SKU: SENS-3668
📋 GST Invoice Available

KSD9700/BK05-BB1D Metallic Shell Temperature Control Switch - 70°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 rated for 10A at 250V AC/DC, designed to open a circuit upon reaching its 70°C (normally closed) set point. It provides reliable over-temperature protection for motors, transformers, and power supplies in industrial and consumer electronics.

Features

  • Metallic shell construction for robust thermal conduction and durability.
  • 10A @ 250V AC/DC switching capacity for direct control of moderate loads.
  • Fixed 70°C (158°F) trip temperature with normally closed (NC) operation.
  • Compact form factor with integrated 7cm lead wires for simplified installation.
  • Bimetallic snap-action mechanism ensures reliable, repeatable switching.

Out of stock

Description

The KSD9700/BK05-BB1D is a bimetallic disc-type thermal protector housed in a metallic shell for efficient heat transfer and mechanical strength. Its snap-action mechanism provides a positive, quick-break contact operation at the calibrated 70°C set point, disconnecting the circuit to prevent component damage from overheating. The switch resets automatically once the temperature drops below the trip point, allowing for autonomous system protection.

Designed for direct series connection within a circuit, this switch is suitable for a wide range of AC and DC applications up to 250V. Its normally closed configuration makes it ideal for fail-safe protection, where an open circuit upon over-temperature is required. The integrated 7cm insulated leads facilitate straightforward wiring into existing systems without additional connectors.

Key Features

  • Bimetallic snap-disc actuator for precise and repeatable temperature response.
  • Metallic housing ensures fast thermal response and robust physical protection.
  • High-current capacity (10A) allows direct switching without a relay in many applications.
  • Broad voltage rating (250V AC/DC) compatible with common line and industrial voltages.
  • Fixed, factory-calibrated set point eliminates the need for user adjustment.
  • Normally closed (NC) contact configuration for fail-safe circuit interruption.
  • Compact and sealed design resists contamination in demanding environments.
  • Integrated wire leads simplify installation and reduce assembly time.

Applications

  • Over-temperature protection for AC motors, transformers, and solenoids.
  • Thermal cutoff in power supplies, battery chargers, and inverters.
  • Safety interlock in heating appliances, coffee makers, and water dispensers.
  • Component protection in industrial control cabinets and power distribution units.
  • Temperature monitoring in automotive auxiliary fans and electronic control units (ECUs).

Technical Specifications

Manufacturer Part NumberKSD9700/BK05-BB1D
Switch TypeThermal Protector / Thermostat
Contact ConfigurationNormally Closed (NC)
Rated Voltage250V AC/DC
Rated Current10A
Operating (Trip) Temperature70°C (158°F)
Reset TemperatureApprox. 55-65°C (Typical differential)
Actuator TypeBimetallic Snap Disc
Housing MaterialMetallic Shell
Cable / Lead Length7 cm
Head Dimensions (approx.)2 mm x 0.8 mm x 0.2 mm

Frequently Asked Questions

What is the reset behavior of this KSD9700 thermal switch?

This is an automatic reset bimetallic switch. Once the temperature rises to the 70°C set point, the contacts snap open (breaking the circuit). The contacts will automatically re-close, restoring the circuit, when the temperature cools to approximately 55-65°C, depending on the specific model's differential. This cycle repeats without manual intervention.

Can this switch be used to directly control a 120V AC heater?

Yes, provided the heater's current draw does not exceed the switch's 10A rating. At 120V AC, a 10A load corresponds to 1200W. This switch is rated for 250V AC/DC, making it suitable for direct series connection with 120V AC heating elements, motors, or solenoids within its current limit, offering a compact protection solution without an external relay.

How should I mount the KSD9700 switch for accurate temperature sensing?

For optimal thermal response, the metallic shell of the switch must be in direct, firm physical contact with the component or surface you wish to monitor. Use a thermal adhesive, clamp, or mounting bracket to ensure good thermal conductivity. Avoid insulating the shell, and keep the bimetallic disc head (the small protrusion) free from obstruction to allow ambient air to affect the reset cycle.

Is this switch suitable for DC voltage applications?

Yes, the KSD9700/BK05-BB1D is rated for 250V DC as well as 250V AC. The 10A current rating applies to both AC and DC loads. This makes it applicable for over-temperature protection in DC power circuits, battery packs, automotive accessories, and renewable energy systems where DC voltage is present.

Package Includes

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

Additional Information

Weight 0.03 kg
Dimensions 9 × 7 × 1 cm