How to use Dongya industrial switches

Dongya industrial switches, including air switches and DC contactors, should be installed according to rated specifications, wired correctly, and operated within their designed load and environmental limits.Installation GuidelinesMounting: Ensure the switch is securely mounted in a dry, ventilated area with ambient temperatures between -25°C and +40°C and relative humidity below 80% .Wiring:For main circuit terminals, tighten screws to a torque of 4–5 N·m.For control circuit terminals, tighten screws to 1–1.5 N·m .Ensure correct polarity for polar-type DC contactors; non-polar types can be connected in any direction .Load Ratings: Verify that the switch's rated voltage and current match your application. For example, ZLJM-500C contactors support up to 500A at 80VDC or 250VAC .OperationSwitching: Operate the switch within its rated contact switching capability. Avoid exceeding the maximum coil power dissipation (e.g., 1.8–15W depending on model) to prevent overheating .Overload Performance: Dongya switches can handle 120% of rated current for 2 hours, but continuous operation above rated current is not recommended .Air Switches: These automatically disconnect the circuit in case of leakage or overcurrent. Ensure the magnetic ring inductor and live/neutral wiring are correctly installed .Safety PrecautionsAlways disconnect power before installation or maintenance.Avoid frequent plugging/unplugging of connected devices to prevent damage to the switch or socket .Ensure proper grounding to prevent electric shock.Do not exceed the rated voltage, current, or environmental limits.MaintenancePeriodically inspect terminals for tightness and signs of corrosion.Check for abnormal temperature rise; for currents below 100A, temperature rise should not exceed 80K, and for currents above 100A, not more than 120K .Clean dust and debris from the switch housing to maintain reliable operation. By following these installation, operation, and maintenance guidelines, Dongya industrial switches can provide reliable performance in industrial applications such as power distribution, EV systems, and mechanical engineering projects .