SKU: SENS-3598
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Generic KSD301 60°C Normally Closed NC Temperature Control Switch Thermostat - Bakelite, 250V 10A

₹21.00 (Inclusive of all taxes)
Out of Stock

The KSD301 is a bimetallic, normally-closed (NC) thermal switch rated for 250V AC/DC and 10A loads. This compact, bakelite-housed thermostat provides reliable, fixed-point temperature control at 60°C, suitable for appliance protection, HVAC safety cutoffs, and industrial equipment.

Features

  • Fixed 60°C (±5°C typical) bimetallic snap-action trip point.
  • Normally Closed (NC) contact configuration opens on temperature rise.
  • Robust 250V AC/DC, 10A switching capacity for direct load control.
  • Durable, heat-resistant Bakelite housing for electrical insulation.
  • Compact, screw-terminal design for easy integration into control panels or appliances.

Out of stock

Description

The KSD301 is a mechanical, fixed-temperature thermostat utilizing a bimetallic disc actuator. When the ambient temperature reaches its calibrated set point of 60°C, the disc snaps, physically opening the normally closed (NC) electrical contacts to interrupt the circuit. This provides a failsafe, non-resettable cutoff for overheating protection without requiring external power.

Its bakelite construction offers excellent electrical insulation and thermal stability for the rated voltage and current. The simple two-terminal design allows for direct series connection with heating elements, motors, or solenoids in appliances, power supplies, or small industrial equipment, providing a cost-effective and highly reliable over-temperature safety solution.

Key Features

  • Fixed-Temperature Bimetallic Actuator: Provides precise and repeatable thermal switching at 60°C with a typical tolerance of ±5°C.
  • High-Capacity Switching: Handles up to 10A at 250V AC/DC, enabling direct control of significant loads without a relay.
  • Durable Insulating Housing: Molded Bakelite body ensures long-term electrical safety and resistance to heat deformation.
  • Normally Closed Safety Design: Circuit is closed under normal conditions and opens upon over-temperature, acting as a safety cutoff.
  • Compact & Lightweight Build: Minimal footprint (approx. 9 x 6 x 2 cm) and low weight (3g) for space-constrained installations.
  • Maintenance-Free Operation: Fully mechanical design requires no calibration, batteries, or external signal conditioning.

Applications

  • Over-temperature protection in coffee makers, water heaters, and small kitchen appliances.
  • Safety cutoff for transformers, power supplies, and battery chargers.
  • Thermal management in HVAC fan units, duct heaters, and ventilation systems.
  • Motor winding protection in pumps, fans, and small industrial machinery.
  • Temperature monitoring in incubators, terrariums, and simple environmental controls.

Technical Specifications

Model NumberKSD301
Switch TypeThermostat, Normally Closed (NC)
Actuation Temperature60°C
Contact Rating10A @ 250V AC/DC
Housing MaterialBakelite
Contact ConfigurationSPST-NC (Single Pole, Single Throw - Normally Closed)
Approx. Weight3 g
Terminal TypeScrew Terminals (2-pin)

Frequently Asked Questions

What is the switching action of this KSD301 thermostat?

The KSD301 is a Normally Closed (NC) switch. Its internal bimetallic disc keeps the electrical contacts closed at temperatures below 60°C. When the sensed temperature reaches or exceeds 60°C, the disc snaps and physically opens the contacts, breaking the circuit. It does not automatically reset; contacts close again only when the temperature cools sufficiently below the trip point.

Can this switch control a 120V AC heater drawing 8 amps?

Yes, absolutely. The thermostat is rated for 10A at 250V AC/DC, which is well above the 8A load at 120V AC. You can wire it in series directly with the heater's live (hot) wire. Ensure the heater's power is disconnected during installation and that all connections are secure at the screw terminals.

How accurate is the 60°C trip temperature, and is it adjustable?

The trip temperature is fixed at 60°C by the factory-calibrated bimetallic element, with a typical tolerance of ±5°C. It is not user-adjustable. For a different set point, you would need to select a different model from the KSD series (e.g., KSD301-50°C, KSD301-70°C).

What is the purpose of the Bakelite housing?

Bakelite is a thermosetting phenol formaldehyde resin known for excellent electrical insulation, heat resistance, and mechanical strength. In this thermostat, it safely isolates the live electrical terminals, prevents tracking or short circuits, and maintains its shape and properties at the operating temperatures, ensuring long-term reliability and user safety.

Package Includes

  • 1 x KSD301 60°C Normally Closed Temperature Control Switch

Additional Information

Weight 0.02 kg
Dimensions 6 × 9 × 2 cm