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  • Small Microswitch KW4-3Z-3 Travel Limit Switch Three Leg Roller with Handle 5A 250V Key Switch
  • Small Microswitch KW4-3Z-3 Travel Limit Switch Three Leg Roller with Handle 5A 250V Key Switch
  • Small Microswitch KW4-3Z-3 Travel Limit Switch Three Leg Roller with Handle 5A 250V Key Switch
  • Small Microswitch KW4-3Z-3 Travel Limit Switch Three Leg Roller with Handle 5A 250V Key Switch
  • Small Microswitch KW4-3Z-3 Travel Limit Switch Three Leg Roller with Handle 5A 250V Key Switch
  • Small Microswitch KW4-3Z-3 Travel Limit Switch Three Leg Roller with Handle 5A 250V Key Switch
Small Microswitch KW4-3Z-3 Travel Limit Switch Three Leg Roller with Handle 5A 250V Key Switch

Small Microswitch KW4-3Z-3 Travel Limit Switch Three Leg Roller with Handle 5A 250V Key Switch

$0.20-$0.40/ Piece|100 Piece/Pieces(Min. Order)
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Small Microswitch KW4-3Z-3 Travel Limit Switch Three Leg Roller with Handle 5A 250V Key Switch

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Travel Limit Control: Designed to act as a manual microswitch for circuit activation/deactivation in machinery, appliances, and automation systems. The three-pin configuration enables flexible wiring for on/off control in mechanical and electrical applications.
  • Durability & Precision: Features a stainless steel actuator with a hinged design for reliable tactile feedback and corrosion resistance, ensuring longevity in harsh environments.

Key features

  • 1. Corrosion-Resistant Stainless Steel Actuator

    • With a corrosion-resistant stainless steel actuator, ensure durability in harsh environments. ~30% longer lifespan than plastic actuators*.

  • 2. Three-Pin Flexible Wiring Configuration

    • With a three-pin design, achieve versatile wiring for diverse applications. Adaptable to more setups than two-pin switches*.

  • 3. High-Speed 10T85μ Contact Time

    • With 10T85μ contact time, enable rapid switching for precise control. Up to 2x faster than standard microswitches*.

  • 4. Robust Performance for Industrial and Home Use

    • With a 250V/5A rating, handle demanding tasks in appliances and industrial equipment. Reliable in environments where traditional switches fail*.

  • 5. CQC and CE Safety Certifications

    • With CQC and CE certifications, meet strict safety and quality standards. Ensures compliance compared to uncertified alternatives*.

Product details

Small Microswitch KW4-3Z-3 Travel Limit Switch Three Leg Roller with Handle 5A 250V Key Switch

The Small Microswitch KW4-3Z-3 is a robust manual travel limit switch designed for reliable circuit control in diverse applications. Featuring a stainless steel actuator and green plastic housing, it combines durability with safety certifications (CQC, CE) and a three-pin configuration for flexible wiring. Rated for 250V AC and 5A, it suits industrial, appliance, and automation systems requiring precise, high-speed switching (10T85μ contact time).

Technical specifications

FeatureSpecificationApplication Scenario
Material CompositionStainless Steel Actuator, Green Plastic HousingIndustrial machinery, outdoor equipment (corrosion resistance)
Voltage Rating250V ACHigh-voltage control in appliances/machinery
Current Capacity5ALow to medium power applications
Safety CertificationsCQC, CECompliance-driven projects in regulated industries
Contact Time10T85μ (85μs)High-speed automation systems
Three-Pin ConfigurationFlexible Wiring OptionsCustomized circuit designs in electronics

Customization guide

Adjustable parameters include:

  • Material: Stainless steel can be replaced with nickel-plated brass for enhanced conductivity in high-resistance environments.
  • Contact Time: Customizable to 50–100μs to meet specific automation requirements.
  • Actuator Design: Roller or lever configurations available for different mechanical interfaces.

Get inspired

The KW4-3Z-3’s rugged build and certifications make it ideal for harsh industrial settings. Its quick contact time ensures seamless integration into high-speed systems, while the three-pin design simplifies wiring in complex control panels.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Voltage Rating250V AC250V AC250V AC
Current Capacity5A+15% (5.75A)+30% (6.5A)
Contact Time85μs-15% (72μs)-30% (59.5μs)
Durability (Cycles)100,000+50% (150,000)+100% (200,000)
CertificationsCQCCQC + ULCQC + CE + UL

Supplier's note

  1. Technical Breakthroughs:

    • Stainless Steel Actuator: Withstands corrosive environments, extending lifespan by 40% compared to plastic actuators.
    • Three-Pin Flexibility: Reduces wiring complexity by 30% in multi-circuit systems.
    • Ultra-Fast Contact Time: 85μs response is 15% faster than industry standards, enabling precise automation control.

  2. Version Selection Guide:

    • Base Model: Ideal for standard applications (e.g., home appliances) where cost efficiency is prioritized.
    • Advanced Model: Choose for industrial machinery requiring higher current handling (+15%) and UL compliance.
    • Pro Model: Best for heavy-duty environments (e.g., marine equipment) needing triple-certification and 30% higher current capacity.

With the Pro Model’s 6.5A rating and 59.5μs contact time, you can safely control high-power systems while maintaining rapid response. Pair its CE certification with stainless steel durability to ensure reliability in extreme conditions.

Frequently asked questions

  • Which microswitch model is best for industrial equipment with 5A current and 250V voltage requirements?

  • How do I clean and maintain the stainless steel actuator of the KW4-3Z-3 microswitch?

  • Stainless Steel vs Plastic Actuators: Which is better for harsh environments in limit switches?

  • Is the KW4-3Z-3 microswitch CQC and CE certified for safety compliance?

  • Can the KW4-3Z-3 travel limit switch be used in appliances requiring quick contact response?

  • Does the KW4-3Z-3 offer customization for specific material needs?

  • How should I wire the three-pin configuration of the KW4-3Z-3 switch?

  • What’s the maximum voltage the KW4-3Z-3 can handle in industrial settings?

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