KSD9700/BK05-BB1D Metallic Shell Temperature Control Switch - 5A 250V, 105C Normally Open

Name: KSD9700/BK05-BB1D Metallic Shell Temperature Control Switch - 5A 250V, 105C Normally Open
Brand: Generic
SKU: SENS-3549
Price: 67.00 INR
Availability: OutOfStock

₹67.00 (Inclusive of all taxes)

Out of Stock

The KSD9700/BK05-BB1D is a metallic-shell, snap-action thermal switch rated for 5A at 250V AC. This normally open (NO) device opens its contacts at 105°C, providing reliable over-temperature protection for motors, transformers, and power supplies.

Features

Metallic shell construction for durability and effective thermal conduction.
Normally Open (NO) snap-action switch opens at the rated 105°C temperature.
Rated for 5A at 250V AC, suitable for direct control of small loads.
Compact dimensions (11 x 8 x 1 cm) for easy integration into enclosures.
Designed for reliable over-temperature protection in electrical devices.

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Description

The KSD9700/BK05-BB1D is a bimetallic disc-type thermal switch housed in a metallic shell. When the surrounding temperature reaches its calibrated setpoint of 105°C, the internal bimetallic element snaps, mechanically opening the normally closed contacts to interrupt the circuit. This provides a fail-safe method of cutting power to prevent overheating damage.

Its robust metallic housing ensures efficient heat transfer from the protected component to the sensing element and offers mechanical protection. The switch is designed for direct series connection with the load, making it a simple and cost-effective solution for over-temperature protection in a wide range of AC-powered equipment.

Key Features

Bimetallic snap-action mechanism for precise and reliable trip point.
Metallic housing provides excellent thermal conductivity and physical durability.
Normally Open (NO) configuration opens circuit upon temperature exceedance.
Direct load switching capability up to 5A at 250V AC.
Fixed, factory-calibrated temperature setpoint of 105°C.
Simple two-terminal design for straightforward series wiring.
Compact form factor facilitates installation in tight spaces.

Applications

Over-temperature protection for AC motors, transformers, and solenoids.
Thermal cutoff in power supplies, battery chargers, and small appliances.
Safety interlock in heating elements and industrial control cabinets.
Temperature monitoring in lighting fixtures and electronic enclosures.

Technical Specifications

Manufacturer Part Number	KSD9700/BK05-BB1D
Switch Type	Normally Open (NO)
Trip Temperature	105°C
Maximum Current Rating	5A
Maximum Voltage Rating	250V AC
Housing Material	Metallic Shell
Actuation Principle	Bimetallic Snap Disc
Dimensions (L x W x H)	110 mm x 80 mm x 10 mm
Weight (Approx.)	0.005 kg

Frequently Asked Questions

What is the trip temperature and reset behavior of this KSD9700 switch?

The KSD9700/BK05-BB1D has a fixed trip temperature of 105°C. It is a snap-action bimetallic switch; when the temperature rises to 105°C, the contacts open. The contacts will automatically re-close once the temperature cools down sufficiently below the trip point, typically by 10-20°C, restoring the circuit.

Can this thermal switch directly control a load, or do I need a relay?

Yes, this switch is rated to directly control loads up to 5 Amperes at 250 Volts AC. You can wire it in series with the load and power source. For loads exceeding its current rating, you must use it to control the coil of a suitably rated relay or contactor.

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

For optimal thermal response, mount the metallic shell of the switch directly against the surface of the component you wish to protect (e.g., motor housing, transformer core). Use a thermal compound or ensure good mechanical contact to minimize thermal lag. Secure it with the provided mounting hole or a clamp.