SKU: SENS-3570
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KSD302 Ceramic Temperature Control Switch Thermostat - 120°C NC, 250V 10A

₹12.00 (Inclusive of all taxes)
Out of Stock

The KSD302 is a ceramic-bodied, normally open (NC) thermal switch designed for precise 120°C temperature control in AC circuits up to 250V/10A. It provides a reliable, snap-action mechanical cutoff for protecting appliances, heaters, and industrial equipment from overheating.

Features

  • Precision 120°C (±5°C) snap-action bimetallic thermostat.
  • Rated for 250V AC / 10A resistive loads for robust circuit protection.
  • Ceramic housing ensures high insulation resistance and thermal stability.
  • Normally Open (NO) contact configuration opens upon reaching setpoint.
  • Compact, screw-terminal design for easy integration into control panels.

Out of stock

Description

The KSD302 thermal switch utilizes a bimetallic disc mechanism housed within a durable ceramic body. When the ambient temperature reaches its calibrated setpoint of 120°C, the disc snaps, mechanically opening the electrical contacts to interrupt the circuit. This provides a failsafe, non-resettable cutoff to prevent overheating damage.

Its ceramic construction offers excellent dielectric strength and resistance to arcing, making it suitable for high-voltage AC applications. The device is designed for direct mounting on heated surfaces or within enclosures requiring reliable thermal protection without complex electronics.

Key Features

  • Bimetallic snap-action mechanism for precise, repeatable temperature tripping.
  • High-temperature ceramic housing for superior electrical insulation and flame retardancy.
  • Rugged screw terminals for secure, high-current wire connections.
  • Designed for automatic reset upon cooling below the setpoint (typical hysteresis ~10°C).
  • Compact and lightweight form factor for space-constrained installations.
  • Optimized performance-to-cost ratio for mass-produced appliance safety.

Applications

  • Over-temperature protection in electric water heaters, coffee makers, and kettles.
  • Thermal cutoff safety in power supplies, transformers, and motor windings.
  • Temperature regulation in industrial soldering equipment and heating plates.
  • Appliance safety compliance for consumer electronics requiring thermal fusing.

Technical Specifications

Model NumberKSD302
Switch TypeNormally Open (NO) / NC (Thermostat Opens on Rise)
Setpoint Temperature120°C
Rated Voltage250V AC
Rated Current10A (Resistive)
Housing MaterialCeramic
Contact ConfigurationSPST (Single Pole, Single Throw)
Approx. Weight3 g

Frequently Asked Questions

What is the operating principle of the KSD302 thermal switch?

The KSD302 uses a bimetallic disc mechanism. Two bonded metals with different thermal expansion rates cause the disc to snap and physically open the electrical contacts when the calibrated temperature (120°C) is reached. It automatically resets once the temperature cools sufficiently below the setpoint.

Can this switch be used with DC voltage or for higher current loads?

It is rated for 250V AC. Using it with DC may cause arcing and premature contact failure due to different arc-quenching properties. The 10A rating is for resistive loads; for inductive loads (motors, solenoids), derating is necessary to handle inrush currents.

How should I mount and wire the KSD302 thermostat?

Mount the ceramic body directly onto the heated surface or component using the provided mounting hole for optimal thermal coupling. Connect the live or load wires securely to the two screw terminals. Ensure the device is not subjected to mechanical stress that could affect its calibration.

Package Includes

  • 1 x KSD302 Ceramic Temperature Control Switch (120°C, 250V 10A)

Additional Information

Weight 0.03 kg
Dimensions 9 × 3 × 6 cm