SKU: SENS-3683
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KSD9700/BK05-BB1D Metallic Shell Temperature Control Switch - 110C NC, 10A 250V

₹20.00 (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. It operates as a normally closed (NC) circuit breaker, opening at a fixed 110°C set point to protect electrical equipment from overheating in appliances, power tools, and industrial controls.

Features

  • Fixed 110°C (230°F) snap-action thermal trip point, normally closed (NC) configuration.
  • High-current 10A switching capacity at 250V AC/DC for robust circuit protection.
  • Durable metallic shell construction for effective heat transfer and mechanical durability.
  • Compact design with integrated 7cm lead wires for straightforward series installation.
  • Reliable bimetallic disc actuator ensures repeatable operation and long service life.

Out of stock

Description

The KSD9700/BK05-BB1D is a bimetallic disc thermal cutoff switch housed in a metallic shell. It functions as a non-resettable, one-shot thermal fuse in a normally closed configuration. When the ambient temperature surrounding its shell reaches the calibrated 110°C set point, the internal bimetallic disc snaps open, permanently breaking the electrical circuit to prevent overheating damage in the protected device.

Designed for direct series connection within a power line, its 10A/250V rating makes it suitable for monitoring transformers, motors, solenoids, and heating elements. The metal casing ensures rapid thermal response and robust physical protection, while the 7cm insulated leads facilitate secure wiring into control panels or appliance chassis.

Key Features

  • Fixed Temperature Protection: Precisely calibrated bimetallic actuator trips at 110°C (±5°C typical) to provide reliable over-temperature cutoff.
  • High-Current Switching: Rated for 10 Amperes at 250 Volts AC or DC, suitable for protecting mains-powered equipment.
  • Robust Metallic Housing: Shell construction offers excellent thermal conductivity for accurate sensing and enhanced mechanical strength.
  • Normally Closed (NC) Operation: Circuit is closed under normal temperatures and opens permanently upon overheating, acting as a safety fuse.
  • Compact & Easy to Install: Small form factor with pre-attached 7cm wire leads allows for simple in-line installation within confined spaces.
  • Long-Term Reliability: Sealed design protects the bimetallic element from dust and contamination, ensuring consistent performance.

Applications

  • Over-temperature protection in AC/DC power supplies, battery chargers, and transformers.
  • Thermal safety cutoff for electric motors, solenoids, and industrial control cabinets.
  • Heating element protection in coffee makers, soldering irons, and small appliances.
  • Preventive safety device in power tools, lighting ballasts, and automotive electronics.

Technical Specifications

Model NumberKSD9700/BK05-BB1D
FunctionTemperature Control Switch / Thermal Cutoff
Contact ConfigurationNormally Closed (NC)
Trip Temperature110°C
Rated Voltage250V AC/DC
Rated Current10A
Cable Length7 cm
Head Dimensions2.0 x 0.8 x 0.2 mm (Sensor Head)
Housing MaterialMetallic Shell
Operation TypeSnap-Action, Non-Resettable

Frequently Asked Questions

Is this KSD9700 thermal switch resettable?

No, the KSD9700/BK05-BB1D is a non-resettable, one-shot thermal cutoff switch. It uses a bimetallic disc that snaps open permanently at its 110°C set point. Once tripped, the device must be replaced to restore circuit continuity, making it a fuse-like safety component.

What is the difference between Normally Closed (NC) and Normally Open (NO) in a thermal switch?

A Normally Closed (NC) thermal switch, like this KSD9700 model, maintains a closed circuit under normal operating temperatures and opens the circuit when the temperature exceeds its set point (110°C). A Normally Open (NO) switch does the opposite—it remains open under normal conditions and closes upon overheating. The NC configuration is standard for series-connected over-temperature protection.

Can this switch handle 250V AC and DC current?

Yes, the switch is rated for 250 Volts AC/DC and a current load of up to 10 Amperes. This rating applies to both alternating current (AC) and direct current (DC) applications, making it versatile for protecting various types of electrical equipment, from mains-powered appliances to DC motor circuits.

How should I install this thermal cutoff switch?

Install the switch in series with the load (e.g., a heating element or motor) you intend to protect. Ensure its metallic shell is in good thermal contact with the component or area whose temperature you need to monitor. The 7cm wire leads can be spliced or connected to your circuit. The device is non-polarized, so either lead can be connected to the power source or load.

Package Includes

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

Additional Information

Weight 0.03 kg
Dimensions 9 × 7 × 1 cm