SKU: SENS-3688
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KSD9700 250V 5A 150°C Plastic Thermostatic Temperature Switch NC

₹30.00 (Inclusive of all taxes)
Out of Stock

The KSD9700 is a normally-closed (NC) bimetallic thermostatic switch rated for 250V AC/DC and 5A, with a fixed 150°C actuation temperature. This compact, plastic-housed thermal protector is designed for direct integration into motors, transformers, and appliance circuits for over-temperature cutoff.

Features

  • Fixed 150°C (±5°C) actuation temperature for precise thermal protection.
  • Rated for 250V AC/DC and 5A switching capacity, suitable for direct mains connection.
  • Normally Closed (NC) contact configuration opens on temperature rise.
  • Compact plastic housing with 7cm lead wires for easy installation.
  • Bimetallic snap-action disc ensures reliable, repeatable switching.

Out of stock

Description

The KSD9700 thermostatic switch utilizes a bimetallic disc as its temperature-sensing element. When the ambient temperature reaches the calibrated setpoint (150°C), the disc snaps and mechanically opens the normally closed (NC) electrical contacts, breaking the circuit to protect the connected equipment from overheating.

This switch is designed for direct, in-line installation within electrical assemblies. Its plastic housing provides electrical insulation, while the integrated 7cm wire leads simplify wiring. The device resets automatically once the temperature drops below the setpoint, restoring the circuit connection.

Key Features

  • Bimetallic snap-action mechanism for reliable, latching-free operation.
  • Plastic insulated housing ensures electrical safety and durability.
  • Fixed calibration eliminates the need for user adjustment.
  • Compact form factor (20mm x 7mm x 3.5mm) for space-constrained installations.
  • Pre-soldered 7cm wire leads facilitate quick connection.
  • Designed for high-cycle life in appliance and industrial control applications.

Applications

  • Over-temperature protection for AC motor windings in fans, air conditioners, and pumps.
  • Thermal cutoff in power transformers, chargers, and power supplies.
  • Safety interlock for heating elements in coffee makers, soldering irons, and thermal appliances.
  • Circuit protection in industrial control cabinets and electrical equipment.

Technical Specifications

Model NumberKSD9700 (Variant: KSD9700/BK05-BB1D)
Switch TypeThermostatic, Normally Closed (NC)
Actuation Temperature150°C
Rated Voltage250V AC/DC
Rated Current5A
Contact ConfigurationSPST-NC (Single Pole, Single Throw - Normally Closed)
Housing MaterialPlastic
Cable Length7 cm
Head Dimensions (LxWxH)20 mm x 7 mm x 3.5 mm
Weight3 g

Frequently Asked Questions

What is the contact state of the KSD9700 switch at room temperature?

The KSD9700 is a Normally Closed (NC) switch. At room temperature (below 150°C), the internal contacts are closed, allowing current to flow through the circuit. When the sensing head reaches 150°C, the bimetallic disc snaps and opens the contacts, breaking the circuit to provide over-temperature protection.

Can I adjust the 150°C trip temperature on this switch?

No, the KSD9700 features a fixed, factory-calibrated actuation temperature of 150°C (typically with a tolerance of ±5°C). It is not user-adjustable. For a different setpoint, you would need to select a thermostatic switch model with the corresponding fixed temperature rating.

What are the electrical ratings for wiring this thermal switch?

The switch is rated for 250 Volts AC or DC and a maximum current of 5 Amps. Ensure your circuit voltage and load current do not exceed these ratings. The integrated 7cm wire leads can be spliced or connected to terminal blocks for integration into your appliance or control system.

Package Includes

  • 1 x KSD9700 Thermostatic Temperature Switch

Additional Information

Weight 0.003 kg
Dimensions 2 × 0.7 × 0.35 cm