KSD9700/BK05-BB1D Metallic Shell Temperature Control Switch - 110°C NC, 5A 250V

Name: KSD9700/BK05-BB1D Metallic Shell Temperature Control Switch - 110°C NC, 5A 250V
Brand: Generic
SKU: SENS-3658
Price: 45.00 INR
Availability: OutOfStock

₹45.00 (Inclusive of all taxes)

Out of Stock

The KSD9700/BK05-BB1D is a metallic shell, normally closed (NC) thermal switch rated for 5A at 250V AC/DC, with a fixed 110°C trip point. It provides reliable over-temperature protection for motors, transformers, power supplies, and other electrical equipment.

Features

Fixed 110°C normally closed (NC) bimetallic snap-action switch
Rated for 5A resistive load at 250V AC/DC
Metallic shell construction for durability and heat conduction
7cm lead wires for easy electrical connection
Compact size for integration into appliances and power devices

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Description

The KSD9700/BK05-BB1D is a bimetallic disc thermostat housed in a metallic shell. It operates as a normally closed (NC) switch, opening the circuit when the surrounding temperature reaches its calibrated 110°C set point to prevent overheating. Upon cooling below the reset temperature, the switch automatically closes to resume normal operation.

This thermal protector is designed for direct series connection in the power line of the device it is safeguarding. Its metallic housing ensures rapid thermal response and robust physical protection, making it suitable for integration into demanding electrical environments such as motor windings, transformer coils, and power conversion units.

Key Features

Bimetallic Snap-Action Mechanism: Provides precise and reliable switching at the calibrated temperature with a clear open/close action.
Robust Metallic Housing: Ensures excellent thermal conductivity for accurate sensing and offers mechanical durability.
Fixed Calibration: Factory-set to trip at 110°C (± tolerance), eliminating the need for user adjustment.
Automatic Reset: Returns to the normally closed state once the temperature drops below the trip point, enabling unattended operation.
Direct Power Line Integration: Rated for 5A at 250V, allowing it to be wired directly into the main circuit without additional relays for many applications.
Compact Form Factor: Small dimensions facilitate installation in space-constrained locations within appliances and electronic enclosures.

Applications

Over-temperature protection for AC/DC motors and fan coils.
Thermal cutoff safety in power supplies, battery chargers, and transformers.
Temperature monitoring and safety interlock in small household appliances (e.g., coffee makers, rice cookers).
Heating element protection in industrial equipment and soldering stations.
General-purpose thermal safety switch in electronic enclosures and control cabinets.

Technical Specifications

Model Number	KSD9700/BK05-BB1D
Switch Type	Normally Closed (NC), Bimetallic
Rated Voltage	250V AC/DC
Rated Current	5A (Resistive)
Operating Temperature (Trip Point)	110°C
Housing Material	Metallic Shell
Cable Length	7 cm
Head Dimensions	2 x 0.8 x 0.2 mm

Frequently Asked Questions

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

This is a normally closed (NC) bimetallic switch. The circuit is closed at temperatures below 110°C. When the sensed temperature reaches the 110°C set point, the internal bimetallic disc snaps open, breaking the circuit to cut off power and provide protection.

What is the maximum electrical load this switch can handle?

The switch is rated for a maximum of 5 Amps at 250 Volts, either AC or DC, for resistive loads. For inductive loads (like motors), derating is recommended to ensure longevity and reliable switching under arc conditions.

How do I install and wire this temperature control switch?

Install the switch with its metallic shell in direct thermal contact with the component you wish to protect (e.g., motor housing, transformer core). Connect the two lead wires in series with the live wire of the power line feeding the device. Ensure the connections are secure and insulated.

Does the switch reset automatically after tripping?

Yes, this is an automatic reset thermostat. Once the temperature at the switch location cools down below the trip point (typically several degrees below 110°C), the bimetallic disc will snap back to its original position, closing the circuit and restoring power automatically.