How to verify the sealing performance of Waterproof Push Button Switch
Let's introduce the classification of Push Button Switches:
Pushbutton Switches can be classified according to operation mode and protection mode. Common button categories and features:
1. Open type: suitable for flush mounting on the panel of switch board, control cabinet or console.
2. Protective type: With protective shell, it can prevent the internal button parts from being damaged by mechanical damage or people touching the live parts.
3. Waterproof: With a sealed shell, it can prevent rainwater from entering.
4. Anti-corrosion type: It can prevent the invasion of chemical corrosive gas.
5. Explosion-proof type: can be used in places containing explosive gas and dust without causing explosion, such as coal mines and other places.
6. Knob type: Rotate the operating contact with the handle, there are two positions of on and off, generally panel mounting.
7. Key type: Use the key to insert and rotate for operation, which can prevent misoperation or be provided for special operation.
Let's talk about one of the waterproof button switches:
As the name suggests, waterproof pushbutton switches are switches that can be operated with wet hands. It can be used safely in some humid environments that require waterproof pushbutton switches. At present, there are many brands and types of waterproof button switches on the market, but in the true sense, there are still relatively few button switches with good waterproof sealing performance.
There are many types of waterproof pushbutton switches, which can be divided into ordinary push-button type, mushroom head type, self-locking type, self-resetting type, rotary handle type, indicator light type, illuminated symbol type and key type. There are single button, double button, three button and different combinations.
It adopts building block structure, which is composed of button cap, return spring, bridge contact and shell.
The following judgment criteria are used to test the sealing performance of waterproof pushbutton switches:
1. Is the certification complete?
Relevant ROHS regulations, SGS certification; and has VDE / DEMKO / KEMA (now using EU ENEC), UL / CSA certification. These are the certification requirements for high quality waterproof push button switches. If it is necessary to export overseas.
2.IP waterproof standard
The main evaluation standard for the waterproof performance of waterproof switches is based on the IP waterproof rating standard. Look at the waterproof performance of the waterproof switch. It mainly depends on the last two digits XX of IPXX. The first digit X is from 0 to 6, and the higher level is 6. The second digit X is from 0 to 8, and the higher level is 8; The higher waterproof rating of the waterproof Pushbutton switch is IP68.
3.Other judgment criteria
The waterproof button switch has a reasonable design, long service life, high temperature resistance, and high current impact resistance, so you can have no worries!
