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| Model | UKGD-250 | UKGD-250G | UKGD-325G |
| Poles | 2P/4P | 2P/4P | 2P/4P |
| Rated Current (Ie) | 100-250A | 100-250A | 100-325A |
| Rated Insulation Voltage (Ui/Ue) DC-20 | 1000V | 1500V | 1500V |
| Dielectric Strength | 10kV | 10kV | 10kV |
| Rated Impulse Withstand Voltage | 12kV | 12kV | 12kV |
| Conductor Cross-section (Cu/mm²) | 70-120 | 70-120 | 185 |
| Rated Making Capacity (A) | 2500 | 2500 | 3250 |
| Rated Breaking Capacity (A) | 2000 | 2000 | 2600 |
| Rated Short-Time Withstand Current (kA) | 8kA (1s) 10kA (0.05s) 20kA (0.15s) |
8kA (1s) 10kA (0.05s) 20kA (0.15s) |
8kA (1s) 10kA (0.05s) 20kA (0.15s) |
| Rated Short‑Circuit Making Capacity (kA) | 10 | 10 | 10 |
| Utilization Category | DC‑21B/PV2 | DC‑21B/PV2 | DC‑21B/PV2 |
| Mechanical Life (operations) | 10,000 | 10,000 | 10,000 |
| Degree of Protection | IP20/IP66 (outside enclosure) | IP20/IP66 (outside enclosure) | IP20/IP66 (outside enclosure) |
UKGD-250F11K 250A 2-Pole 1000V DC Switch Disconnector Base Mount for PV Combiner Box
The UKGD-250F11K is a 2-pole DC switch-disconnector rated up to 250A and DC1000V, purpose-built for solar PV combiner boxes, string inverters, and low-to-mid voltage battery isolation points.
The operating handle mounts directly on the front face of the switch body for in-cabinet (internal) operation, making it ideal for compact enclosures where the operator works inside the panel. A rotary double-break contact design and visible ON/OFF contact window give installers a clear, safe way to confirm isolation status before servicing downstream equipment.
Free Quote NowKey Features
- Rated current 100A–250A, rated insulation voltage 1000V DC
- Utilization category DC-21B/PV2, suitable for load-break isolation without short-circuit protection
- Visible contact window for safe visual verification of switch position
- Independent arc-quenching chamber enables on-load switching and longer electrical life
- Built-in permanent magnet for polarity-free magnetic arc blow-out and fast arc extinction
- Modular design (operating mechanism, handle, contact block)
- Lockable handle for maintenance safety (LOTO compatible)
Application
- Main DC isolation in 1000V photovoltaic combiner boxes
- In-cabinet maintenance disconnect for commercial solar inverters
- Battery cabinet and DC bus isolation
- DC charging equipment power-module isolation
- High-voltage DC distribution in data centers
- Industrial DC systems used in electroplating, electrolysis, and marine equipment
- Maintenance isolation in rail transit DC auxiliary or traction power equipment
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