KSD301 Bimetal Thermostat with 100000 Cycles Normally Closed or Open Temperature Protector for Automobile Cooling Fan

The KSD301 thermostat is a temperature-controlled bimetal thermal protector designed for automobile cooling fans and various household appliances. It features reliable snap action, precise temperature control, and long service life.

The KSD series thermostat operates using a bimetal disc that snaps into action when sensing temperature changes. This action pushes the contacts to open or close the circuit, providing reliable temperature control with minimal flashover and radio interference.

• Electrical Rating: AC 125V max 15A; AC250V 5A/10A/15A max 16A
• Action Temperature Range: -10°C to 300°C
• Recovery/Action Temperature Difference: 10-25°C (customizable)
• Temperature Deviation: ±3°C/±5°C/±10°C (customizable)
• Circuit Resistance: ≤50mΩ (initial value)
• Insulation Resistance: ≥100mΩ (DC500V Normal State)
• Dielectric Strength: AC50Hz 1500V/min (no breakdown)
• Life Cycle: ≥100,000 operations
• Contact Configuration: Normally closed or open options
• Mounting Options: Movable or immovable bracket
• Terminal Types: 187 series (4.8×0.5mm, 4.8×0.8mm) or 250 series (6.3×0.8mm)
• Terminal Angle: 0-90° bending angle (optional)
• Body Material: Plastic or ceramic options
• Temperature Sensor Face: Aluminum cap or copper head options

Manual Reset Type: Requires manual button press to reset after temperature drops 20°C from snap action point. Requires 4-6N force for reset.

Auto Reset Type: Automatically resets when temperature drops to specified point.

Widely used in automobile cooling fans and household appliances including:

• Coffee pots
• Automatic toasters
• Laminators
• Electric water pots
• Steam guns and irons
• Wind warmers
• Microwave ovens
• Water dispensers

This product has UL, CQC, VDE and RoHS certification approvals.