Micro Limit Switch

Micro Limit Switch

The micro limit switch (Model: KW12-E) is a highly reliable and versatile switching device designed for accurate control and protection in electrical circuits that require frequent switching. Built with a precision snap-action mechanism, this Micro Switch limit switch offers long life, fast actuation, and consistent performance across various industries.

Product Features

Product Name: Micro Switch
Model Number: KW12-E
Rated Voltage: 250V AC / 125V AC
Rated Current: 3A @ 250V, 5A @ 125V
Rated Frequency: 50Hz
Contact Resistance: ≤ 30mΩ
Insulation Resistance: ≥ 2MΩ (500V DC)
Dielectric Strength: AC 1800V/min @ 50Hz
Ambient Temperature: -25°C to +85°C (25T85)
Mechanical Life: 5,000 cycles

Product Description

Key Features

1. Precision Snap-Action Mechanism
   Enables fast and accurate switching, providing tactile feedback and excellent response for control systems.

2. Multiple Terminal Options
   Available in solder terminals, bent foot terminals, PCB terminals, and #110 quick-connect terminals to fit various application needs.

3. Diverse Actuator Styles
   Can be configured with different actuator types, including push button, roller lever, short arm, and long arm, for flexible mechanical integration.

4. Flexible Current Handling
   Supports current ratings of 0.1A to 10A, suitable for both signal-level and power-level switching tasks.

5. Certified & Compliant
   Certified by UL, CUL, TUV, and CQC (File No.: E508056) and compliant with RoHS and REACH environmental standards.

Product Specification

Limit switch micro's terminal and press shank

Product Application

Typical Applications

The KW12-E micro switch limit switch is ideal for use in:

• Consumer Electronics: Keyboards, remote controls, smart toys

• Automotive Systems: Dashboards, power windows, seat positioning

• Industrial Automation: Limit sensing, machine control, robotics

• Medical Equipment: Instrument interfaces, detection systems

• Home Appliances: Washing machines, microwave ovens, air conditioners

• Telecom Devices: Routers, switches, control panels

Features

Rated Voltage: 250V AC and 125V AC This micro switch is rated to operate at two different AC voltage levels, 250 volts and 125 volts. These voltage ratings indicate the maximum electrical potential difference the switch can safely handle during operation. The dual voltage rating makes the switch suitable for a wider range of devices and systems that may operate at different voltage standards, ensuring compatibility and safety in various electrical environments.

Rated Current: 3A at 250V and 5A at 125V The switch has a current rating of 3 amperes when operating at 250 volts and 5 amperes at 125 volts. This means it can handle different current loads depending on the voltage it is used with, providing flexibility in its application. The current ratings are crucial for determining the power capacity of the switch and ensuring it can manage the electrical load of the connected devices without overheating or failing.

Rated Frequency: 50Hz Designed to operate at a frequency of 50 hertz, this switch is compatible with the standard power supply frequency used in many countries and regions. The frequency rating ensures that the switch can function correctly in synchronization with the alternating current cycles, which is essential for the proper operation of electrical devices and the prevention of malfunctions or damage.

Contact Resistance: Maximum of 30 milliohms The contact resistance of the switch is kept to a maximum of 30 milliohms, indicating a very low resistance when the switch is in the closed position. Low contact resistance is vital for minimizing energy loss and voltage drop across the switch, ensuring efficient transmission of electrical current and maintaining the overall performance of the electrical circuit.

Insulation Resistance: Minimum of 2 megaohms at 500V DC With an insulation resistance of at least 2 megaohms when tested with a 500-volt direct current, this switch demonstrates excellent insulation properties. High insulation resistance prevents unintended current leakage and electrical shorts, enhancing the safety and reliability of the device. It ensures that the switch can maintain the separation between conductive parts and prevent dangerous electrical faults.

Dielectric Strength: AC 1800V per minute at 50Hz The dielectric strength of the switch is rated at 1800 volts AC per minute at 50 hertz. This rating signifies the switch's ability to withstand high voltage without electrical breakdown, which is crucial for its safe operation in environments where it may be exposed to voltage surges or transient overvoltages. It ensures the switch can reliably isolate electrical conductors and prevent arcing or current flow where it is not desired.

Working Environment: Temperature range of 25T85 The switch is designed to operate within a temperature range denoted as 25T85. This indicates that the switch can function effectively in environments where the temperature varies within this specified range. The ability to operate across a range of temperatures makes the switch suitable for use in different climates and operating conditions, ensuring consistent performance whether in cooler or warmer settings.

Service Life: 5000 cycles The expected service life of the switch is 5000 cycles, which refers to the number of times it can be turned on and off before potential wear and tear may affect its performance. A longer service life means the switch is built to endure a significant amount of use, reducing the frequency of replacement and maintenance. This durability is essential for applications where the switch is frequently operated, ensuring reliability and cost-effectiveness over time.

FAQ

Q: What is the product name of this switch?

A: The product name is Micro Switch, a compact and efficient switching device used in various electronic and mechanical applications.

Q: What is the model number of this micro switch?

A: The model number is KW12-E, which identifies its specific specifications and features.

Q: What is the rated voltage for this switch?

A: This switch is rated for 250V AC and 125V AC, indicating the maximum electrical potential it can safely handle.

Q: What is the rated current capacity of the switch?

A: It can handle 3A at 250V and 5A at 125V, showing its flexibility in managing different current loads.

Q: What is the rated frequency for this switch?

A: The switch operates at a frequency of 50Hz, compatible with standard power supplies in many regions.

Why Choose Our Micro Limit Switch?

• ✔ High durability with over 5,000 actuation cycles

• ✔ Compatible with both 125V and 250V AC systems

• ✔ Designed for quick installation and secure connections

• ✔ Operates reliably under wide temperature ranges

• ✔ Complies with global safety and environmental standards

• ✔ Perfect fit for compact control systems and safety mechanisms

Product Variants

Our micro limit switches come in multiple configurations, allowing you to select:

• Stroke length (short or extended)

• Actuator type (push button, roller lever, etc.)

• Terminal layout (PCB, solder, quick-connect)

• Mounting options for flexible integration