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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-800F03K 3-Pole 800A AC Switch Disconnector – Panel Mount Isolator with Front Operating Handle for Power Distribution Cabinets
The UKP-800F03K is a 3-pole, 800A AC switch-disconnector engineered for main isolation duty inside low-voltage power distribution panels and switchboards. It uses a base/screw panel-mounting method with the operating handle installed directly on the front face of the switch body, allowing the enclosure door and the switch to share a single front-panel opening.
This makes it a compact choice for cabinet layouts where indoor (in-panel) manual operation is preferred over a door-mounted extension shaft. Rated for 700–800A (selectable), the unit provides a 1000V rated insulation voltage, 10kV dielectric withstand, and 12kV rated impulse withstand voltage, giving it strong performance margins for demanding industrial power circuits.
With a rated making capacity up to 8000A and breaking capacity up to 6400A, plus short-time withstand current up to 38kA, it is built to isolate heavy electrical loads reliably and repeatedly.
Free Quote NowKey Features
- 3-pole configuration for standard 3-phase isolation duty
- Front-face operating handle — quick installation, minimal panel depth required
- Base mount / screw mount fixing for secure cabinet installation
- Visible switch-position window for at-a-glance status confirmation
- Spring-stored energy mechanism for fast, positive open/close action independent of operator speed
- On-load switching capability — no need to de-energize the circuit before operation
- Selectable 700A/800A rated current for flexible sizing
- High dielectric strength (10kV) and impulse withstand (12kV) for reliable insulation performance
- Not intended for short-circuit or overload protection — designed purely as a load-break isolation device
Application
- Main incoming isolator in low-voltage distribution boards and power distribution cabinets
- Isolation point ahead of large motors, PLC control cabinets, and variable frequency drive (VFD) panels
- Maintenance disconnect for transformers, busbars, and switchgear in substations and electrical rooms
- Industrial plant power distribution systems requiring a visible, lockable isolation point
- Commercial and industrial building main switch or branch circuit isolator
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