Product Description
Overview
North American three-phase power systems require neutral conductor connections that deliver 400 A continuous current while balancing electrical loads across multiple phase circuits and ensuring voltage stability in industrial and commercial facility distribution infrastructure. The PowerFit 400 A Panel Drain connector in white (Neutral NW - NEC) provides the enclosure-mount architecture for neutral distribution in North American manufacturing plants, server farms, utility substations, and switchboards, ensuring color-coded compliance with NEC (National Electrical Code) standards where white identifies the neutral conductor. Operating at 400 A continuous with silver-plated brass contacts rated for 500 mating cycles, this connector delivers the patent key-release pin for safe maintenance disconnection and plastic end cap protection, completing the critical return current paths that balance three-phase power distribution systems.
Key Features
- 400 A continuous current rating at 120 mm² cable; 660 A at 240 mm² cable for North American three-phase neutral distribution
- Fesource interface design ensures secure mating with Panel Source neutral connectors in North American multi-phase cabinets
- M12 threaded post with brass nut and spring washer provides reliable fastening for permanent neutral connections
- Four diameter 5.5 mm fixing holes (42 mm x 42 mm cut-out) accommodate North American electrical cabinet standards
- Patent key-release pin enables safe disconnection of neutral return paths during equipment servicing without tools
- Plastic end cap over drain interface provides IP 2X finger protection in high-density North American distribution centers
- Push-and-twist locking mechanism prevents vibration-induced separation of critical neutral conductors
- Silver-plated brass contact delivers 0.1 mOhms contact resistance, minimizing neutral point impedance and voltage imbalance
- Non-conductive UL94-V0 thermoplastic housing meets North American electrical safety standards for neutral conductors
- IP67 rating while mated protects neutral connections against moisture and dust ingress in industrial facilities
- Maximum nut torque: 12 to 14 N/meter ensures secure mounting without risk of connector rework
- White color codes as Neutral (N) under North American electrical standards (NEC / NFPA 70)
Standards
TÜV Rheinland certified (ID 1111303479) for North American three-phase system compliance; CE marking for international distribution to North American facilities; RoHS and REACH compliant for environmental responsibility in neutral conductor systems; UL94-V0 flame retardancy rating for North American industrial facility safety; IP67 rating (dust-tight, temporary submersion protection) suitable for indoor North American multi-phase installations; 1000 V AC / 1500 V DC maximum operating voltage; 4500 V AC dielectric test; Short circuit rating: Up to 35.5 kA; insulation resistance greater than 5000 MOhms at 500 V AC; Working temperature range: 45 to 85 °C - stable across North American climate zones. Match standards and compliance requirements to the local electrical code before installation.
Applications
Suitable for north American industrial manufacturing facility three-phase neutral bus distribution systems, data center and co-location facility uninterruptible power supply (UPS) neutral return infrastructure, utility substation step-down transformer neutral grounding interconnection systems, hospital and healthcare facility three-phase electrical distribution neutral conductor systems, high-tech manufacturing and semiconductor fabrication facility neutral distribution, commercial building complex multi-panel switchboard neutral coordination systems, and generator paralleling switchboard neutral ground interconnection for commercial and industrial backup power.
Compatibility
The PowerFit 400 A Panel Drain connector is compatible with major brands of single-pole power connector systems used in North American three-phase electrical infrastructure. Its M12 threaded post interface and push-and-twist mating mechanism follow standardized connection geometry across certified suppliers. Verify that your Panel Source neutral connector is rated for continuous neutral current flow and matches your facility three-phase distribution specifications. The white color housing complies with NEC (National Electrical Code) neutral identification standards and facilitates seamless integration with North American electrical systems.
