SKU: SENS-3540
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Generic Ceramics KSD302 110°C NC Thermostat Switch - 250V 16A Ceramic Body

₹16.00 (Inclusive of all taxes)
Out of Stock

The Ceramics KSD302 is a normally closed (NC) thermal cut-off switch rated for 110°C, designed for inline temperature protection in appliances and heating systems. It features a ceramic housing for electrical insulation and heat resistance, handling up to 16A at 250V AC for reliable over-temperature cutoff.

Features

  • Normally Closed (NC) snap-action bimetallic thermostat rated for 110°C (±5°C typical) trip point.
  • High-current ceramic body switch rated for 16A at 250V AC, suitable for direct load switching.
  • Robust ceramic housing provides excellent electrical insulation and thermal stability.
  • SPST (Single-Pole, Single-Throw) configuration for simple series circuit integration.
  • Compact form factor for easy mounting within appliances, heaters, or control panels.

Out of stock

Description

The KSD302 is a bimetallic disc thermostat housed in a ceramic shell, providing a cost-effective and reliable solution for over-temperature protection. When the ambient temperature reaches its calibrated setpoint (110°C), the bimetallic disc snaps, mechanically opening the normally closed contacts to break the circuit and prevent overheating. This action is non-latching; the switch automatically resets once the temperature cools below the trip point.

Its ceramic construction offers superior dielectric strength and flame retardancy compared to plastic housings, making it suitable for high-temperature environments near heating elements or in power supplies. The device is designed for direct series connection with the load, eliminating the need for auxiliary control circuitry in many applications.

Key Features

  • Bimetallic snap-action mechanism ensures quick, positive contact separation at the set temperature.
  • Ceramic housing provides high dielectric strength, flame resistance, and long-term thermal stability.
  • Rated for 16A resistive load at 250V AC, enabling direct control of heaters, motors, or transformers.
  • Normally Closed (NC) configuration is ideal for fail-safe over-temperature cutoff circuits.
  • Compact and robust design with solder or quick-connect terminals for easy installation.
  • Wide operating temperature range suitable for appliance bases, power tools, and industrial equipment.
  • Optimized performance-to-cost ratio for high-volume thermal protection applications.

Applications

  • Over-temperature protection in electric water heaters, coffee makers, and kitchen appliances.
  • Thermal cutoff safety switch in power tools, transformers, and battery chargers.
  • Temperature control in incubators, soldering stations, and small heating elements.
  • Safety interlock in industrial control cabinets and motor protection circuits.

Technical Specifications

Model NumberKSD302
Switch TypeNormally Closed (NC), SPST
Setpoint (Trip) Temperature110°C
Current Rating16A
Voltage Rating250V AC
Housing MaterialCeramic
Contact ConfigurationSingle-Pole, Single-Throw (SPST)
Action TypeBimetallic Snap-Disc, Automatic Reset
Terminal TypeSolder/Quick-Connect Lugs

Frequently Asked Questions

What is the reset behavior of this KSD302 thermostat?

The KSD302 features an automatic reset mechanism. Once the ambient temperature cools below its 110°C trip point (typically by 15-20°C), the bimetallic disc snaps back, closing the contacts again. This cycle repeats automatically, making it suitable for protective circuits that do not require manual intervention.

Can this switch be used to directly control a 1500W heating element?

Yes. At 250V AC, a 1500W heating element draws approximately 6A (1500W / 250V = 6A). This is well within the switch's 16A resistive rating. The switch is designed for direct series connection with such loads, acting as both sensor and cutoff device without an external relay.

How should I mount and wire the KSD302 thermostat?

Mount the ceramic body securely to the surface or component whose temperature you need to monitor, using the provided mounting holes or adhesive. Ensure good thermal contact. Wire it in series with the load (e.g., heater) using its solder lugs or quick-connect terminals. The switch breaks the live (hot) wire when temperature exceeds 110°C.

What is the typical tolerance on the 110°C trip temperature?

Standard bimetallic thermostats like the KSD302 typically have a tolerance of ±5°C around the setpoint. Therefore, the actual trip temperature can range from approximately 105°C to 115°C. This is suitable for most protection applications where precise control is not critical.

Package Includes

  • 1 x Ceramic KSD302 110°C NC Thermostat Switch

Additional Information

Weight 0.02 kg
Dimensions 11 × 7 × 2 cm