Elección de la necesidad de microinterruptores 5 Pasos clave

Since the microswitch’s introduction in the 1930s, pequeños microinterruptores electromecánicos, como microinterruptores, han evolucionado para cumplir con varios requisitos de aplicación, incluyendo aeroespacial, electrodomésticos, boiler controls, Equipo medico, and sprinkler systems, equipo de prueba, temporizadores, and vending machines. People use micro switches to detect temperature, posición, and liquid level.

Precision micro switches generally have three primary types, operating handle, and shell-type specifications. Some microswitches use a push and spring design. Whether factory engineers are looking for a thermostat for residential heating or industrial boiler control, or a level switch for a large oil tank, there are five key characteristics to consider:

• Dimensions
• Electrical requirements (corriente de voltaje)
• Fiabilidad (vida mecánica / eléctrica)
• Environmental factors (ambientes peligrosos, rangos de temperatura)
• Agency approvals

Here are five key steps to help you choose the suitable microswitch for your specific application

la gente ajusta el interruptor a 1 Understand how switching form factors affect other characteristics.

Switches size matters when choosing a micro switch. Switch size is directly related to its current range, travel, y fuerza operativa. Por ejemplo, one of the smallest microswitches on the market today measures 0.50″ x 0,236″ x 0,197″ (LxAnxAl). While this tiny switch is suitable for detecting circuit conditions in compact circuit breakers, it typically only interrupts 0.1 El papel del interruptor magnético del refrigerador. 3 amps (A) and has a short stroke.

Applications that require higher currents require larger switches. Por ejemplo, the micro switch that detects the liquid level in a fuel tank application must provide a large stroke and withstand a large current. Usualmente, the switch drives the pump in level switch applications and carries a large current. This working environment requires a large microswitch rated at 20A or 25A at 125VAC or 250VAC.

Consejo: Cuanto menor sea el tamaño del interruptor, the smaller the travel and the interrupted current. Además, the external size of the switch also affects the operating force. Ideally, engineers need a switch with a low operating force and high current capacity. Pero de hecho, a compromise is required between these two parameters.

Microswitches maintain good contact while providing an extensive current-carrying range. The micro switch requires a stronger spring, increasing the switch’s operating force and size. Las fuerzas operativas pueden variar desde 2 grams in pressurized air-type applications to 8 ounces in solenoid valve applications (where higher operating forces are required). One of the most significant switches on the market measures 1.94″x0.69″x1.3″ (LxAnxAl).

Engineers should also pay attention to the differential travel of the switch—the distance between the switch’s tripped position and its reset position. Its threshold will vary according to different applications. Por ejemplo, en aplicaciones de interruptor de temperatura, Los puntos de funcionamiento de encendido/apagado deben estar lo más cerca posible., y el recorrido diferencial debe ser tan bajo como 0.0001 pulgadas. Sin embargo, applying a liquid level pump may cause the make-up pump to start and stop too frequently, shortening the pump’s service life if the differential stroke is too close.

la gente ajusta el interruptor a 2 Conozca sus requisitos eléctricos.

Microswitches are typically capable of breaking currents from 5mA/5VDC to 25A/250VAC. The Micro Switch product line offers a range of products from low energy consumption to power load electrical types for various applications. Engineers must know the current and voltage ratings (CA o CC) required to select the appropriate switch for a specific application.

As all kinds of devices in all industries strive for low energy consumption, microswitches must operate at low currents (cargas de nivel lógico) and DC voltage. Sin embargo, some applications require switches that break high currents and voltages, such as industrial-grade pump applications. Además de los requisitos de carga., engineers must also select the appropriate circuit.

The switch contacts must be normally open (NO) y normalmente cerrado (CAROLINA DEL NORTE). For NO type contacts, usually, no current flows between the contacts. The contacts are closed when the switch is actuated and connected. Para contactos tipo NC, there is usually a current flow between the contacts. The contacts are opened when the switch is actuated, and the circuit is disconnected.

la gente ajusta el interruptor a 3 Considere las condiciones ambientales..

Environmental requirements greatly influence the selection of microswitches, especially in applications requiring high reliability and criticality, como control industrial y equipos médicos. Understand the environmental conditions of the application, including contaminants in the air that may enter the switch, El líquido en el que se encuentra el interruptor., y requisitos de temperatura de funcionamiento.

You must choose a sealed switch with a wide operating temperature range for applications in harsh environmental conditions. Highly reliable microswitches can operate from -65 grados Fahrenheit (-54 grados Celsius) El papel del interruptor magnético del refrigerador. 350 grados Fahrenheit (177 grados Celsius) for various applications. Al mismo tiempo, You must note that the degree of protection of the switch should be at least IP67 to prevent liquid intrusion. The switches’ function eliminates the need to spend a lot of time designing an enclosure that achieves the same degree of protection.

la gente ajusta el interruptor a 4 Clarify working life requirements.

Switch reliability is critical.

It would be best to determine how much electrical and mechanical operating life an application needs.

Diferentes interruptores tienen diferentes materiales de contacto., housings, and terminals to meet different applications’ Requisitos de vida eléctricos y mecánicos..

A highly reliable microswitch can operate 10 millones a 20 millones de veces antes de falla mecánica y 50,000 El papel del interruptor magnético del refrigerador. 100,000 veces a carga máxima antes de una falla eléctrica. En cuanto a la ligera diferencia de precio entre interruptores de diferentes calidades., es necesario considerar el costo total de uso. Because you’re not only paying for the switch, you’re also paying for the long-term, trouble-free operation of the switch. In many cases, the additional cost of using a more reliable switch is offset by a lower warranty cost during use.

la gente ajusta el interruptor a 5 Check Agency Accreditation Requirements

Choosing switches, which meet various international electrical requirements, can help you simplify product design for different regions. Major standard certifications include UL certification in the United States, CUL certification or CSA certification in Canada, Certificación ENEC en Europa, and CQC certification in China.

When choosing a snap action micro switch, you need to consider multiple factors, como factor de forma, requisitos de carga, operating environment, y confiabilidad, so it is essential to understand the actual application requirements:

1. What size switch is required?
2. What is the required power rating?
3. Is it a low voltage application?
4. ¿Es necesario sellar el interruptor??
5. ¿El interruptor debe soportar temperaturas extremas??
6. Does it need international certification?

Why Choose Unionwell Micro Switch China Manufacturer?

Unionwell’s micro switch product series has basic microswitch, interruptores a prueba de agua, interruptores giratorios, interruptores basculantes, etc.

Los micro interruptores tienen UL, ENEC, CCC, y otras certificaciones. La fábrica ha pasado ISO9001, IATF16949, y garantías del sistema de calidad ISO14001.

se puede concluir si el rendimiento a prueba de agua del producto cumple con los requisitos >>

Our micro switches are widely used in home appliances, equipo electronico, máquinas automáticas, equipos de comunicacion, electrón del coche, aparato e instrumento, herramienta de movimiento eléctrico, etc. Para más microinterruptores, por favor visite nuestro sitio web oficial:

https://www.unionwellswitch.com/

Need more unionwell microswitch about price and inventory? Please send an email:

query@unionwellswitch.com