400 Amps load isolator disconnect switch, available in 3 pole and 4 pole, not only affordable but also high quality, If used in 380V, the power is 220 kW. When used in 660V, power is 185 kW.
400 Amps Isolator Switch Specifications
Basics | Model | ATOHGL-400A |
Pole | 3 Pole/4 Pole |
Weight | 3 Pole | 4.3kg |
Technical Parameters | 4 Pole | 5.4kg |
Rated current | 400A |
Rated insulation voltage Ui | 690V |
Dielectric strength | 1890V |
Rated surge-resistant voltage Uimp kV (installed category IV) | 6 |
Rated Working current le | 380V | AC-21B | 400A |
AC-22B | 400A |
AC-23B | 400A |
Motor power P(380V)kW | 380V | 220 kW |
660V | 185 kW |
Rated short-time withstand current lcw(kA rms)1.0s | 12.6 |
Rated breaking capability Icn (Arms) AC23 380VA | 3200 |
Rated making capacity Icm(Arms) AC23 380V | 4000 |
Rated short-current making capacity Icm'(Kapeak value) | 25.2 |
Mechanical durability (number of cyclic operation) | 800 |
Electrical Curability 380V | 200 |
Electric durability Ue=660V, Rated current | COSφ=0.95AC21 | 7500 |
COSφ=0.65AC22 | 500 |
COSφ=0.35AC23 | 250 |
Working Environment | Moment of operation | 14.5 Nm |
Temperature | -5℃~+55℃ |
Way of working | Continuously working |
Operating | Handle |
Installation form | Vertical |
Altitude | ≤2000m |
Pollution level | 3 |
Overvoltage level | Ⅲ |
400 Amps Load Isolator Disconnect Switch Operation Mode

Tips: What are the faults of the load isolating switch?
1. The contact part is overheated.
2. Porcelain insulation damage and flashover discharge.
3. Refuse to pull or close.
4. Wrong pulling and closing.
Favorable price load break isolator switch, 400 Amps, 3 pole and 4 pole are available, voltage 380V, power 220kW, voltage 660V, power 185kW, brand new, direct sale by factory.