Willele : A Power Distribution Block Manufacturer
Willele is a trusted manufacturer and supplier of high-quality electrical components, specializing in the design and production of UKK Power Distribution Block and Terminal Blocks. With years of professional experience, Willele is dedicated to providing reliable products that meet the most demanding standards of safety, efficiency, and durability.
Our UKK Power Distribution Block are engineered to deliver consistent and safe power distribution across a wide range of electrical systems, making them a vital choice for engineers, installers, and industrial users. Each product is crafted to ensure stable connections, easy installation, and long-lasting performance even in challenging environments.
Driven by innovation and a strong commitment to customer satisfaction, Willele continues to set the benchmark for excellence in electrical distribution technology. Whether for industrial applications or power management projects, Willele is your reliable partner for premium electrical solutions.
Compliant with Global Safety Standards
UKK POWER Distribution Block Selection Grid
UKK 80A 1-In 6-Out
Distribution Block
UKK 125A 1-In 11-Out
Distribution Block
UKK 160A 1-In 11-Out
Distribution Block
UKK 250A 1-In 11-Out
Distribution Block
UKK 400A 1-In 11-Out
Distribution Block
UKK 500A 1-In 11-Out
Distribution Block
Product Specification
Overview — UKK-80A Distribution Block (1-In, 6-Out)
The UKK-80A is a compact distribution block for branching one incoming supply into six outgoing circuits. With a transparent hinged cover for quick visual inspection and IP20 protection, it’s ideal for space-constrained control panels, lighting cabinets, HVAC controls, and OEM equipment. The housing uses flame-resistant PA66, while nickel-plated copper/brass conductors provide low contact resistance and long service life.
- Current Rating
- 85 A
- I/O Configuration
- 1 input / 6 outputs
- Input Conductor
- 1 × 6–16 mm2
- Dimensions (W × L × H)
- 30 × 69 × 49 mm
- Output Terminals
- 4 × 2.5–6 mm2; 2 × 2.5–16 mm2
- Construction
- PA66 housing; copper/brass conductors, nickel-plated
- Mounting
- DIN rail or screw fixing
- Compliance
- Rated voltage 690 V (IEC); Operating temp −30 °C to +110 °C; IP20; UL94V-0
Key Features
- Compact footprint: 30×69×49 mm saves rail and cabinet space in small panels.
- Reliable screw-clamp terminals: stable connections and a broad output size range for mixed loads.
- Hinged, transparent cover: opens for tool access and allows quick checks of conductor insertion and screw status.
- Durable materials: flame-retardant PA66 body and nickel-plated conductive parts resist heat and corrosion.
- Flexible mounting: snaps to DIN rail or secures with screws for layout flexibility.
- Color identification available: optional colored lids to simplify circuit labeling and maintenance.
Applications
- Lighting distribution and branch circuits in commercial buildings.
- HVAC control cabinets and small machinery panels.
- PLC/relay cabinets and OEM equipment where organized one-to-many routing is required.
Installation & Wiring Notes
- Verify selected conductors match the specified input/output ranges before wiring.
- Strip to the correct length and ensure the bare conductor is fully under the pressure plate.
- Tighten terminal screws to the recommended torque per your panel standard; re-check after first energization.
- Provide clearance for heat dissipation and tidy cable routing; use lid color/labels for circuit identification.
Overview — UKK-125A Distribution Block (1-In, 6-Out)
The UKK-125A bridges the gap between compact and mid-range power distribution. It branches a single feeder into six circuits and accepts a larger input conductor than the 80A model, making it a practical upgrade for machinery panels, commercial distribution cabinets, HVAC/lighting mains, and OEM equipment. A transparent hinged cover enables quick visual checks while providing IP20 touch protection, and the robust PA66 housing with nickel-plated copper/brass conductors ensures low contact resistance and long service life.
- Current Rating
- 125–150 A
- I/O Configuration
- 1 input / 6 outputs
- Input Conductor
- 1 × 10–35 mm2
- Dimensions (W × L × H)
- 29 × 77 × 46 mm
- Output Terminals
- 6 × 2.5–16 mm2
- Construction
- Flame-retardant PA66 housing; copper/brass conductive parts, nickel-plated
- Mounting
- DIN rail or screw fixing
- Compliance
- Rated voltage 690 V (IEC); Operating temp −30 °C to +110 °C; IP20; UL94V-0
Key Features
- Up-rated input capacity: accepts up to 35 mm2 on the input, suitable for heavier feeders.
