SKU: SENS-3644
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KSD9700/BK05-BB1D Metallic Shell Temperature Control Switch - 160°C NC, 5A 250V

₹28.00 (Inclusive of all taxes)
Out of Stock

The KSD9700/BK05-BB1D is a metallic-shell, snap-action thermal switch designed for reliable over-temperature protection in electrical appliances and industrial equipment. It features a normally closed (NC) contact that opens at a fixed 160°C setpoint, rated for 5A at 250V AC/DC.

Features

  • Fixed 160°C (±5°C) normally closed (NC) snap-action thermal switch.
  • Rated for 5A resistive load at 250V AC/DC for robust circuit protection.
  • Durable metallic shell construction for effective heat conduction and mechanical durability.
  • Compact design with integrated 7cm lead wires for straightforward installation.
  • Ideal for over-temperature cut-off in heaters, motors, transformers, and power supplies.

Out of stock

Description

The KSD9700/BK05-BB1D is a bimetallic disc thermostat engineered for precise thermal management. Its operation relies on a snap-action mechanism where a bimetallic disc inside the metallic shell deflects at the calibrated temperature, rapidly opening the normally closed contacts to break the circuit. This provides a failsafe, non-resettable cut-off to prevent overheating damage.

Constructed with a metallic housing, the switch ensures excellent thermal conductivity and response time, allowing it to accurately sense the ambient temperature of the device it’s mounted on. The robust design is suited for environments requiring a simple, reliable, and cost-effective thermal protection solution without the need for electronic control circuitry.

Key Features

  • Fixed Temperature Actuation: Precisely calibrated bimetallic disc opens contacts at 160°C, providing consistent over-temperature protection.
  • Robust Electrical Rating: Handles up to 5A at 250V AC/DC, suitable for protecting motors, heating elements, and transformers.
  • Durable Metallic Housing: Shell provides effective heat transfer, mechanical strength, and resistance to physical stress.
  • Normally Closed Configuration: Circuit remains closed under normal temperatures and opens upon overheating, acting as a safety cut-off.
  • Simple Two-Wire Installation: Comes with 7cm insulated lead wires for direct series connection in the power or control circuit.
  • Compact Form Factor: Small head dimensions (approx. 2mm) allow for installation in space-constrained applications.

Applications

  • Over-temperature protection in household appliances like electric kettles, coffee makers, and hair dryers.
  • Safety cut-off for motors, transformers, and solenoids in industrial control cabinets.
  • Thermal management in power supplies, battery chargers, and LED drivers.
  • Heating element protection in industrial process equipment and soldering stations.

Technical Specifications

Manufacturer Part NumberKSD9700/BK05-BB1D
Item TypeThermal Switch / Thermostat
Contact ConfigurationNormally Closed (NC)
Setpoint Temperature160°C
Rated Voltage250V AC/DC
Rated Current5A (Resistive)
Cable Length7 cm
Head DimensionsApprox. 2.0 x 0.8 x 0.2 mm
Housing MaterialMetallic Shell
Switch ActionSnap-Action, Non-Resettable

Frequently Asked Questions

Is this KSD9700 switch normally open or normally closed?

This KSD9700/BK05-BB1D model is a Normally Closed (NC) thermal switch. The electrical contacts are closed at temperatures below its 160°C setpoint, allowing current to flow. When the sensed temperature reaches 160°C, the internal bimetallic disc snaps and opens the contacts, breaking the circuit to provide over-temperature protection.

What is the maximum current and voltage this thermal switch can handle?

The switch is rated for a maximum of 5 Amps at 250 Volts, either AC or DC. This rating is typically for resistive loads. For inductive loads like motors or solenoids, derating may be necessary to account for inrush currents and arcing. Always ensure your application's maximum operating current does not exceed this rating.

How do I install and wire this temperature control switch?

Installation is straightforward. The switch is a two-wire device designed to be wired in series with the load or power circuit you wish to protect. Mount the metallic sensing head directly onto the component or surface whose temperature you need to monitor (e.g., a motor housing or heatsink) using thermal adhesive or a mechanical clamp for good thermal contact. Connect the two 7cm lead wires to your circuit.

Is the 160°C setpoint fixed, and is the switch resettable?

Yes, the 160°C actuation temperature is a fixed, factory-calibrated setpoint with a typical tolerance of ±3-5°C. This is a non-resettable, one-time-use snap-action switch. Once it trips open at 160°C, it remains open and must be replaced. It is designed as a safety fuse for over-temperature events.

Package Includes

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

Additional Information

Weight 0.03 kg
Dimensions 9 × 7 × 1 cm