SKU: SENS-3629
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KSD9700/BK05-BB1D Metallic Shell Temperature Control Switch 65C Normally Open - 5A 250V

â‚č49.00 (Inclusive of all taxes)
Out of Stock

The KSD9700/BK05-BB1D is a metallic-shell, snap-action thermal switch designed to open its contacts at 65°C, providing reliable over-temperature protection for electrical appliances, power supplies, and industrial control systems operating at up to 250V AC/DC and 5A.

Features

  • 65°C (±5°C) normally open (NO) bimetallic snap-action switch.
  • Rated for 5A at 250V AC/DC, suitable for direct line-voltage control.
  • Durable metallic shell construction for robust thermal conduction and mechanical protection.
  • Pre-set, non-adjustable temperature trip point for consistent, maintenance-free operation.
  • Compact design with 7cm lead wires for easy integration into appliances and enclosures.

Out of stock

Description

The KSD9700/BK05-BB1D is a hermetically sealed, bimetallic disc thermostat. When the ambient temperature around its metallic shell reaches the calibrated set point of 65°C, the internal bimetallic disc snaps, mechanically opening the electrical contacts to break the circuit. This provides a fail-safe, normally open (NO) protection mechanism to prevent overheating in connected devices.

Its robust metallic housing ensures fast thermal response and durability in demanding environments. The switch is pre-calibrated at the factory and is not user-adjustable, guaranteeing consistent trip performance. With a rating of 5A at 250V, it can directly interrupt significant power loads in applications like transformers, motors, and heating elements without requiring an additional relay.

Key Features

  • Bimetallic Snap-Action Mechanism: Provides quick, positive contact opening at the precise temperature threshold for reliable circuit interruption.
  • High-Current Capacity: Handles up to 5A at 250V AC/DC, enabling direct control of primary power circuits.
  • Metallic Encapsulation: Ensures excellent thermal conductivity for accurate temperature sensing and offers high mechanical strength.
  • Factory Pre-Set Calibration: Delivers consistent 65°C (±5°C) trip accuracy without need for user adjustment.
  • Normally Open (NO) Configuration: Circuit remains open upon reaching set point, providing a fail-safe thermal cutoff.
  • Compact & Lightweight Build: Minimal footprint and low weight for easy installation in space-constrained applications.

Applications

  • Over-temperature protection in power supplies, battery chargers, and AC/DC adapters.
  • Thermal cutoff safety for small motors, transformers, and solenoids in appliances.
  • Temperature monitoring and control in coffee makers, water heaters, and other heating elements.
  • Embedded thermal safety in lighting fixtures, LED drivers, and electronic ballasts.
  • Industrial equipment protection in control cabinets, power distribution units, and machinery.

Technical Specifications

Manufacturer Part NumberKSD9700/BK05-BB1D
Item TypeThermal Switch / Thermostat
Rated Voltage250V AC/DC
Rated Current5A
Operating Temperature (Trip Point)65°C Normally Open (NO)
Switch ConfigurationNormally Open (NO)
Housing MaterialMetallic Shell
Cable LengthApprox. 7 cm
Contact TypeSnap-action (Bimetallic Disc)

Frequently Asked Questions

What is the switch configuration and how does it work?

This is a Normally Open (NO) bimetallic snap-action switch. The contacts are open at room temperature. When the temperature at the metallic shell reaches the calibrated 65°C set point, the internal bimetallic disc snaps, mechanically closing the contacts momentarily before returning to open, breaking the circuit to provide over-temperature protection.

What is the maximum electrical load this switch can handle?

The switch is rated for a maximum of 5 Amps at 250 Volts AC or DC. This allows it to directly interrupt significant power in circuits powering motors, heaters, or transformers without requiring an external relay. Do not exceed these ratings to ensure reliable operation and safety.

Can I adjust the 65°C trip temperature?

No, the KSD9700/BK05-BB1D is a factory pre-set, non-adjustable thermal switch. The bimetallic disc is calibrated to snap at 65°C (± a typical tolerance of ~5°C). For a different trip temperature, you would need a model with a different pre-set value.

How should I mount and wire this thermal switch?

For accurate sensing, the metallic shell must be in good thermal contact with the component or surface you wish to monitor (e.g., using thermal paste or a clamp). Connect the two lead wires in series with the load you want to protect. Ensure all electrical connections are secure and insulated, respecting the 250V/5A limits.

Package Includes

  • 1 x KSD9700/BK05-BB1D Metallic Shell Temperature Control Switch (65C Normally Open)

Additional Information

Weight 0.03 kg
Dimensions 9 × 7 × 1 cm