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| Model | UKP-400 | UKP-630 | UKP-800 |
| Number of Poles | 3P / 4P | 3P / 4P | 3P / 4P |
| Rated Current Ie (A) | 250–400 | 400–630 | 700–800 |
| Rated Insulation Voltage Ui / Ue (AC-20 / DC-20) | 1000 V | 1000 V | 1000 V |
| Dielectric Strength (50 Hz / 1 min) | 10 kV | 10 kV | 10 kV |
| Rated Impulse Withstand Voltage | 12 kV | 12 kV | 12 kV |
| Rated Making Capacity (A) | Up to 4000 | Up to 6300 | Up to 8000 |
| Rated Breaking Capacity (A) | Up to 3200 | Up to 5040 | Up to 6400 |
| Rated Short‑Time Withstand Current (kA) 1000 V / 0.15 s | 31 | 38 | 38 |
| Rated Short‑Time Withstand Current (kA) 1000 V / 0.25 s | 24 | 36 | 36 |
| Rated Short‑Time Withstand Current (kA) 1000 V / 1 s | 15 | 20 | 20 |
| Rated Short‑Circuit Making Capacity (kA) | 30 | 40 | 40 |
| Operating Torque (N·m) | 16 | 27 | 27 |
UKP-800F22K 4-Pole 800A Switch Disconnector Center-Handle Isolator Switch for 3-Phase Neutral Distribution Systems
The UKP-800F22K is the 4-pole version of the 800A UKP switch-disconnector family, purpose-built for systems that require simultaneous switching of three phases plus neutral (3P+N). The operating handle is mounted on the front face of the switch, positioned centrally across the four poles, giving a balanced, symmetrical footprint that suits panels where neutral disconnection is a code or design requirement.
Like the 3-pole variant, it is fixed via base/screw panel mounting with an indoor operating handle for direct front-of-panel operation. Electrically it shares the same robust ratings as the rest of the 800A range: 700–800A selectable current, 1000V rated insulation voltage, 10kV dielectric strength, 12kV impulse withstand, up to 8000A making capacity and 6400A breaking capacity, with short-time withstand currents of 38kA/36kA/20kA at 1000V.
Free Quote NowKey Features
- 4-pole design for full 3-phase + neutral isolation
- Centrally positioned front handle for balanced mechanical operation across all four poles
- Base mount / screw mount panel fixing
- Visible position indicator window
- Stored-energy (spring) mechanism for quick-make, quick-break switching
- On-load operation capability for flexible maintenance scheduling
- Selectable 700A/800A current rating
- High insulation performance suited to systems with strict neutral-switching and earthing requirements
Application
- Main incoming switch for distribution systems requiring neutral disconnection (TT/TN-S earthing arrangements)
- 4-pole isolation for generator changeover panels and standby power switchboards
- Industrial power distribution boards where local codes mandate switched neutral
- Substation and electrical room equipment isolation for 4-wire systems
- Large commercial building main distribution panels with 3-phase + neutral service
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