CHINT NH4 Switch Disconnector,
is designe to provide safe circuit isolation and switching in low-voltage electrical systems.
Built to IEC/EN 60947-3 standards, it ensures reliable manual disconnection under load.
The NH4 series is compatible with NB series MCBs and RCBOs, offering a wide rate current range from 32A to 125A and operating voltage up to 415V AC.
Its compact design, IP20 protection, and long mechanical life (8,500 operations) make it ideal for residential,
commercial, and light industrial applications.
- Standard Compliance: IEC/EN 60947-3
- Function: Manual load disconnection and isolation
- Compatible Devices: NB series MCBs / RCBOs
- Rated Current (Ie): 32A, 40A, 63A, 80A, 100A, 125A
- Rated Voltage (Ue): 240V (1P), 415V (2P–4P)
- Rated Frequency: 50/60Hz
- Rated Short-time Withstand Current (Icw): 12Ie for 1s
- Rated Making and Breaking Capacity: 3Ie at 1.05Ue, cosφ = 0.65
- Rated Short-circuit Making Capacity: 20Ie, t = 0.1s
- Dielectric Test Voltage: 1.89kV for 5s
- Rated Impulse Withstand Voltage (Uimp): 4kV (1.2/50μs)
- Rated Insulation Voltage (Ui): 500V
- Utilization Category: AC-22A
- Pollution Degree: 2
- Mechanical Life: 8,500 operations
- Electrical Life: 1,500 operations
- Ambient Temperature: −5°C to +40°C (daily average ≤35°C)
- Storage Temperature: −25°C to +70°C
- Terminal Connection Type: Cable, pin-type, or U-type busbar
- Terminal Size:
- Cable: up to 35mm² (AWG 18–2)
- Busbar: 18mm² (AWG 1/0)
- Tightening Torque: 2.5 N·m (22 In-lbs)
- Connection Method: From top or bottom
- Protection Degree: IP20
- Mounting: DIN rail or panel mount
- Dimensions (mm):
- 1P: H=74, W=18
- 2P: H=77, W=36
- 3P: H=77, W=54
- 4P: H=77, W=72
- Available Configurations: 1P, 2P, 3P, 4P
