SKU: SENS-3538
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Generic Ceramics KSD302 130°C NC Thermostat Switch - 250V 16A Ceramic

₹32.00 (Inclusive of all taxes)
Out of Stock

The Ceramics KSD302 is a normally closed (NC) thermal switch designed to open at 130°C, providing automatic over-temperature protection for appliances and equipment rated up to 250V AC and 16A. Its ceramic housing ensures electrical insulation and thermal stability for reliable operation.

Features

  • Normally Closed (NC) snap-action thermal switch opens at 130°C (194°F)
  • Rated for 250V AC / 16A loads for direct control of heating elements and motors
  • Ceramic housing provides high dielectric strength and thermal durability
  • Bimetallic disc actuator ensures precise, repeatable trip point
  • Compact form factor for easy integration into appliances and control panels

Out of stock

Description

The KSD302 is a bimetallic disc thermostat where a temperature-sensitive metal disc snaps from a closed to an open position upon reaching its calibrated setpoint of 130°C. This normally closed configuration is ideal for safety cut-off applications, interrupting power to a circuit when an over-temperature condition is detected to prevent damage or fire hazard.

Constructed with a ceramic body, the switch offers excellent electrical insulation and resistance to thermal shock, making it suitable for high-temperature environments common in appliances like coffee makers, water heaters, and power supplies. The robust contacts are rated for 16A at 250V AC, allowing it to switch significant loads directly without requiring an external relay in many designs.

Key Features

  • Precision bimetallic snap-action mechanism for reliable trip at 130°C
  • High-current ceramic switch rated for 250V AC / 16A resistive loads
  • Normally Closed (NC) contact configuration for fail-safe temperature protection
  • Durable ceramic housing ensures electrical isolation and heat resistance
  • Fixed, factory-calibrated setpoint eliminates the need for user adjustment
  • Compact and mechanically robust design for direct PCB or chassis mounting
  • Optimized performance-to-cost ratio for volume appliance manufacturing

Applications

  • Over-temperature protection in electric kettles, coffee makers, and small kitchen appliances
  • Thermal cut-off safety in power supplies, battery chargers, and transformer units
  • Temperature regulation in water heaters, soldering irons, and heating pad controls
  • Motor protection in fans, pumps, and compressors subject to overheating
  • Safety interlock in industrial control cabinets and electrical enclosures

Technical Specifications

Model NumberKSD302
Switch TypeNormally Closed (NC)
Trip Temperature130°C (194°F)
Voltage Rating250V AC
Current Rating16A
Contact ConfigurationSPST-NC (Single Pole, Single Throw, Normally Closed)
Housing MaterialCeramic
Actuator TypeBimetallic Disc
Reset TypeAutomatic (upon cooling below trip point)
Terminal TypeQuick-Connect / Solder Lug (typical)

Frequently Asked Questions

What does Normally Closed (NC) mean for this thermostat?

Normally Closed (NC) means the switch's internal contacts are closed, allowing current to flow, at temperatures below its 130°C setpoint. When the temperature rises to 130°C, the bimetallic disc snaps open, breaking the circuit to cut power to the connected load, providing automatic over-temperature protection.

Can this KSD302 switch control a 120V AC heating element directly?

Yes. The switch is rated for 250V AC and 16A, which exceeds common 120V AC appliance requirements. It can directly interrupt the power line to a heating element, motor, or other load within its current rating, acting as both sensor and switch without an external relay.

How do I reset the switch after it trips?

The KSD302 features an automatic reset. Once the ambient temperature around the switch cools down below its trip point (typically a few degrees below 130°C), the bimetallic disc will snap back to its original closed position, restoring the circuit. No manual intervention is required.

What is the advantage of the ceramic housing?

The ceramic housing provides excellent electrical insulation, preventing short circuits even at high voltages. It also offers high thermal durability and resistance to cracking under rapid temperature changes (thermal shock), making it reliable in the fluctuating heat environments of appliances.

Package Includes

  • 1 x Ceramics KSD302 130°C NC Thermostat Switch

Additional Information

Weight 0.02 kg
Dimensions 11 × 5 × 2 cm