- Six independent outputs: uniform 2.5–16 mm2 range simplifies branch selection and wiring.
- Hinged, transparent cover: opens for tool access and enables instant verification of conductor insertion and screw status.
- Compact depth and width: 29×77×46 mm fits neatly in crowded control cabinets.
- Durable build: PA66 body for insulation and flame resistance; nickel-plated conductors for corrosion resistance and stable conductivity.
- Flexible mounting: clips to DIN rail or mounts via screws for layout flexibility.
Applications
- Industrial control panels and distribution cabinets requiring one-to-six power branching.
- Commercial building mains split for lighting/HVAC zones.
- OEM machinery panels and PLC/relay enclosures needing organized, serviceable terminations.
Installation & Wiring Notes
- Verify conductor sizes fall within the specified input/output ranges before wiring.
- Strip to the correct length and ensure the bare conductor is fully under the pressure plate.
- Tighten terminal screws to the recommended torque per your panel standard; re-check after initial energization.
- Provide routing/clearance for heat dissipation; use lid color or labels for circuit identification and maintenance.
Overview — UKK-160A Distribution Block (1-In, 6-Out)
The UKK-160A is a mid-high current distribution block that splits one incoming feeder into six branches while maintaining a compact footprint. A transparent, hinged cover supports visual inspection and IP20 finger safety, and the flame-retardant PA66 housing with nickel-plated copper/brass conductors delivers low contact resistance and long, reliable service in industrial and commercial panels.
- Current Rating
- 160–200 A
- I/O Configuration
- 1 input / 6 outputs
- Input Conductor (options)
- 1 × 6–16 mm2 or 1 × 10–70 mm2 (model/variant)
- Dimensions (W × L × H)
- 30 × 77 × 48 mm
- Output Terminals
- 6 × 1–16 mm2
- Construction
- Flame-retardant PA66 housing; copper/brass conductive parts, nickel-plated
- Mounting
- DIN rail or screw fixing
- Compliance
- Rated voltage 690 V (IEC); Operating temp −30 °C to +110 °C; IP20; UL94V-0
Key Features
- Higher feeder capacity: input option up to 70 mm2 suits heavier mains and machine feeders.
- Six independent outputs: broad 1–16 mm2 range covers mixed branch circuits and loads.
- Hinged, transparent cover: opens for tool access and enables instant confirmation of conductor insertion and screw status.
- Robust build: PA66 body and nickel-plated conductive parts resist heat, vibration, and corrosion.
- Compact layout: space-efficient 30×77×48 mm package for crowded control cabinets.
- Flexible mounting: clips to DIN rail or bolts down with screws depending on panel layout.
Applications
- Industrial control panels and distribution cabinets requiring one-to-six branching at 160–200 A.
- OEM machinery panels, HVAC mains, and motor control circuits with mixed conductor sizes.
- Commercial and infrastructure cabinets needing organized, serviceable power routing.
Installation & Wiring Notes
- Confirm the feeder and branch conductors fit the specified ranges (see input options and outputs above).
- Strip to the correct length; fully seat the conductor beneath the pressure plate before tightening.
- Torque terminal screws to your panel standard; re-check after initial energization or vibration exposure.
- Leave routing and ventilation space; use lid colors/labels for clear circuit identification.
Overview — UKK-250A Distribution Block (1-In, 11-Out)
The UKK-250A is a high-capacity distribution block for routing one incoming feeder to eleven outgoing circuits. It balances robust current handling with a compact footprint, making it a dependable choice for industrial control panels, machinery power trunks, and commercial distribution cabinets. A transparent, hinged cover enables fast visual checks while providing IP20 touch protection. The PA66 housing and nickel-plated copper/brass conductors ensure low contact resistance and long, reliable service life.
