SKU: SENS-3574
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Generic KSD302 Ceramic Temperature Controlled Switch Thermostat - Normally Open NC, 105°C, 250V 10A

₹12.00 (Inclusive of all taxes)
Out of Stock

The Generic KSD302 is a ceramic-encased, normally open (NO) thermal switch designed for precise temperature control up to 105°C in electrical circuits. It is rated for 250V AC/DC and 10A, making it suitable for integration into appliances, power supplies, and industrial control panels for over-temperature protection.

Features

  • Ceramic housing for high thermal stability and electrical insulation
  • Normally Open (NO) contact configuration switches at 105°C setpoint
  • Rated for 250V AC/DC and 10A switching capacity
  • Compact and robust design for reliable over-temperature protection
  • Direct mechanical switching, requires no external power supply

Out of stock

Description

The KSD302 is a bimetallic disc thermostat housed in a durable ceramic body. The ceramic material provides excellent electrical insulation and thermal conductivity, ensuring accurate and reliable response to ambient temperature changes. When the local temperature reaches the calibrated setpoint of 105°C, the internal bimetallic disc snaps, mechanically opening the normally open (NO) contacts to break the circuit.

This device functions as a single-use, auto-reset thermal protector. Once the temperature drops below the reset point (typically several degrees below the setpoint), the disc returns to its original shape, closing the contacts and restoring the circuit. Its 250V 10A rating makes it suitable for direct control of heaters, motors, transformers, and other AC/DC loads in a wide range of consumer and industrial applications.

Key Features

  • Durable ceramic housing ensures long-term stability and flame retardancy.
  • Precision-calibrated bimetallic disc actuator for accurate temperature response.
  • Normally Open (NO) contact configuration for fail-safe circuit interruption.
  • High current-carrying capacity of 10A at up to 250V AC/DC.
  • Compact and lightweight design for easy integration into tight spaces.
  • Auto-reset functionality restores operation after cooldown without manual intervention.

Applications

  • Over-temperature protection in coffee makers, kettles, and small kitchen appliances.
  • Thermal cutoff for transformers, power supplies, and battery chargers.
  • Safety interlock in HVAC fan motors, pumps, and industrial control cabinets.
  • Temperature regulation in incubators, soldering equipment, and heating elements.

Technical Specifications

Model NumberKSD302
Housing MaterialCeramic
Contact ConfigurationNormally Open (NO)
Setpoint Temperature105 °C
Rated Voltage250 V AC/DC
Rated Current10 A
Switch TypeBimetallic Disc, Auto-Resetting
Approximate Weight3 g

Frequently Asked Questions

What is the operating principle of the KSD302 thermostat?

The KSD302 uses a bimetallic disc housed within a ceramic body. As temperature increases, the two bonded metals expand at different rates, causing the disc to snap and mechanically open the normally open (NO) contacts at the precise 105°C setpoint. It auto-resets when the temperature cools sufficiently.

Can this thermostat switch a DC load, and what are its voltage/current limits?

Yes, it is rated for both AC and DC operation. The absolute maximum ratings are 250 volts and 10 amps. For reliable long-term operation and to prevent contact welding, it is recommended to derate these values, especially for inductive DC loads like motors.

How should I mount and wire the KSD302 thermostat?

Mount the ceramic body directly to the heat source (e.g., a motor housing or heater block) using the provided bracket or thermal adhesive for optimal thermal transfer. Wire the two terminals in series with the load you wish to control. Ensure connections are secure and insulated, respecting the voltage and current limits.

Package Includes

  • 1 x KSD302 Ceramic Temperature Controlled Switch Thermostat

Additional Information

Weight 0.03 kg
Dimensions 9 × 6 × 3 cm