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HK-14 21A High-Power Fail-Safe High-Temperature Micro Switch

As the benchmark model of Yueqing Tongda Cable Power Plant's micro switch series, the HK-14 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.

Model:HK-14-21AP-354

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Product Description

WEIPENG® is a leading HK-14 21A High-Power Fail-Safe High-Temperature Micro Switch manufacturers, suppliers and exporter.

Micro Switch Introduction

Using a classic snap-action mechanism, the trigger response time is ≤6ms, with the trigger travel precisely controlled between 0.2-0.8mm. The operating force ranges from 2-5N, providing a crisp and clean pressing feel without any hysteresis or sticking, allowing for precise control of 'touch to connect, release to disconnect.' The contacts are made of highly wear-resistant silver alloy and treated with a vacuum coating process. The initial contact resistance is ≤25mΩ, and the rated load supports 1A/250V AC or 3A/125V AC, effectively resisting arc erosion and preventing contact burn-out caused by high-frequency use.

The environmental adaptability is equally impressive. The product can operate in a wide temperature range from -25℃ to 125℃, pass a three-axis vibration test at 10-55Hz with an amplitude of 1.5mm, maintain an insulation resistance of ≥100MΩ (500VDC), and withstand a voltage of 1000V AC between terminals, ensuring stable performance even in industrial workshop vibration environments or the high-temperature conditions of a car engine compartment.

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

1.Sate, reliable basic switch
2.Nice appearance,tight contiguration.Charactenistic:small contact dlearance,quick action, high sensitivity and small 3.operating travel.
4.Long lite, high reliablity
5.A variety of contact terminals
6.A varnety of temperature degree
7.A variety of levers
8.Adopt themosetting plastic or themoplastic
9.Widely usedinhome apliane elecroninc equipmentautomatic machine communication equioncar electron,apparatus and 10.instument,electric motion tool etc.

Micro Switch Details