Overview

This document provides technical specifications and features of various waterproof micro switches, primarily focusing on the FSK-20 and FSK-21 series, along with other related models such as HK-04G, DK4, HK-10, FSK-14, FSK-18, GNY51, and GNY53-5K.

Drive Mechanism and Contact Details

• Drive Mechanism: Spring-driven mechanism designed for long operational life.
• Contact Point: Silver contacts ensuring high reliability and extended lifespan.
• Mechanical Lifespan: High durability with IP67 waterproof rating.

Electrical Specifications

• Maximum rating: 3A at 12V DC.
• Microcurrent rating: 0.1A at 12V DC for certain models (e.g., FSK-20 series).
• Built-in resistor support available in some models (e.g., FSK-20 internal resistor series).

Physical Dimensions and Design

• FSK-20 Series: Dimensions approximately 13.4 mm x 12 mm x 5.3 mm.
• FSK-21 Series: Ultra-compact size of 8.3 mm x 6.5 mm x 5.3 mm.
• Various terminal structures are available to accommodate different installation requirements.
• Excellent vibration resistance suitable for multiple installation environments.

Model Variants

• Micro Switches: HK-04G, HK-04G-L, DK4, HK-10, FSK-14, FSK-18, FSK-20, GNY51, GNY53-5K, HK-08, HK-25.
• Button Switch: GNY51.

Installation and Circuit Information

• PCB mounting hole diagrams and circuit schematics are provided for proper installation.
• Switch resistance states: free state resistance (R2) and pressed state resistance (R1 + R2) are specified for models with normally closed (NC) function.

Environmental and Reliability Standards

• IP67 rating ensures waterproof and dustproof protection.
• Designed for excellent vibration resistance, enhancing reliability in harsh environments.

Additional Notes

• A variety of wire options are available for selection to suit different applications.
• Manufacturer: Yueqing Tongda Wire Electric Factory.

Summary

The document details a range of waterproof micro switches with robust mechanical and electrical characteristics, suitable for diverse industrial applications requiring compact size, high reliability, and environmental protection. Key features include spring-driven mechanisms, silver contacts, built-in resistor options, and compliance with IP67 standards.