HRTO series stone blade switchDetailed product description：

Scope of application
The HRTO series stone blade switch is mainly used as an isolation switch for lighting and distribution lines in low-voltage lines with a power frequency voltage of 380V. The short-circuit current is 3kA when the rated current is not greater than 200A, 6kA when 300A, and 8kA when 400A.

Structural features
The HRTO series stone blade switch is mainly composed of a base plate, contacts, fuses, and handles. This switch has fewer components, a simple structure, and easy replacement of fuses.

Normal working conditions
1. Surrounding air temperature:
a、 The ambient air temperature around the installation site shall not exceed an upper limit of+40 ℃ and a lower limit of not less than -5 ℃.
b. The average temperature value within 24 hours shall not exceed+35 ℃.
Note: For working conditions where the lower limit of ambient air temperature is -10 ℃ or -25 ℃, users need to declare it to the manufacturer when placing an order.
2. The altitude of the installation site shall not exceed 2000m.
Note: When the installation location of the switch exceeds 2000m, the user needs to declare to the manufacturer when ordering.
3. Surrounding atmospheric conditions, the relative humidity of the atmosphere should not exceed 50% when the ambient air temperature is+40 ℃, and there can be higher relative humidity at lower temperatures. The monthly average maximum relative humidity of the wettest month should not exceed 90%, and the monthly average minimum temperature of that month should not exceed+25 ℃. Measures must be taken to prevent condensation on the surface of the product due to temperature changes.
4. Pollution level: The environmental level around the switch is level 3.
5. Installation category: The installation category of the switch is III.
6. The switch should be installed vertically in a place without significant shaking or impact vibration.

Model and its meaning



Main technical data
a、 Rated voltage: 380V
b、 Rated current: divided into 200 and 300
c、 Voltage resistance: 2kV/s
d、 Insulation resistance: greater than 10M Ω
e、 Usage category: AC-20
f、 The rated breaking short-circuit current is 5kA, COS Φ=0.2


Appearance and installation dimensions



Note: The external dimensions are the highest dimensions when the switch handle is opened.
Ordering Notice
Users who order this series of stone gate switches must provide the following information:
1. Product name, model, agreed heating current, number of poles, and quantity, etc.
2. Self pickup or delivery, as well as shipment, must specify the full name, address, and mode of transportation of the unit.
3. The purchasing unit should also specify the bank and account number of the account, as well as the value-added tax number, etc.