SKU: SENS-3626
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KSD9700/BK05-BB1D Metallic Shell Temperature Control Switch - 75°C NC, 5A 250V

₹13.00 (Inclusive of all taxes)
Out of Stock

The KSD9700/BK05-BB1D is a normally closed (NC) bimetallic thermal switch rated for 5A at 250V AC/DC, designed to open its contacts at a calibrated 75°C setpoint. This metallic-shell protector integrates directly into electrical circuits for over-temperature cutoff in appliances, power supplies, and industrial controls.

Features

  • 75°C Normally Closed (NC) bimetallic snap-action thermal switch
  • Rated for 5A continuous current at 250V AC/DC
  • Durable metallic shell construction for robust thermal conduction and mechanical protection
  • Pre-calibrated, fixed-temperature setpoint for reliable overheat protection
  • Compact design with integrated 7cm lead wires for easy installation

Out of stock

Description

The KSD9700/BK05-BB1D is a bimetallic disc thermostat housed in a metallic shell, providing a reliable and cost-effective solution for over-temperature protection. Its normally closed contacts remain conductive under normal operating conditions but snap open when the local ambient temperature reaches the factory-set 75°C threshold, breaking the circuit to prevent damage.

This switch is designed for direct series connection within a power line, requiring no external power or signal conditioning. The metallic housing ensures fast thermal response and durability in demanding environments. It is ideal for integration into heating elements, transformers, motors, and other electrical equipment where space is constrained and automatic thermal cutoff is required.

Key Features

  • Fixed 75°C (±5°C typical) trip temperature for consistent protection
  • High-current bimetallic snap-action mechanism ensures reliable contact opening/closing
  • Metallic shell provides excellent thermal conductivity and mechanical robustness
  • Pre-wired with 7cm insulated leads for simplified installation
  • Wide voltage rating suitable for both AC and DC control circuits
  • Compact form factor (approx. 9 x 7 x 1 cm) for space-constrained applications
  • Designed for long operational life with minimal maintenance

Applications

  • Over-temperature protection for small motors, transformers, and solenoids
  • Safety cutoff in coffee makers, water heaters, and small household appliances
  • Thermal protection for power supplies, battery chargers, and LED drivers
  • Temperature monitoring and cutoff in industrial control cabinets
  • Integration into DIY electronics projects requiring a simple, reliable thermal fuse

Technical Specifications

Manufacturer Part NumberKSD9700/BK05-BB1D
Switch TypeNormally Closed (NC) Bimetallic Thermostat
Trip Temperature75°C
Rated Voltage250V AC/DC
Rated Current5A
Housing MaterialMetallic Shell
Cable Length7 cm
Operating Temperature RangeUp to trip point (75°C)
Dimensions (L x W x H)Approx. 9 x 7 x 1 cm
WeightApprox. 0.03 kg

Frequently Asked Questions

What does 'Normally Closed (75°C)' mean for this thermal switch?

The switch contacts are closed (conducting) at temperatures below 75°C. When the sensing temperature reaches the calibrated 75°C setpoint, the internal bimetallic disc snaps and physically opens the contacts, breaking the circuit to stop current flow. It resets automatically once the temperature cools sufficiently below the trip point.

What is the maximum current and voltage I can use with this switch?

The switch is rated for a continuous current of 5 Amps at a maximum voltage of 250 Volts, either AC or DC. Do not exceed these ratings to ensure reliable operation and prevent contact welding or failure. It is designed for direct series connection in the power line of the device being protected.

How should I mount and install the KSD9700 switch?

For accurate temperature sensing, the metallic shell of the switch must be in good thermal contact with the component or surface you wish to monitor. Use the provided 7cm leads for connection. Secure the switch body using thermal adhesive, a clip, or by ensuring it is firmly placed against the heat source. Avoid insulating the metal housing.

Package Includes

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

Additional Information

Weight 0.03 kg
Dimensions 9 × 7 × 1 cm