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    MOTOR ACCESSORY

    Thermistors for Electric Motors

    Our thermistors offer precise, responsive temperature sensing for electric motors and control systems. Built for long-term reliability and quick reaction to thermal changes, they’re trusted across industrial, commercial, and HVAC environments.

    For layered motor protection, pair these with our RTD sensors or Microtherms thermostats. Explore our full motor accessories collection for complementary products.

    Key Features:

    • Reliable Performance: Monitors motor temperature to prevent overheating and protect components.
    • High Sensitivity: Fast response to temperature changes for real-time protection.
    • Wide Selection: Available in multiple resistance values, sizes, and tolerance classes to suit a variety of motors.
    • Temperature Options: Available thermistors include 70°C, 90°C, 100°C, 110°C, 120°C, 130°C, 140°C, 145°C, 150°C, 155°C, 160°C, 170°C, and 180°C to match your application requirements.
    • Durable Design: Withstands industrial conditions and continuous operation.
    • Easy Integration: Compatible with most electric motor systems and control panels.
    • Standardised Values: Nominal resistance of 1000 ohms at the reference temperature with precise thermal coefficients.

    Applications:

    • Electric motor thermal protection
    • HVAC and refrigeration systems
    • Industrial automation and controls
    • Temperature sensing in power tools, generators, and battery systems
    • Embedded electronics requiring temperature monitoring
    See Thermistor Specs Below

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    Thermistor Temperature Ratings

    Description Class Colour Code
    70° - 3 Bead Thermistor Y White/Brown
    90° - 3 Bead Thermistor Y Green/Green
    100° - 3 Bead Thermistor A Red/Red
    110° - 3 Bead Thermistor A Brown/Brown
    120° - 3 Bead Thermistor E Grey/Grey
    130° - 3 Bead Thermistor B Blue/Blue
    140° - 3 Bead Thermistor B Blue/White
    145° - 3 Bead Thermistor B Black/White
    150° - 3 Bead Thermistor F Black/Black
    155° - 3 Bead Thermistor F Black/Blue
    160° - 3 Bead Thermistor H Blue/Red
    170° - 3 Bead Thermistor H Green/White
    180° - 3 Bead Thermistor H White/Red

    Complete Your Motor Protection System

    Complete your motor protection system with these commonly used accessories for monitoring, starting, protecting and insulating electric motors.

    Product Best For Typical Use Protects Against / Solves
    Electronic motor start switches for single phase motors
    Motor Start Switches View products →
    Starting single-phase motors Compressors, pumps, machinery Hard starting, locked rotor, thermal overload
    RTD sensors for electric motor temperature monitoring
    RTD Sensors View products →
    Accurate temperature monitoring Large motors, monitoring systems Overheating, temperature monitoring
    Microtherms for compact motor thermal protection
    Microtherms View products →
    Thermal cut-out protection Small motors & appliances Overheating, thermal damage
    Anti-condensation heater tapes for electric motors
    Anti-Condensation Heater Tapes View products →
    Prevent moisture damage Idle motors & switchboards Moisture, corrosion, insulation failure
    Terminal blocks for motors and industrial wiring
    Terminal Blocks View products →
    Electrical connections Motor terminals, control panels Loose connections, arcing
    Electrical insulators for motors and switchgear
    Electrical Insulators View products →
    Mechanical & electrical isolation Motors, switchgear Electrical tracking, insulation breakdown