SKU: SENS-3670
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KSD9700/BK05-BB1D Metallic Shell Temperature Control Switch - 60°C NC, 10A 250V

₹55.00 (Inclusive of all taxes)
Out of Stock

The KSD9700/BK05-BB1D is a metallic-shell, snap-action thermal switch designed for reliable over-temperature protection in electrical appliances and industrial equipment. It features a 60°C normally closed (NC) bimetallic contact rated for 10A at 250V AC/DC, providing a robust and cost-effective safety cutoff.

Features

  • Metallic shell construction for durability and effective thermal conduction.
  • Normally closed (NC) bimetallic snap-action switch opens at 60°C (±5°C typical).li>
  • High current rating of 10A at 250V AC/DC for direct load switching.
  • Compact dimensions (4x8x20mm sensing head) with 7cm lead wires for easy integration.
  • Manual reset upon cooling; ideal for appliances, power supplies, and motor protection.

Out of stock

Description

The KSD9700/BK05-BB1D is a bimetallic disc thermal protector housed in a metallic shell for rapid and accurate temperature response. The switch operates on a snap-action principle: when the preset temperature (60°C) is reached, the bimetallic disc deforms, instantly opening the normally closed contacts to break the circuit and prevent overheating.

This device is designed for direct series connection with the load, eliminating the need for external control circuitry. The metallic housing ensures good thermal transfer from the protected component, while the robust contacts are rated for resistive and inductive loads commonly found in heaters, transformers, small motors, and power conversion equipment.

Key Features

  • Bimetallic snap-action mechanism for precise, repeatable trip point.
  • Metallic shell ensures fast thermal response and mechanical robustness.
  • High-breaking-capacity contacts rated for 10A, 250V AC/DC.
  • Normally closed (NC) configuration fails safe (open on over-temperature).
  • Compact form factor with integrated 7cm insulated lead wires.
  • Manual reset function activates once the device cools below the reset temperature.
  • Designed for direct installation on heatsinks, motor housings, or inside enclosures.
  • High-value build for cost-effective thermal protection in volume applications.

Applications

  • Over-temperature cutoff in AC/DC power supplies and battery chargers.
  • Thermal protection for small appliance motors, fans, and pumps.
  • Safety interlock in heating elements for coffee makers, soldering irons, and food warmers.
  • Motor winding and transformer overload protection in industrial control cabinets.
  • Temperature monitoring and cutoff in LED drivers and power conversion modules.

Technical Specifications

Manufacturer Part NumberKSD9700/BK05-BB1D
Switch TypeBimetallic Thermal Protector (Normally Closed)
Trip Temperature60°C
Reset TemperatureApprox. 45-55°C (Manual Reset on Cooling)
Rated Voltage250V AC/DC
Rated Current10A
Contact ConfigurationSPST, Normally Closed (NC)
Housing MaterialMetallic Shell
Sensing Head Dimensions4mm x 8mm x 20mm
Cable Length7 cm
Operating Temperature RangeUp to 60°C (Trip Point)
Mechanical Life>100,000 cycles

Frequently Asked Questions

What is the trip and reset behavior of this KSD9700 thermal switch?

The switch is normally closed (NC) and will open (break the circuit) when its sensing head reaches 60°C. It remains open until the temperature cools below the reset point (typically 45-55°C), at which point it will manually reset and close the contacts again. This cycle repeats with each over-temperature event.

Can this switch be used to directly control a 10A heater or motor?

Yes. The contacts are rated for 10A at 250V AC/DC, making it suitable for direct series connection with loads like heating elements, small motors, or transformers. Ensure your load's inrush and steady-state current do not exceed the 10A rating for reliable operation and contact longevity.

How should I mount the thermal switch for proper operation?

For accurate temperature sensing, the metallic sensing head (4x8x20mm) must be in direct, firm thermal contact with the surface you wish to monitor, such as a motor housing or heatsink. Use thermal adhesive or a mounting clip. The 7cm insulated leads can be soldered or connected via screw terminals into your circuit.

Is this device suitable for 3.3V or 5V logic-level signals?

No. This is a high-current, power-level thermal switch designed for switching AC/DC mains or load voltages up to 250V. It is not a logic-level output sensor. For low-voltage digital temperature sensing, use a thermistor or digital temperature sensor IC (e.g., DS18B20, TMP36) instead.

Package Includes

  • 1 x KSD9700/BK05-BB1D Metallic Shell Temperature Control Switch

Additional Information

Weight 0.03 kg
Dimensions 9 × 7 × 1 cm