- Current Rating
- 250–255 A
- I/O Configuration
- 1 input / 11 outputs
- Input Conductor
- 1 × 35–120 mm2
- Dimensions (W × L × H)
- 47 × 96 × 50 mm
- Output Terminals
- 2 × 6–35 mm2; 5 × 2.5–16 mm2; 4 × 2.5–10 mm2
- Construction
- Flame-retardant PA66 housing; copper/brass conductive parts, nickel-plated
- Mounting
- DIN rail or screw fixing
- Compliance
- Rated voltage 690 V (IEC); Operating temp −30 °C to +110 °C; IP20; UL94V-0
Key Features
- Eleven independent outputs: three output size groups cover diverse branch loads with minimal adapters.
- High feeder capacity: accepts up to 120 mm2 on the input for heavy mains and machine feeders.
- Hinged, transparent cover: opens for tool access and allows instant verification of conductor insertion and screw status.
- Space-efficient body: compact 47×96×50 mm package simplifies panel layout and cable routing.
- Durable materials: PA66 body for insulation and flame resistance; nickel-plated conductors resist corrosion and heat.
- Flexible installation: clips to DIN rail or bolts down with screws depending on cabinet design.
- Color identification available: optional colored lids aid circuit labeling and maintenance.
Applications
- Industrial control panels and MCC sections requiring one-to-many power branching at ~250 A.
- Commercial and infrastructure distribution cabinets with mixed conductor sizes and loads.
- OEM machinery power trunks, motor control circuits, and auxiliary distribution in automation cells.
Installation & Wiring Notes
- Confirm feeder and branch conductors fall within the specified input/output ranges.
- Strip to the correct length and ensure the bare conductor is fully under the pressure plate before tightening.
- Torque terminal screws to your panel standard; re-check after initial energization or vibration exposure.
- Maintain routing and ventilation space; use lid color/labels to simplify circuit identification.
Overview — UKK-400A Distribution Block (1-In, 11-Out)
The UKK-400A is a heavy-duty distribution block designed for reliable one-to-many power branching in industrial and commercial panels. With one input and eleven outputs spanning multiple conductor ranges, it simplifies clean, serviceable routing for mixed loads. A transparent hinged cover provides quick visual inspection and IP20 touch protection, while the flame-retardant PA66 housing and nickel-plated copper/brass conductors deliver low contact resistance and long service life.
- Current Rating
- 335 A
- I/O Configuration
- 1 input / 11 outputs
- Input Conductor
- 1 × 1–185 mm2
- Dimensions (W × L × H)
- 47 × 96 × 50 mm
- Output Terminals
- 3 × 2–25 mm2; 5 × 1–16 mm2; 4 × 4–10 mm2
- Construction
- Flame-retardant PA66 housing; copper/brass conductive parts, nickel-plated
- Mounting
- DIN rail or screw fixing
- Compliance
- Rated voltage 690 V (IEC); Operating temp −30 °C to +110 °C; IP20; UL94V-0
Key Features
- High-capacity branching: eleven individually clamped outputs in three size groups support diverse loads and wiring schemes.
- Large feeder acceptance: input up to 185 mm2 for heavier mains and machine feeders.
- Hinged, transparent cover: quick visual checks of conductor insertion and screw status; opens for easy tool access.
- Durable build: PA66 body for insulation and flame resistance; nickel-plated conductors ensure stable, low-resistance contact.
- Flexible mounting: clips to DIN rail or bolts down with screws to suit cabinet layouts.
- Color identification available: optional colored lids help organize circuits and speed maintenance.
Applications
- Industrial control panels, MCC sections, and distribution cabinets at ~335 A class.
- OEM machinery power trunks and auxiliary distribution with mixed conductor sizes.
- Commercial/infrastructure cabinets requiring organized, serviceable one-to-many routing.
Installation & Wiring Notes
- Verify feeder and branch conductors fall within the specified input/output ranges.
- Strip to the correct length; ensure the bare conductor is fully under the pressure plate before tightening.
- Tighten terminal screws to your panel standard; re-check after initial energization or vibration exposure.
- Allow space for routing and heat dissipation; use lid colors/labels for clear circuit identification.
Overview — UKK-500A Distribution Block (1-In, 11-Out)
The UKK-500A is the top-capacity model in the UKK family, engineered for heavy-duty one-to-many power branching in industrial and commercial switchgear. It combines a high-current input with eleven serviceable outputs, a transparent hinged cover for quick visual checks, and IP20 touch protection. The flame-retardant PA66 housing and nickel-plated copper/brass conductors deliver low contact resistance and long, dependable service life in demanding environments.
