SKU: SENS-3583
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Generic KSD301 Ceramic Temperature Controlled Switch Thermostat - 150°C NC, 250V 16A

₹70.00 (Inclusive of all taxes)
Out of Stock

The KSD301 is a ceramic-bodied, normally closed (NC) thermal switch designed for precise temperature control up to 150°C. It is rated for 250V AC/DC and 16A loads, making it suitable for direct integration into heating elements, power supplies, and industrial equipment for over-temperature protection.

Features

  • Ceramic housing for high thermal stability and electrical insulation
  • Normally Closed (NC) contact configuration opens at setpoint (150°C)
  • High current rating of 16A at 250V for direct load switching
  • Fixed, factory-calibrated actuation temperature of 150°C (±5°C typical)
  • Compact and robust design for reliable operation in demanding environments

Out of stock

Description

The KSD301 is a bimetallic disc thermostat encapsulated in a ceramic shell. When the ambient temperature reaches its calibrated setpoint of 150°C, the bimetallic disc snaps, mechanically opening the normally closed electrical contacts to break the circuit. This provides a simple, reliable, and resettable method for over-temperature protection without requiring external power.

Its ceramic construction offers excellent dielectric strength, thermal endurance, and resistance to arcing, making it ideal for integration into appliances, power tools, transformers, and small industrial heaters where safety and durability are critical. The switch automatically resets once the temperature falls below the hysteresis point, typically 10-20°C below the setpoint.

Key Features

  • Fixed Temperature Actuation: Factory-set to open at 150°C for consistent protection.
  • High-Current Switching: Robust contacts rated for 16A at 250V AC/DC.
  • Ceramic Encapsulation: Provides superior electrical isolation and heat resistance.
  • Normally Closed (NC) Operation: Failsafe design interrupts power upon overheating.
  • Mechanical Resettable Action: Automatically resets when temperature cools.
  • Compact and Durable: Withstands vibration and thermal cycling for long service life.

Applications

  • Over-temperature protection in coffee makers, water heaters, and small appliances.
  • Thermal cutoff safety for transformers, power supplies, and battery chargers.
  • Temperature regulation in soldering irons, 3D printer hotends, and heating pads.
  • Safety interlock in power tools, motors, and industrial control cabinets.

Technical Specifications

Model NumberKSD301
Switch TypeThermostat, Bimetallic Disc
Contact ConfigurationNormally Closed (NC)
Actuation Temperature150 °C
Rated Voltage250 V AC/DC
Rated Current16 A
Housing MaterialCeramic
Operating Temperature RangeUp to 150 °C (Setpoint)
Weight3 g

Frequently Asked Questions

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

Normally Closed (NC) means the electrical contacts are closed, allowing current to flow, at temperatures below the setpoint (150°C). When the surrounding temperature reaches 150°C, the internal bimetallic disc snaps open, breaking the circuit to stop current flow and provide over-temperature protection.

Can I adjust the actuation temperature of the KSD301 switch?

No, the KSD301 is a fixed-temperature thermostat. Its actuation point is factory-calibrated and sealed within the ceramic housing at 150°C and is not user-adjustable. For a different setpoint, you would need a thermostat model calibrated for that specific temperature.

What is the maximum electrical load this switch can handle?

The switch is rated for a maximum of 16 Amperes at 250 Volts AC or DC. This rating is for resistive loads; for inductive loads (like motors), derating or additional protection (e.g., a snubber circuit) may be required to handle inrush currents and prevent contact arcing.

How do I mount and wire the KSD301 thermostat?

Mount the ceramic body securely to the heat source (e.g., a metal surface) using the provided bracket or thermal adhesive to ensure good thermal transfer. Wire it in series with the load (e.g., a heating element) on the live (hot) side of the AC circuit. Ensure wiring complies with local electrical codes for the voltage and current used.

Package Includes

  • 1 x KSD301 Ceramic Temperature Switch (150°C NC, 250V 16A)

Additional Information

Weight 0.03 kg
Dimensions 9 × 3 × 6 cm