SKU: SENS-3544
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Focusens Temperature Switch Normally Closed 105±3°C

₹40.00 (Inclusive of all taxes)
Out of Stock

The Focusens Temperature Switch is a normally closed (NC) thermal safety device rated for 105°C ±3°C activation. It provides a simple, reliable method for over-temperature protection in appliances, power supplies, and industrial control systems by interrupting a 250V/5A circuit when its setpoint is exceeded.

Features

  • Normally Closed (NC) contact configuration opens at 105°C ±3°C
  • Rated for 250V AC/DC at 5A maximum load
  • Plastic housing for electrical insulation and durability
  • Simple two-wire installation for series circuit protection
  • Compact form factor for integration into tight spaces

Out of stock

Description

This Focusens temperature switch operates as a thermally-actuated, normally closed (NC) single-pole, single-throw (SPST) switch. Under normal operating conditions below its calibrated setpoint, the internal bimetallic disc or snap-action mechanism maintains a closed circuit, allowing current to flow to the protected load. When the ambient temperature surrounding the switch body reaches the precise trip point of 105°C (±3°C tolerance), the mechanism snaps open, breaking the circuit to halt operation and prevent overheating damage.

Designed for direct series connection within a control or power line, the switch requires no external power supply or signal conditioning. Its plastic housing provides safe electrical insulation and resists corrosion, making it suitable for integration into consumer appliances, motor controls, transformer enclosures, and HVAC equipment where reliable, maintenance-free thermal cutoff is required.

Key Features

  • Fixed setpoint thermal switch with 105°C ±3°C activation tolerance
  • Normally Closed (NC) contact design for fail-safe over-temperature protection
  • Robust switching capacity: 5A at 250V AC/DC
  • Durable plastic housing ensures electrical safety and long-term stability
  • Mechanical snap-action mechanism provides crisp, reliable contact operation
  • Maintenance-free operation with no calibration or external power required
  • Compact and lightweight design for easy mounting in confined spaces
  • High-value build for cost-effective integration into safety-critical circuits

Applications

  • Over-temperature protection in power supplies, battery chargers, and transformers
  • Thermal cutoff safety in coffee makers, heaters, and small kitchen appliances
  • Motor winding and bearing temperature monitoring in fans and pumps
  • Preventive safety interlock in lighting ballasts and electronic enclosures
  • Temperature monitoring in industrial control cabinets and PLC panels

Technical Specifications

Item TypeThermal Switch / Thermostat
Model NameTemperature Control Switch
Actuation Temperature105°C ±3°C
Contact ConfigurationNormally Closed (NC)
Rated Voltage250V
Rated Current5A
Housing MaterialPlastic
Tolerance±3°C
Shipping Weight0.01 kg
Shipping Dimensions10 × 5 × 2 cm

Frequently Asked Questions

What does 'Normally Closed (NC)' mean for this temperature switch?

A Normally Closed (NC) configuration means the switch's internal contacts are closed, allowing current to flow, when the ambient temperature is below its 105°C setpoint. It acts as a closed circuit under normal conditions. Only when the temperature rises to the trip point does the mechanism open, breaking the circuit to stop the connected device and prevent overheating.

What is the maximum electrical load this switch can handle?

This thermal switch is rated for a maximum load of 5 Amps at 250 Volts, either AC or DC. This rating defines the maximum current and voltage of the circuit it can safely interrupt when it trips open. Exceeding these ratings may damage the contacts or pose a safety hazard.

How accurate is the 105°C trip temperature?

The switch has a factory-set trip point of 105°C with a tolerance of ±3°C. This means the actual activation temperature will occur within the range of 102°C to 108°C. The tolerance accounts for minor variations in manufacturing and ensures consistent performance within this specified band.

How do I install and wire this temperature switch?

Installation is straightforward. The switch has two terminals. Wire it in series with the load (e.g., a heating element or motor) and the power source on the line you wish to control. Ensure the switch body is in direct thermal contact with the surface or area you need to monitor. No external power or complex circuitry is required.

Package Includes

  • 1 x Focusens Temperature Switch (Normally Closed, 105°C ±3°C)

Additional Information

Weight 0.01 kg
Dimensions 10 × 5 × 2 cm