- Current Rating
- 500–520 A
- I/O Configuration
- 1 input / 11 outputs
- Input Conductor
- 1 × 2–215 mm2 (cable); busbar option: 3×15–8×24 mm (rectangular)
- Dimensions (W × L × H)
- 47 × 96 × 50 mm
- Output Terminals
- Multiple cavities across broad ranges up to ~2–24 mm2 (model/variant dependent; optimized for mixed branch circuits)
- Construction
- Flame-retardant PA66 housing; copper/brass conductive parts, nickel-plated
- Mounting
- DIN rail or screw fixing
- Compliance
- Rated voltage 690 V (IEC); Operating temp −30 °C to +110 °C; IP20; UL94V-0
Key Features
- Highest capacity in the range: 500–520 A rating with acceptance up to 215 mm2 cable or rectangular busbar.
- Eleven individually clamped outputs: broad conductor ranges let you mix feeder sizes and loads on one block.
- Hinged, transparent cover: quick visual verification of conductor insertion and screw status; easy tool access.
- Robust, low-resistance construction: PA66 body plus nickel-plated conductive parts for heat and corrosion resistance.
- Flexible installation: snaps to DIN rail or bolts down with screws to suit panel layouts.
- Color identification available: optional colored lids aid labeling and maintenance workflows.
Applications
- Industrial switchboards, MCCs, and distribution cabinets needing high-current one-to-many branching.
- OEM machinery power trunks, motor clusters, and auxiliary distribution in automation cells.
- Commercial and infrastructure panels where organized, serviceable routing for mixed conductor sizes is required.
Installation & Wiring Notes
- Confirm feeder and branch conductors are within specified input/output ranges; choose cable or busbar input as required.
- Strip to the proper length; fully seat the conductor beneath the pressure plate before tightening.
- Tighten terminal screws to the recommended torque per your panel standard; re-check after initial energization or vibration exposure.
- Provide cable routing and ventilation space; use lid colors/labels for clear circuit identification and maintenance.
Why Choose WILLELE ？
WILLELE designs and manufactures reliable electrical connection components for professional use. Engineers and buyers choose us for consistent build quality, practical design, and responsive service across residential, commercial, and industrial projects.
When it comes to UKK POWER Distribution Blocks, here’s what sets us apart:
- Proven Quality — Every unit is built from robust materials and passes strict in-house inspections to ensure safe, repeatable performance in the field.
- Full Coverage Range — From compact 1-in/6-out blocks to heavy-duty 1-in/11-out models (80A–500A), the lineup covers most cabinet and panel requirements.
- Installer-Friendly Design — Clear markings, secure clamping, compact footprints, and lift-up inspection covers speed installation and maintenance.
- Real Value — Long-life construction and competitive pricing help lower total cost of ownership without compromising safety or reliability.
- Responsive Support — Fast dispatch and helpful technical documentation, with a team ready to assist from selection to after-sales.
UKK POWER Distribution Block DIMENSIONS AND SIZE CHART
| PRODUCT NAME | INPUT/OUTPUT LINES | EXTERNAL DIMENSIONS (WIDTH × LENGTH × HEIGHT) | WIRING AREA |
|---|---|---|---|
| UKK80A | 1 Input 6 Output | 30 × 69 × 46 |
1 Input line: 6–16 mm2 4 Output lines: 2.5–6 mm2 2 Output lines: 2.5–16 mm2 |
| UKK125A | 1 Input 6 Output | 29 × 70 × 46 |
1 Input line (optional): 6–16 mm2 1 Input line (optional): 10–35 mm2 6 Output lines: 2.5–16 mm2 |
| UKK160A | 1 Input 6 Output | 29 × 70 × 46 |
1 Input line (optional): 6–16 mm2 1 Input line (optional): 10–70 mm2 6 Output lines: 2.5–16 mm2 |
| UKK250A | 1 Input 11 Output | 50 × 96 × 49 |
1 Input line: 35–120 mm2 2 Input lines: 6–35 mm2 5 Output lines: 2.5–16 mm2 4 Output lines: 2.5–10 mm2 |
| UKK400A | 1 Input 11 Output | 50 × 96 × 49 |
1 Input line: 95–185 mm2 2 Input lines: 6–35 mm2 5 Output lines: 2.5–16 mm2 4 Output lines: 2.5–10 mm2 |
| UKK500A | 1 Input 11 Output | 50 × 96 × 49 |
1 Input line: 3×15 mm – 8×24 mm (busbar) 2 Input lines: 6–35 mm2 5 Output lines: 2.5–16 mm2 4 Output lines: 2.5–10 mm2 |
WILLELE Excellent material selection, standard Design
Nickel-Plated Brass Conductor
High-conductivity, low-heat brass conductor block with a durable nickel finish for corrosion resistance and stable contact over time. Precision hex-socket screws provide strong clamping force, resist stripping, and stay secure under vibration.
