SKU: SENS-3614
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Generic KSD301 105°C NC Temperature Control Switch Thermostat - Bakelite, 250V 10A

₹20.00 (Inclusive of all taxes)
Out of Stock

The Generic KSD301 is a bimetallic snap-action thermostat switch rated for 250V AC/DC and 10A loads. This normally closed (NC) thermal switch opens at 105°C, providing automatic over-temperature protection for appliances, power supplies, and heating elements.

Features

  • Bimetallic snap-action switch with a fixed 105°C trip temperature
  • Rated for 250V AC/DC and 10A resistive loads for robust circuit protection
  • Normally Closed (NC) contact configuration opens on temperature rise
  • Bakelite housing provides electrical insulation and thermal stability
  • Compact and lightweight design for easy integration into control panels

Out of stock

Description

The KSD301 thermostat is a mechanical, temperature-activated safety switch. It utilizes a bimetallic disc that snaps and physically opens the electrical contacts when its calibrated temperature (105°C) is exceeded. This action breaks the circuit, providing a fail-safe cut-off for connected heaters or equipment.

Designed for direct series connection within a power line, it requires no external power or signal conditioning. The Bakelite housing ensures high dielectric strength and resistance to tracking, making it suitable for use in electrically noisy environments. Its operation is purely electromechanical, offering high reliability and immunity to voltage spikes.

Key Features

  • Fixed Calibration: Precisely calibrated bimetallic disc triggers at 105°C (±5°C typical).
  • High-Current Switching: Handles up to 10A at 250V AC/DC for direct load control.
  • Fail-Safe NC Design: Normally Closed contacts open upon overheating, interrupting power.
  • Durable Insulation: Bakelite body provides excellent electrical insulation and heat resistance.
  • Long Mechanical Life: Snap-action mechanism ensures clean contact break and extended operational cycles.
  • Compact Form Factor: Small footprint allows installation in space-constrained applications.

Applications

  • Over-temperature protection in coffee makers, water heaters, and small appliances.
  • Thermal cutoff for transformers, power supplies, and battery chargers.
  • Safety interlock in soldering stations and heating element controls.
  • Temperature limiting in 3D printer heated beds and enclosures.
  • Fan control and ventilation system thermal protection.

Technical Specifications

Model NumberKSD301
Switch TypeBimetallic Thermostat (Snap-Action)
Contact ConfigurationNormally Closed (NC)
Trip Temperature105 °C
Rated Voltage250V AC/DC
Rated Current10A (Resistive)
Housing MaterialBakelite
Contact MaterialSilver Alloy
Mechanical Life>100,000 Cycles
Approximate Weight3 g

Frequently Asked Questions

What is the trip temperature and reset behavior of this KSD301 thermostat?

This KSD301 thermostat has a fixed trip temperature of 105°C. It is a snap-action, non-resettable type. Once the bimetallic disc heats up and snaps to open the circuit, it will remain open until the temperature cools significantly below the trip point (typically by 15-25°C), at which point it will automatically snap closed to restore the connection.

Can this switch be used to control a DC load, and what is the maximum current?

Yes, the switch is rated for 250V AC or DC. The maximum resistive load current is 10A. For inductive loads (like motors or solenoids), the rating may be lower, and a snubber circuit is recommended to protect the contacts from arcing and extend their lifespan.

How should I mount and wire the KSD301 thermostat for proper operation?

Mount the thermostat with its metal sensing face in good thermal contact with the heat source (e.g., using thermal paste or a clamp). The two solder or quick-connect terminals are not polarized. Wire it in series with the load (e.g., the heater) on the live (hot) wire. Ensure the Bakelite body does not touch any conductive surfaces to maintain insulation.

Package Includes

  • 1 x KSD301 105°C NC Thermostat Switch

Additional Information

Weight 0.02 kg
Dimensions 9 × 6 × 2 cm