Key Features & Core Advantages

• SPDT single pole double throw circuit with (MOM)OFF(MOM) three-position momentary function for temporary signal control
• Knurled handle design for anti-slip operation, stable hand feel and clear gear positioning
• Dual electrical ratings: 15A 125VAC and 10A 250VAC, strong load capacity for AC circuits
• IP11 protection grade, basic dustproof performance for ordinary workshop and indoor environments
• Excellent electrical performance: Max 50MΩ contact resistance, ≥1000MΩ insulation resistance @ 500VDC
• High dielectric strength, withstand 1500VAC for 1 minute to ensure circuit safety
• Wide operating temperature: -25℃ ~ +85℃, adapt to cold and hot working conditions
• High-quality bakelite case, heat-resistant and insulating for long-term use
• Iron actuator, bushing and housing with nickel/chrome plating, anti-rust and anti-oxidation
• Copper alloy contacts with silver/gold plating options, optimize conductive performance
• 40,000 mechanical cycles and 10,000 electrical cycles, long service life
• RoHS certified, compliant with global environmental protection standards for export
• Pure mechanical structure without smart modules, low failure rate and easy maintenance
• Uniform black appearance, perfectly matched for sound equipment and industrial panels

Full Technical Specifications

Product Attributes

• Model: KN3A-123
• Circuit: SPDT Single Pole Double Throw
• Operation Mode: (MOM)OFF(MOM) Momentary Three Position
• Handle: Knurled Anti-slip Handle
• IP Rating: IP11 Basic Dustproof
• Electrical Rating: 15A 125VAC / 10A 250VAC
• Contact Resistance: ≤50MΩ
• Insulation Resistance: ≥1000MΩ (500VDC)
• Withstand Voltage: 1500VAC / 1min
• Temp Range: -25℃ ~ +85℃
• Lifespan: Mechanical 40000 / Electrical 10000 Cycles
• Main Materials: Bakelite, Iron (Nickel/Chrome Plated)
• Certification: RoHS
• Structure: Pure Mechanical (Non-smart)

Product Advantages

This KN3A-123 SPDT momentary toggle switch adopts classic knurled anti-slip handle, bringing comfortable and stable operation. The (MOM)OFF(MOM) three-position momentary function is specially designed for temporary signal triggering and mode switching, which is widely used in audio equipment. The switch has two sets of AC load specifications to meet different power circuit demands. With IP11 dustproof grade and wide temperature adaptability, it works stably in most indoor industrial and commercial environments. The bakelite base features excellent heat resistance and insulation. Iron parts with nickel and chrome plating effectively prevent rust and oxidation, while copper alloy contacts with optional silver or gold plating ensure stable current transmission. It has passed RoHS environmental certification, meeting global export standards. As a pure mechanical switch, it has a simple structure, low failure rate and convenient maintenance. With long mechanical and electrical life, it is a durable and cost-effective control component for professional sound equipment and industrial control panels.

Application Scenarios

This RoHS-compliant toggle switch is sold to Europe, North America, Southeast Asia and other global markets, focusing on audio equipment and industrial control fields.

• Professional audio, stereo and stage sound equipment signal control switches
• Audio power amplifiers, mixers and peripheral device mode selectors
• Industrial control panels and low-voltage circuit momentary trigger components
• Electromechanical equipment and workshop auxiliary control buttons
• Commercial electrical appliances and power distribution auxiliary switches
• Electronic DIY projects and audio customized circuit modules

Max. Current: 15A, 10A
Max. Voltage: 250 VAC
Mechanical Life: 40000cycles
IP level: IP11
Color: Black
FUNCTION: (MOM)OFF(MOM)
RATING： 10A 250VAC 15A 125VAC
Certification： RoHs

Contact Resistance:50MΩ Max
Insulation Resistance:500VDC 1000MΩ Min
Dielectric Strength:1500VAC， 1 Minute
Operatiing Temperature:-25ºC~+85ºC
Electrical Life:10000 cycles
Mechanical Life:40000 cycles
Circuit:SPDT
Switch function:ON-OFF ON
Materials:
Case:Bakelite
Actuator:Iron, Chrome or nickel-plated
Bushing:Iron， Nickel -plated
Housing:Iron， Nickel -plated
Contact/Terminals：Copper Alloy, Silver or gold-plated

Product Images:

FAQ

1. What circuit type and switch function does this product have?
It is SPDT (Single Pole Double Throw) type, with (MOM)OFF(MOM) three-position momentary function.

2. What are the voltage and current parameters?
Ratings: 15A 125VAC and 10A 250VAC; maximum voltage is 250VAC.

3. What is the IP protection level and working temperature?
IP11 dustproof grade; operating temperature ranges from -25℃ to +85℃.

4. What are the key electrical performance indicators?
Contact resistance ≤50MΩ; insulation resistance ≥1000MΩ @ 500VDC; withstand 1500VAC for 1 minute.

5. What about mechanical and electrical lifespan?
Mechanical life: 40000 cycles; Electrical life: 10000 cycles.

6. What materials are used for each part?
Case: Bakelite; actuator, bushing and housing: plated iron; contacts: copper alloy with silver/gold plating optional.

7. Does it have environmental certification and smart functions?
It is RoHS certified; it is a pure mechanical switch without smart modules.

8. What is the feature of the handle?
It adopts knurled design for anti-slip and stable operation.

9. What are the main application fields?
Mainly used for professional sound equipment and various industrial control systems worldwide.