Phase / Wire Color Convention
| Region | L1 | L2 | L3 | N | Ground |
|---|---|---|---|---|---|
| NA 120/208 V 1 | Green / G-Y | ||||
| NA 277/480 V 2 | Green / G-Y | ||||
| IEC 60446 3 | Green-Yellow | ||||
| AU/NZ Legacy 4 | Green-Yellow | ||||
| China 5 | Green-Yellow |
1 North America 120/208 V (NEMA / NEC) 2 North America 277/480 V (NEMA / NEC) 3 Europe, UK, Australia (current IEC 60446)
4 Australia / New Zealand legacy (pre-IEC) 5 China (GB 50303) G-Y = Green-Yellow (earth/ground)
Frequently Asked Questions
What is PFPD-NW and where is it permanently installed?
PFPD-NW is a KUPO PowerFit 400 A panel drain connector with a white housing, designated for the Neutral (N) conductor under North America (NEC) conventions. Mounted permanently in enclosures and distribution boxes, it serves as the final destination in the PowerFit electric direction flow, where incoming power from Line Source connectors enters the downstream equipment. The four-point flange mount and M12 threaded post ensure vibration-resistant installation. It is commonly deployed in agricultural and greenhouse operation applications. Agricultural power distribution faces moisture from irrigation, fertilizer chemicals, temperature extremes from greenhouse heating, and often rural locations far from electrical supply houses.
What are the electrical specifications of PFPD-NW for panel installations?
PFPD-NW is rated for 400 amperes continuous with 120 mm² cable, scaling to 660 amperes with 240 mm² cable. The maximum voltage rating is 1000 V AC or 1500 V DC. The silver-plated brass contact achieves a contact resistance of just 0.1 mOhms, significantly reducing resistive heating compared to plain brass contacts at sustained high-current loads. This low resistance is particularly important for N circuits carrying continuous neutral current.
How does the white color coding on PFPD-NW prevent neutral-phase confusion?
White identifies the Neutral conductor under North American NEC conventions. White is universally recognized across the USA and Canada as neutral, and using any other color for neutral in NEC-governed installations typically requires special marking or approval. On the Panel Drain, the white color is visible on the connector face that protrudes from the enclosure panel. When multiple PowerFit connectors are mounted side by side in a distribution box, the color-coded faces create a clear visual map of the phase layout for incoming connections. A dedicated white PowerFit connector for the neutral return path eliminates guesswork in three-phase-plus-neutral distribution systems.
What certifications make PFPD-NW suitable for permanent installation?
PFPD-NW is TUV Rheinland certified (ID 1111303479) under Type Approval, Safety, and Regular Production Surveillance categories. It also carries CE marking, RoHS compliance (Restriction of Hazardous Substances), and REACH compliance. The housing material achieves a UL94-V0 flammability rating, which is the highest classification for vertical flame resistance in plastics, meaning the material self-extinguishes within 10 seconds with no flaming drips. For permanent installations, the IP 2X finger protection prevents accidental contact with live parts when the connector face is exposed, and the four-point flange mount exceeds mechanical retention requirements.
What equipment and enclosures is PFPD-NW designed to mount in?
PowerFit connectors are designed to be compatible with major brands of single-pole power connector. The silicone O-ring seals against irrigation moisture, the thermoplastic housing resists agricultural chemical exposure, and the push-and-twist mechanism does not require specialized tools that might not be available in remote locations. For N circuits using North America (NEC) color conventions, the white PFPD-NW ensures that phase identification remains consistent when mixing PowerFit connectors with existing inventory.
How is PFPD-NW installed in a power distribution enclosure?
Installing PFPD-NW requires a 42 x 42 mm cutout in the enclosure panel. The connector mounts through four 5.5 mm fixing holes on its flange, distributing clamping force evenly for vibration resistance. The M12 threaded post accepts the brass nut and washer, tightened to a maximum of 12 to 14 N/m. IP 2X finger protection is built into the connector face, preventing accidental contact with live parts when no mating connector is inserted. A plastic end cap protects the contacts during storage and transport. The Panel Drain has a 55.0 mm flange width and 72.2 mm total depth, with a 37.0 mm body diameter. The flange provides a generous mounting surface for secure enclosure attachment.