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| Model | UKP-250 | UKP-315 | UKP-400 |
| Number of Poles | 3P / 4P | 3P / 4P | 3P / 4P |
| Rated Current Ie (A) | 125–250 | 275–315 | 250–400 |
| 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 2500 | Up to 3150 | Up to 4000 |
| Rated Breaking Capacity (A) | Up to 2000 | Up to 2520 | Up to 3200 |
| Rated Short‑Time Withstand Current (kA) 1000 V / 0.15 s | 15 | 31 | 31 |
| Rated Short‑Time Withstand Current (kA) 1000 V / 0.25 s | 15 | 24 | 24 |
| Rated Short‑Time Withstand Current (kA) 1000 V / 1 s | 8 | 15 | 15 |
| Rated Short‑Circuit Making Capacity (kA) | 16 | 30 | 30 |
| Operating Torque (N·m) | 7 | 7 | 16 |
UKP-400S03K 400A 3 Pole AC Switch Disconnector Side-Mounted Handle Panel Isolator for Space-Constrained Cabinet Layouts
The UKP-400S03K is a 3-pole, 400A rated AC switch-disconnector built on the same base/screw panel-mount platform as the standard UKP-400 series, but with one key layout difference: the operating handle is mounted on the side of the switch body rather than the front face.
This side-handle configuration is designed for indoor cabinet installations where front-panel space is limited, where the switch needs to sit close to an enclosure wall, or where panel layout constraints make a front-facing handle impractical to access or route safely.
Electrically and mechanically, it shares the full performance profile of the UKP-400 platform: on-load switching capability, a spring-stored energy mechanism for quick-make/quick-break operation, a visible contact position window for confirmed isolation.
For panel builders and electrical designers working with tight cabinet layouts, side-panel wiring routes, or stacked device arrangements, the side-mounted handle offers an alternative ergonomic and spatial solution without compromising on switching performance or safety compliance.
Free Quote NowKey Features
- 4-pole configuration providing full three-phase-plus-neutral (3P+N) isolation
- Rated operational current (Ie) selectable within the 250A–400A frame current range
- Rated insulation voltage 1000V, dielectric withstand 10kV, rated impulse withstand voltage 12kV
- Rated making capacity up to 4000A, rated breaking capacity up to 3200A
- Rated short-time withstand current: 31kA (0.15s), 24kA (0.25s), 15kA (1s) at 1000V
- Base/screw panel mount for permanent cabinet installation
- Front-mounted operating handle, indoor cabinet operation
- Independent spring-energy quick-make/quick-break switching action
- Transparent viewing window for direct contact position verification
- On-load switching capability for all four poles
- Suitable for neutral-switching requirements in TN-S/TT systems
- CE, LVD, CB, SEMKO certified
- Functional alternative to imported OT-series style 4-pole switch disconnectors
Application
- 3-pole configuration for three-phase power circuits
- Side-mounted operating handle (as opposed to front-mounted), for lateral cabinet actuation
- Rated operational current (Ie) selectable within the 250A–400A frame current range
- Rated insulation voltage 1000V, dielectric withstand 10kV, rated impulse withstand voltage 12kV
- Rated making capacity up to 4000A, rated breaking capacity up to 3200A
- Rated short-time withstand current: 31kA (0.15s), 24kA (0.25s), 15kA (1s) at 1000V
- Base/screw panel mount for fixed cabinet installation
- Independent spring-energy quick-make/quick-break mechanism
- Transparent contact position viewing window
- On-load (live) switching capability
- Space-optimized layout for cabinets with restricted front clearance
- CE, LVD, CB, SEMKO certified
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