As the core micro switch developed by Yueqing Tongda for general-purpose precision control scenarios, the Weipeng Driver Normally Closed Waterproof Micro Switch is positioned around 'compact design and fast, precise triggering.' With 35 years of experience in micro switch manufacturing, it combines sensitive response, long lifespan, and broad adaptability, making it a key component for circuit control in consumer electronics, industrial control, smart home devices, and more, providing reliable travel detection and functional on/off solutions for equipment.
Micro Switch Introduction
FSK-20 is a specialized switch designed by Yueqing Tongda to meet the electrical control requirements in harsh environments. Its core value lies in providing reliable sealing protection on top of the convenient operation of a standard marine switch, ensuring that the equipment can operate safely and stably in humid, dusty conditions, or even in situations that require temporary washing.
The housing is made of flame-retardant PA66 reinforced nylon, treated with high-temperature modification, combining flame resistance (UL94 V-0 rating) with anti-aging performance. Its operating temperature range covers -25°C to 85°C, capable of withstanding high and low-temperature cycles to prevent cracking or performance degradation in extreme environments. The contact system uses highly wear-resistant silver alloy material, optimized through vacuum plating process, with an initial contact resistance of ≤50mΩ, insulation resistance of ≥100MΩ (500VDC), and a terminal withstand voltage of 1500V AC, effectively preventing leakage and contact oxidation in humid environments.
Typical Application Scenarios
This product is specially designed for devices that need dustproof and waterproof protection, such as:
1、Outdoor Equipment: Garden tools, outdoor lighting control boxes, advertising light boxes.
2、Industrial Equipment: Food processing machinery, packaging equipment, small water pump control panels, cleaning equipment.
3、Special Vehicles and Facilities: Agricultural machinery, marine equipment, control panels of public facilities.
4、Equipment for Humid Environments: Kitchen appliances, bathroom electrical devices, warehouse cleaning equipment.
Micro Switch Parameter (Specification)
| ITEM | Main Technical Parameters |
| 1 | Electrical Rating :1A/3A 250VAC |
| 2 | Electrical lifetime : Min.10000 cycles |
| 3 | Contact Resistance :<50mΩ |
| 4 | Operating force:70±20gf |
| 5 | Free position:7.3±0.2mm |
| 6 | Operating position:7.0±0.2mm |
| 7 | Ambient temperature:T85° |
| 8 | Withstand Voltage :Between terminal and terminal 500V/5S/5mA; |
| Between terminals and case 1500/5S/5mA | |
| 9 | Insulation Resistance:>100MΩ Test Voltage 500VDC |
| 10 | Proof Tracking Index PTI :175V |
Micro Switch Details
