As the benchmark model of Yueqing Tongda Wire Electric Factory's micro switch series, the High-Current Three-Pin Micro Switch for Microwave Ovens and Washing Machines features "high sensitivity, ultra-long lifespan, and multi-scenario adaptability" as its core advantages. Integrating the company's 35 years of switch manufacturing expertise, it has become a key control component in household appliances, automotive electronics, industrial automation, and other fields, thanks to its minimal contact gap and rapid action mechanism. Its performance and reliability have been certified by multiple authoritative organizations worldwide, securing its mainstream position in the niche market.
Micro Switch Introduction
The HK-14 series covers multiple rated loads, with mainstream specifications including 5A/10A/16A at 125/250V AC, meeting power requirements for various scenarios. The core electrical performance is excellent: initial contact resistance ≤25mΩ, ensuring low-loss conduction; insulation resistance ≥100MΩ (DC 500V), with a withstand voltage of 1500V AC (between terminals), effectively preventing leakage risks. The mechanical lifespan reaches up to 1 million cycles, and the electrical lifespan is suitable for long-term high-frequency use, with an operating frequency of up to 600 mechanical cycles per minute and 30 electrical cycles per minute, balancing durability and response speed.
Installation and Usage Guidelines
When installing, the switch must be mounted on a flat surface and fastened with a flat washer or spring washer to prevent malfunction or casing damage caused by uneven surfaces. Choose models based on the environment: for humid or dusty conditions, it is recommended to use a sealed custom version to enhance protection. Do not apply lubricating oil to the button or actuator to prevent contact sticking, functional failures, or even burnout. During storage, keep the product in a dry, ventilated area, protected from rain or snow, and avoid high temperature and humidity that may cause component aging, ensuring the product retains its original performance.
Micro Switch Parameter (Specification)
| Switch Technical Characteristics: | |||
| ITEM | Technical Parameter | Value | |
| 1 | Electrical Rating | 5(2)A/10A/16(3)A/21(8)A 250VAC | |
| 2 | Contact Resistance | ≤30mΩ Initial value | |
| 3 | Insulation Resistance | ≥100MΩ (500VDC) | |
| 4 |
Dielectric Voltage |
Between non-connected terminals |
1000V/0.5mA/60S |
|
Between terminals and the metal frame |
3000V/0.5mA/60S | ||
| 5 | Electrical Life | ≥50000 cycles | |
| 6 | Mechanical Life | ≥1000000 cycles | |
| 7 | Operating Temperature | -25~125℃ | |
| 8 | Operating Frequency |
electrical :15 cycles Mechanical :60 cycles |
|
| 9 | Vibration Proof |
Vibration Frequency : 10~55HZ; Amplitude :1.5mm; Three directions :1H |
|
| 10 |
Solder Ability : More than 80% of immersed part shall be covered with solder |
Soldering Temperature :235±5℃ Immersing Time :2~3S |
|
| 11 | Solder Heat Resistance |
Dip Soldering :260±5℃ 5±1S Manual Soldering : 300±5℃ 2~3S |
|
| 12 | Safety Approvals | UL、CSA、VDE、ENEC、TUV、CE、KC、CQC | |
| 13 | Test Conditions |
Ambient Temperature :20±5℃ Relative Humidity :65±5%RH Air Pressure :86~106KPa |
|
Micro Switch Feature and Application
Micro Switch Details
