliant
      • CCC
      • IEC
      • Space-saving
      Motor Capacity VAC 200–220 Class(kW/A)0.05/0.52 ~ 15/55-
      Number of Poles33
      Auxiliary Contact1a1b1a1b
      Representative StandardCECE
      Dimension length(mm)73.2 ~ 80.673.2
      Dimension width(mm)45 ~ 5545
      Dimension thickness(mm)63.7 ~ 10063.7

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      1. 1

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