The ambient air temperature is -5 ℃~+40 ℃ (certified); The average value over 24 hours shall not exceed+35 ℃. It can also be used for extreme temperatures ranging from -40 ℃ to+70 ℃ (L-type and M-type controllers).

Altitude: ≤ 2000m

Electromagnetic interference: suitable for environmental pollution level A

The installation position of pollution level 3 should be vertical, and the inclination in all directions should not exceed 5 degrees

Installation level: The main circuit and undervoltage release coil of the circuit breaker, as well as the primary coil of the power transformer, are rated as level IV, while the auxiliary circuit and control circuit are rated as level III

Transportation conditions: It should be gently withdrawn and placed, not reversed, and violent collisions should be avoided as much as possible