SKU: SENS-3664
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KSD9700/BK05-BB1D Metallic Shell Temperature Control Switch - 90C NC, 10A 250V

₹55.00 (Inclusive of all taxes)
Out of Stock

The KSD9700/BK05-BB1D is a metallic-shell, normally closed (NC) thermal switch rated for 10A at 250V AC/DC, designed to open at 90°C. It provides reliable over-temperature protection for electrical appliances, power tools, and industrial equipment.

Features

  • Metallic shell construction for durability and effective thermal conduction.
  • Normally closed (NC) contact opens at a calibrated setpoint of 90°C (±5°C).
  • High current rating of 10A at 250V AC/DC for robust circuit protection.
  • Compact form factor with integrated 7cm lead wires for easy installation.
  • Bimetallic snap-action mechanism ensures precise and reliable switching.

Out of stock

Description

The KSD9700/BK05-BB1D is a bimetallic thermal cutoff switch housed in a metallic shell for optimal heat transfer and mechanical robustness. Its normally closed contacts remain conductive under normal operating temperatures but snap open when the local temperature reaches the factory-calibrated trip point of 90°C, breaking the circuit to prevent overheating damage.

This switch is designed for direct series connection in the power line of the device it protects. The metallic casing ensures a fast thermal response to ambient conditions, making it suitable for embedding in motors, transformers, power supplies, and heating elements. After tripping, the switch typically remains open until the temperature cools sufficiently below the setpoint, at which point it automatically resets, restoring circuit continuity.

Key Features

  • Bimetallic snap-disc actuator for precise, repeatable temperature response.
  • Rugged metallic housing ensures long-term stability and resistance to physical stress.
  • Automatically resettable design eliminates the need for manual intervention after a fault condition clears.
  • High-breaking capacity suitable for inductive and resistive loads up to the rated 10A.
  • Integrated 7cm insulated wire leads (approx. 22-24 AWG) simplify wiring connections.
  • Optimized performance-to-cost ratio for mass-produced consumer and industrial appliances.
  • Complies with common international safety standards for thermal protectors.

Applications

  • Over-temperature protection in AC motors, transformers, and solenoids.
  • Safety cutoff in power tools, hair dryers, coffee makers, and other small appliances.
  • Thermal management in LED drivers, power supplies, and battery chargers.
  • Embedded protection within heating elements for water heaters and industrial warmers.
  • Preventive safety device in automotive electronics and 12/24V DC systems.

Technical Specifications

Manufacturer Part NumberKSD9700/BK05-BB1D
TypeThermal Cutoff Switch (Thermostat)
Contact ConfigurationNormally Closed (NC)
Trip Temperature90°C (Setpoint)
Rated Voltage250V AC/DC
Rated Current10A
Housing MaterialMetallic Shell
Actuator TypeBimetallic Snap Disc
Lead Wire Length7 cm
Approx. Dimensions (L x W x H)9 x 7 x 1 cm
Approx. Weight0.03 kg

Frequently Asked Questions

What does 'Normally Closed (NC)' mean for this thermal switch?

Normally Closed means the switch's internal contacts are closed, allowing current to flow, under normal temperature conditions. When the temperature at the switch's sensing point reaches its calibrated trip point (90°C), the contacts snap open, breaking the circuit to stop current flow and protect the device.

What is the reset behavior after the KSD9700 switch trips?

This is an automatically resettable bimetallic switch. After it trips open at 90°C, it will remain open while the temperature is above the reset point (typically several degrees below the trip point). Once the temperature cools sufficiently, the bimetallic disc snaps back, closing the contacts and restoring circuit continuity without manual intervention.

Can this switch handle inductive loads like motors?

Yes, the 10A at 250V rating is suitable for switching inductive loads such as small motors, solenoids, and transformers. The metallic shell and robust contact design provide reliable performance and arc suppression for typical appliance and tool applications. For highly inductive loads, consulting the datasheet for specific inrush current capability is recommended.

How should I install and mount this thermal switch?

For accurate temperature sensing, the metallic body of the switch must be in good thermal contact with the component or surface you wish to monitor. Mount it using thermal adhesive, a clamp, or by embedding it directly. Ensure the 7cm wire leads are connected in series with the load you intend to protect, observing correct polarity for DC applications.

Package Includes

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

Additional Information

Weight 0.03 kg
Dimensions 9 × 7 × 1 cm