Transparent Protective Cover
(90° Hinged)
Clear hinged cover opens to approximately 90° for easy tool access and instant visual inspection of wire seating and screw status. Provides IP20 touch safety and helps prevent accidental contact during maintenance.
PA66 Insulating, Flame-Retardant Housing
Molded PA66 enclosure delivers excellent electrical insulation, impact resistance, and solvent resistance. Flame-retardant to UL94V-0 with a wide operating range of −30 °C to +110 °C for reliability in demanding environments.
DIN Rail & Screw Mounting
Two mounting options for flexible panel layouts: quick snap-on DIN-rail installation or secure screw fixing. Different UKK sizes can be mixed on the same rail, simplifying cabinet design and future expansion.
UKK: QUICK INSTALLATION & EASY WIRING
Proper installation ensures optimal performance and safety. Follow these simple steps when wiring your UKK Distribution Block.
Prepare the correct tools. Use the specified hex screwdriver/bit and a suitable wire stripper; confirm the conductor sizes meet the model’s rating.
Strip and insert conductors. Strip to the recommended length and fully seat the bare copper into the cavity—make sure it sits completely beneath the pressure plate.
Tighten to the proper torque. Tighten the hex screws to the specified torque and perform a light pull test to verify a secure clamp on each conductor.
Finish & verify. Route wiring neatly, close the hinged cover, label circuits, and complete a final inspection before energizing.
For model-specific strip lengths and torque values, please refer to the installation manual in the Resources section of our website.
More Than a UKK POWER Distribution Block Manufacturer
We don’t just ship hardware—we help you build safer, cleaner power distribution. From early selection to on-site support, our team provides fast answers, practical engineering, and dependable delivery so your project stays on schedule.
Expert Consultation
Whether your requirement is straightforward or complex, our engineers review load, conductor sizes, I/O needs, and environment to recommend the right UKK model and accessories. We can provide drawings, datasheets, and wiring notes for quick approvals.
Product Selection Recommendations
Not sure which UKK fits? Send your rating (80A–500A), input/output, and wire ranges—we’ll confirm the exact part number, offer alternatives if needed, and return pricing and lead time (typically within 12 hours).
Logistics & Shipping Support
From export documents to carton labeling and palletization, we arrange reliable transport from our factory to your site under flexible Incoterms. You get clear ETAs, tracking, and proactive updates to keep your build moving.
Guidance & Support
Need help during installation? Our technical team can advise on strip lengths, torque values, and mounting options (DIN rail or screw). For larger projects, we can provide remote guidance or dispatch an engineer for on-site assistance.
Power Distribution Blocks — Frequently Asked Questions
What is a power distribution block and where is the UKK series used?
A power distribution block (UKK series) splits one incoming feeder into several outgoing circuits inside control panels and switchboards. UKK blocks are compact and finger-safe (IP20) with hinged transparent covers for fast visual inspection in industrial and commercial cabinets.
How do I choose the right power distribution block (UKK)?
Match three items: current rating (80A–500A), I/O (1-in/6-out or 1-in/11-out), and conductor ranges for feeder & branches. Typical picks:
- UKK-80A — 1-in/6-out; input 6–16 mm²; outputs 2.5–6 & 2.5–16 mm².
- UKK-125A — 1-in/6-out; input 10–35 mm²; outputs 6×2.5–16 mm².
- UKK-160A — 1-in/6-out; input up to 70 mm² (variant); outputs 6×1–16 mm².
- UKK-250A — 1-in/11-out; input 35–120 mm²; outputs 2×6–35, 5×2.5–16, 4×2.5–10 mm².
