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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-400F11K 400A 2 Pole AC Switch Disconnector Compact Panel-Mount Isolator with Front Handle for Single-Phase & DC-Link Power Circuits
The UKP-400F11K is a 2-pole, 400A rated AC switch-disconnector purpose-built for panel/base mounting where a two-pole isolation point is required — typically single-phase power feeds, phase-plus-neutral circuits, or paired-conductor applications within larger three-phase systems.
Like the rest of the UKP-400 platform, it uses a base/screw mount fixing method for permanent cabinet installation and features a front-mounted operating handle designed for in-cabinet (indoor) actuation. The 2-pole layout makes it a compact, space-efficient choice for smaller enclosures or for use as a secondary/branch isolator within a larger switchboard, sitting alongside 3-pole or 4-pole devices without requiring extra panel depth.
The switch retains the full UKP-400 platform performance: a spring-charged quick-make/quick-break mechanism for safe on-load switching, a visible contact-position viewing window for confirmed isolation status, and full-frame current handling up to 400A. It is intended for applications that do not require built-in overcurrent or short-circuit protection, functioning purely as a manual isolation and load-switching device.
Free Quote NowKey Features
- 2-pole configuration, compact footprint ideal for single-phase or paired-conductor circuits
- 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
- Rated short-circuit making capacity 30kA
- Base/screw panel mount for fixed installation
- Front-face mounted handle, indoor cabinet operation
- Independent spring-energy quick-make/quick-break mechanism
- Transparent contact position viewing window
- Rated for on-load (live) switching
- Space-saving 2-pole design suitable for compact enclosures
- CE, LVD, CB, SEMKO certified
Application
- Isolation switch for single-phase power feeds in distribution panels
- Secondary/branch circuit isolator within larger three-phase switchboards
- Auxiliary supply disconnect for control transformers, lighting circuits, or heating loads
- Two-conductor isolation point in motor and VFD auxiliary control circuits
- Compact panel space applications in industrial control cabinets
- Residential and commercial distribution boxes requiring a two-pole main or branch isolator
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