Key Features

• Heavy-duty DPDT (Double Pole Double Throw) circuit design, ON-OFF-On three-position function for dual circuit control
• Multiple AC rating combinations available to match diverse load and voltage requirements
• High-strength bakelite case, heat-resistant and insulation for long-term stable operation
• Iron actuator, bushing and housing with nickel or chrome plating, anti-rust and wear-resistant
• Copper alloy contacts and terminals, optional silver or gold plating to enhance conductivity
• Excellent electrical performance: max contact resistance 50mΩ, insulation resistance ≥1000MΩ @ 500VDC
• High dielectric strength, withstand 1500VAC for 1 minute without breakdown
• Wide operating temperature range: -25℃ ~ +85℃, adapt to cold and hot working environments
• Durable service life: 40000 mechanical cycles, 10000 electrical cycles
• RoHS compliant, meets international environmental protection standards
• Robust heavy-duty structure, strong load capacity for medium and high current circuits
• Standard installation size, easy to assemble on control panels and equipment housings
• Classic toggle design, comfortable operation and clear gear positioning
• Low failure rate, convenient maintenance for industrial and commercial equipment

Technical Specifications

Product Attributes

• Circuit: DPDT (Double Pole Double Throw)
• Function: ON-OFF-On 3 Position
• Max Rating: 20A / 250V AC
• Multi Ratings: 3 groups of AC current & voltage combinations
• Contact Resistance: ≤50mΩ
• Insulation Resistance: ≥1000MΩ (500VDC)
• Withstand Voltage: 1500VAC / 1min
• Temp Range: -25℃ ~ +85℃
• Main Housing: Bakelite
• Metal Parts: Iron with Nickel / Chrome Plating
• Contact: Copper Alloy (Silver / Gold Plated)
• Mechanical Life: 40000 Cycles
• Electrical Life: 10000 Cycles
• Certification: RoHS

Product Advantages

This KN series heavy-duty DPDT toggle switch adopts professional double pole double throw structure and classic ON-OFF-On three-position function, which can realize stable dual-circuit switching. It is equipped with multiple sets of current and voltage specifications, covering common medium and high current AC circuits. The bakelite case features excellent heat resistance and insulation performance. All iron structural parts are treated with nickel or chrome plating to effectively prevent rust and abrasion. Copper alloy contacts with silver or gold plating options ensure low resistance and stable current transmission. The product has superior electrical insulation and high voltage resistance, and can work normally in a wide temperature range from -25℃ to +85℃. With 40000 mechanical cycles and 10000 electrical cycles, it has long service life. It has passed RoHS certification, complying with global environmental requirements. The heavy-duty structure has strong load-bearing capacity, solid workmanship and simple operation. It is a reliable switching component for industrial electromechanical equipment, power distribution systems and various commercial electrical appliances.

Applications

• Industrial electromechanical equipment and machine tool control panel switches
• Power distribution boxes and low-voltage distribution circuit control components
• Engineering machinery and heavy-duty equipment mode selection buttons
• Commercial electrical equipment and public power control switches
• Automation equipment and dual-circuit signal switching modules
• Electrical engineering assembly and DIY high-current circuit accessories

Max. Current：20A
Max. Voltage：250VAC
Model Number：KN3(B)-203AP
Mechanical Life：40000 cycles
Certification：RoHs
Rating：10A 125VAC, 6A 250VAC
15A 125VAC, 10A 250VAC
20A 125VAC, 15A 250VAC
Contact Resistance：50MΩ Max
Insulation Resistance：500VDC 1000MΩ Min
Dielectric Strength：1500VAC， 1 Minute
Operatiing Temperature：-25ºC~+85ºC
Electrical Life：10000 cycles
Circuit：DPDT
Switch function：ON-OFF-ON
Case：bakelite
Actuator：Iron, Nickel or chrome-plated
Bushing：Iron，nickel-plated
Housing：Iron，nickel-plated
Contact/Terminals：Copper Alloy, Silver or gold-plated
Product images

FAQ

1. What is the circuit type and switch function?
It is DPDT (Double Pole Double Throw) type with standard ON-OFF-ON three-position function.

2. What are the voltage and current ratings?
Max voltage 250VAC, max current 20A. Multiple options: 10A 125VAC/6A 250VAC; 15A 125VAC/10A 250VAC; 20A 125VAC/15A 250VAC.

3. Key electrical performance parameters?
Max contact resistance 50mΩ; insulation resistance ≥1000MΩ @500VDC; withstand 1500VAC for 1 minute.

4. What is the working temperature range?
The applicable temperature is -25℃ ~ +85℃.

5. Introduction to main materials?
Case: bakelite; actuator, bushing and housing: iron (nickel/chrome plated); contacts & terminals: copper alloy (silver/gold plated optional).

6. Service life parameters?
Mechanical life: 40000 cycles; Electrical life: 10000 cycles.

7. Does the product have environmental certification?
Yes, it has passed RoHS certification.

8. What are the core advantages of this switch?
Heavy-duty load capacity, excellent insulation & voltage resistance, wide temperature adaptability and durable plated structure.

9. Main application scenarios?
Widely used in industrial equipment, machinery, power distribution and marine electrical devices.