Views: 4 Author: Site Editor Publish Time: 2022-08-22 Origin: Site
1. Scope of application
It is suitable for circuit control systems with AC 50Hz or 60Hz, voltage up to 380V, and DC working voltage up to 220V. It is suitable for open-air, rainy, snowy, dusty environments, such as remote control of cranes, electric hoists and other equipment. The product conforms to GB 14048.5 standard.
2. Model and meaning
"A" means with main power switch,
"B" means with start-stop switch.
3. Normal working conditions and installation conditions
1. The ambient air temperature is: -5 degrees to +40 degrees, and the average value within 24 hours does not exceed +35 degrees
2. Altitude: no more than 2000M
3. Atmospheric conditions: When the maximum temperature is +40 degrees, the relative humidity of the air does not exceed 50%, and a higher relative humidity can be allowed at lower temperatures, such as 90% at +20 degrees. Changes and occasional condensation should take special measures.
4. Pollution level: Level 3
5. Installation category: Class II
6. No significant shaking, shock vibration and no rain and snow invasion
7. In a medium without explosion hazard, and there is no gas and dust in the medium that is enough to corrode metals and destroy insulation
Fourth, the main parameters and technical performance
Contact resistance less than or equal to 50M
Mechanical life 1 million times for instant type, 50,000 times for emergency stop self-locking button
Electric life 50,000 times of emergency stop self-locking button, other 500,000 times (1200 times/1200 times per hour)
Protection level IP44