SKU: SENS-3685
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KSD9700/BK05-BB1D Metallic Shell Temperature Control Switch - 10A 250V, 100°C Normally Closed

₹16.00 (Inclusive of all taxes)
Out of Stock

The KSD9700/BK05-BB1D is a metallic shell, snap-action thermal switch rated for 10A at 250V AC/DC, designed to open (NC) at a calibrated 100°C setpoint. It provides reliable over-temperature protection for motors, transformers, power supplies, and industrial equipment.

Features

  • Metallic shell construction for robust thermal conduction and durability.
  • Normally Closed (NC) contact opens at a precise 100°C (±5°C typical) setpoint.
  • High current rating of 10A at 250V AC/DC for direct circuit protection.
  • Snap-action bimetal disc mechanism ensures fast, reliable switching.
  • Compact design with 7cm lead wires for easy integration into electrical enclosures.

Out of stock

Description

The KSD9700/BK05-BB1D is a bimetallic disc thermostat housed in a metallic shell for optimal thermal response. When the surrounding temperature reaches its calibrated 100°C trip point, the internal snap-action mechanism rapidly opens the Normally Closed (NC) contacts, breaking the circuit to prevent overheating. This automatic reset device closes the contacts again once the temperature drops sufficiently below the setpoint, allowing for cyclic operation.

Engineered for direct series connection in power circuits, its 10A/250V rating eliminates the need for auxiliary relays in many applications. The metallic housing ensures efficient heat transfer from the protected component and offers mechanical robustness in industrial environments, making it suitable for integration into motor windings, transformer coils, battery packs, and heating elements.

Key Features

  • Bimetallic snap-disc thermostat with precise, factory-calibrated temperature setpoint.
  • Rugged metallic shell for excellent thermal conductivity and physical protection.
  • High-current switching capability (10A/250V) for direct load control.
  • Normally Closed (NC) contact configuration opens on temperature rise.
  • Automatic reset function for continuous, maintenance-free protection cycles.
  • Compact form factor with integrated 7cm insulated lead wires for simplified wiring.
  • Designed for reliable operation in demanding electrical and thermal environments.

Applications

  • Over-temperature protection for AC/DC motors, transformers, and solenoids.
  • Safety cut-off in power supplies, battery chargers, and inverters.
  • Thermal management in industrial heating elements and appliance controls.
  • Preventive safety device in audio amplifiers and power electronics enclosures.
  • Embedded protection within lighting ballasts and electrical distribution equipment.

Technical Specifications

Model NumberKSD9700/BK05-BB1D
TypeThermal Switch / Thermostat
Contact ConfigurationNormally Closed (NC)
Setpoint Temperature100°C
Rated Voltage250V AC/DC
Rated Current10A
Housing MaterialMetallic Shell
Cable Length7 cm
Head Dimensions (approx.)2 x 0.8 x 0.2 cm

Frequently Asked Questions

What is the switching action of the KSD9700/BK05-BB1D thermostat?

This is a Normally Closed (NC) bimetallic thermostat. The contacts are closed at temperatures below the 100°C setpoint, allowing current to flow. When the sensed temperature reaches 100°C, the internal snap-disc mechanism rapidly opens the contacts to break the circuit, providing over-temperature protection.

Can this thermal switch handle 10A directly, or do I need a relay?

Yes, the switch is rated for 10A at 250V AC or DC, allowing it to be connected directly in series with the load circuit for many applications. This eliminates the need for an external relay for loads within its current and voltage ratings, simplifying the protection system design.

How do I install and wire this metallic shell temperature switch?

Mount the metallic shell firmly against or inside the component you wish to protect (e.g., motor winding, transformer core) using thermal paste or a clamp for optimal heat transfer. Connect the two lead wires in series with the load or control circuit. Ensure the voltage and current of your application do not exceed the 250V and 10A ratings.

Does the switch reset automatically after tripping?

Yes, this is an automatic reset thermostat. Once the temperature drops sufficiently below the 100°C setpoint (typically by 10-20°C, depending on the hysteresis), the bimetallic disc snaps back, closing the contacts and restoring the circuit. This allows for cyclic operation without manual intervention.

Package Includes

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

Additional Information

Weight 0.03 kg
Dimensions 9 × 7 × 1 cm