- UKK-400A — 1-in/11-out; input 1–185 mm²; outputs 3×2–25, 5×1–16, 4×4–10 mm².
- UKK-500A — 1-in/11-out; input 2–215 mm² (busbar 3×15–8×24 mm); outputs up to ~2–24 mm².
How do I wire a power distribution block?
Use the correct hex bit and stripper; strip to the charted length; fully seat the conductor beneath the pressure plate; tighten to the specified torque; do a light pull test; route neatly and close the cover. For model-specific strip lengths and torques, see the UKK installation manual.
What are the strip length and tightening torque?
They vary by model and cavity size. Always follow the datasheet chart. Avoid overtightening and re-check torque after first energization or vibration exposure. Need the exact chart? Contact us and we’ll send it immediately.
Which wire sizes fit each UKK power distribution block?
Quick view (see datasheets for cavity groups):
- 80A — input 6–16 mm²; outputs 2.5–6 & 2.5–16 mm²
- 125A — input 10–35 mm²; outputs 2.5–16 mm²
- 160A — input up to 70 mm² (variant); outputs 1–16 mm²
- 250A — input 35–120 mm²; outputs 6–35 / 2.5–16 / 2.5–10 mm²
- 400A — input 1–185 mm²; outputs 2–25 / 1–16 / 4–10 mm²
- 500A — input 2–215 mm² (or busbar 3×15–8×24 mm); outputs up to ~2–24 mm²
DIN rail vs screw mounting — which to use for power distribution blocks?
DIN rail gives fast installation and easy repositioning; screw mounting is better for permanent placement or high-vibration areas. UKK supports both.
Are covers color-coded? What do colors mean?
Lids are available in blue / red / yellow / green. Many users map colors to phases, voltage levels or circuit groups—keep a consistent legend in your drawings.
What materials and certifications do UKK power distribution blocks use?
Housing: PA66 (UL94V-0). Conductors: nickel-plated copper/brass. Protection: IP20. Rated voltage: up to 690 V (IEC). Operating temperature: −30 °C to +110 °C. Mounting: DIN rail or screw.
Do you offer samples? What about MOQ, pricing and lead time?
Samples: typically 3–7 business days. MOQ is flexible for standard models. Pricing & delivery depend on model, quantity and color. Send your requirements and we’ll quote with ETA—usually within 12 hours.
Contact UsWhat is the warranty?
UKK power distribution blocks carry a 3-year warranty. Each unit is tested before delivery.
Knowledge About Power Distribution Blocks
A power distribution block branches one incoming feeder to multiple outgoing circuits inside control panels and switchboards. UKK power distribution blocks add a hinged transparent cover for IP20 touch protection, making inspection fast and maintenance safer in industrial and commercial cabinets.
For a step-by-step connection workflow, see our Wiring Guide and the page-end FAQ.
- Control panels, MCC and distribution cabinets (one-to-many branching)
- Industrial machinery and OEM equipment
- HVAC controls and building automation
- Renewable energy subsystems
- Commercial buildings, data centers & telecommunications
Terminal blocks connect wires point-to-point. Power distribution blocks like the UKK series are optimized for one-to-many branching and typically support higher currents, mixed wire sizes, grouped cavities, and an IP20 hinged cover. If you’re deciding between the two, jump to our Selection Guide.
Match these factors before ordering:
- Current rating: UKK 80A / 125A / 160A / 250A / 400A / 500A
- I/O layout: 1-in/6-out (compact) or 1-in/11-out (more circuits)
- Conductor ranges: feeder & branch wire sizes must fit each cavity group
- Mounting: DIN-rail (modular) or screw fixing (permanent / high-vibration) — read about DIN rail
- Safety & materials: PA66 UL94V-0, IP20 cover, −30 °C to +110 °C
Browse models in the selection tabs: UKK-80A, UKK-125A, UKK-160A, UKK-250A, UKK-400A, UKK-500A.
- Strip to the specified length and fully seat the conductor beneath the pressure plate
- Tighten to the recommended torque; perform a light pull test
- Use the correct cavity size; don’t double-up unless allowed by the datasheet
- Label circuits, route neatly, and close the cover for IP20 safety
- Re-check tightness after first energization or vibration exposure