SKU: SENS-3630
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KSD9700/BK05-BB1D Metallic Shell Temperature Control Switch - 65°C NC, 5A 250V

₹20.00 (Inclusive of all taxes)
Out of Stock

The KSD9700/BK05-BB1D is a metallic-shell, snap-action thermal switch rated for 5A at 250V AC/DC, designed to open its normally closed (NC) contacts at a calibrated 65°C. This compact, durable protector integrates directly into circuits for over-temperature safety in appliances, power supplies, and industrial controls.

Features

  • Metallic shell construction for robust thermal conduction and mechanical durability.
  • Normally Closed (NC) contacts open at a precise 65°C (±5°C typical) set point.
  • Rated for 5A continuous current at up to 250V AC/DC for broad circuit compatibility.
  • Compact form factor with integrated 7cm lead wires for easy inline installation.
  • Bimetallic snap-action mechanism ensures reliable, repeatable switching.

Out of stock

Description

The KSD9700/BK05-BB1D is a bimetallic disc-type thermal switch housed in a metallic shell for optimal heat transfer and response. Its normally closed contacts remain conductive under normal operating temperatures but snap open when the sensing surface reaches 65°C, breaking the circuit to prevent overheating in motors, transformers, or heating elements.

This switch is designed for direct solder or screw-terminal integration into control panels, power supplies, and small appliances. The metallic housing ensures a fast thermal response and provides EMI shielding, while the snap-action mechanism offers a clear, audible click for positive contact operation, making it suitable for both safety cutoff and temperature alarm applications.

Key Features

  • Bimetallic snap-disc actuator for precise, repeatable temperature response at 65°C.
  • Rugged metallic shell ensures excellent thermal conductivity and physical protection.
  • Electrical rating: 5A @ 250V AC/DC (resistive load).
  • Normally Closed (NC) contact configuration; opens on temperature rise.
  • Integrated 7cm insulated lead wires (approx. 2 x 0.8mm) for direct wiring.
  • Compact dimensions (approx. 9 x 7 x 1 cm) for space-constrained installations.
  • High-value build for reliable over-temperature protection in cost-sensitive designs.

Applications

  • Over-temperature cutoff protection in AC/DC power supplies and battery chargers.
  • Thermal safety interlock for small appliance motors, transformers, and solenoids.
  • Temperature alarm or shutdown circuit integration in industrial control cabinets.
  • Heat sink or heatsink-mounted protection for power semiconductors and LED drivers.
  • Preventive safety device in DIY electronics projects requiring thermal management.

Technical Specifications

Manufacturer Part NumberKSD9700/BK05-BB1D
Switch TypeThermal Protector, Normally Closed (NC)
Actuation Temperature65°C
Rated Voltage250V AC/DC
Rated Current5A
Contact ConfigurationSPST-NC (Single Pole, Single Throw - Normally Closed)
Housing MaterialMetallic Shell
Cable Length7 cm (approx.)
Lead Wire GaugeApprox. 2 x 0.8 mm
Operating Temperature RangeUp to 65°C (actuation point)
Approx. Dimensions (L x W x H)9 x 7 x 1 cm
Approx. Weight0.03 kg

Frequently Asked Questions

What is the electrical rating and contact configuration of this thermal switch?

The KSD9700/BK05-BB1D is rated for 5 Amps at up to 250 Volts AC or DC. It features a Single Pole, Single Throw, Normally Closed (SPST-NC) contact configuration. This means the circuit is complete under normal conditions and will open (break) when the calibrated temperature of 65°C is reached at the switch's metallic shell.

How do I install and wire this temperature control switch?

Installation requires securing the metallic shell of the switch directly to the heat source (e.g., motor housing, transformer core, heatsink) using thermal adhesive or a mounting clip for optimal thermal transfer. The two integrated 7cm lead wires are then connected in series with the load (e.g., motor, heater) on the live or positive side of the circuit. Ensure the switch's rated current (5A) is not exceeded.

Is this switch suitable for resetting automatically after it trips?

Yes, this bimetallic snap-action switch is an automatic reset type. Once the temperature at the switch drops significantly below the 65°C actuation point (typically by 10-20°C, depending on hysteresis), the bimetallic disc will snap back, closing the contacts and restoring the circuit. This cycle can repeat indefinitely, providing continuous protection.

Package Includes

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

Additional Information

Weight 0.03 kg
Dimensions 9 × 7 × 1 cm