PFLS-NW-S120M40A – PowerFit 400A Line Source Connector (N), White
400A single-pole line source connector. Key-release pin, IP67, silver-plated brass contacts, TÜV certified.
- Amperage rating: 400A maximum (120mm² cable)
- Voltage rating: 1000V AC, 1500V DC maximum
- Cable: 120mm²; M40 × 1.5 gland with bushing (ID: 22mm & 33mm)
- Terminal: Double set screws, 10.5 N/meter min.
- Connection type: Push-and-twist with key release mechanism
- Connector type: Single-pole, inline, source (male contact)
- Housing: High impact-resistant thermoplastic, UL94-V0
- Contact material: Brass (silver-plated)
- IP rating: IP67 while mated
- Compatibility: Compatible with major brands of single-pole power connector
- Certifications: TÜV Rheinland (ID 1111303479), CE, RoHS, REACH
Learn more
TÜV Rheinland certified (ID 1111303479): Type Approved, Safety, Regular Production Surveillance. CE marked. RoHS and REACH compliant. Flame Class UL94-V0. IP67 rated while mated. Working temperature: 45°C to 85°C. Mating cycle: 500.
Compatible with major brands of single-pole power connector systems. The push-and-twist mating mechanism with key release pin ensures reliable connection geometry and convenient tool-free disconnection across standardized suppliers, enabling integration into existing power distribution infrastructure.
Best suited for:
Mobile power distribution for touring productions and live events, industrial plant power management, generator and UPS distribution panels, renewable energy systems, heavy machinery power supply, and wet or dust-prone environments where IP67 sealing prevents system failures.
Product Description
The PFLS-NW-S120M40A is a 400A inline cable connector for neutral (N) distribution, delivering the North American (NEC) standard white neutral identification that defines the backbone of electrical infrastructure across the United States, Canada, and Mexico. This Line Source connector houses the male contact and innovative patent key-release pin, enabling tool-free disconnection while maintaining a low-impedance neutral return path. Engineered for North American power distribution systems where neutral is the reference point for grounding, voltage balance, and system safety.
Key Features
- The neutral function is foundational: it closes the circuit loops, balances voltage across all three phases, and provides the safety ground reference. Contact resistance below 0.1 milliohms and insulation integrity above 5000M Ohms ensure minimal voltage drop on the return path, protecting sensitive equipment and maintaining power quality across the distribution network.
- The male contact and key-release mechanism enable rapid, tool-free mating and unmating. During maintenance windows, service calls, or load rebalancing, the neutral can be controlled connected and disconnected without disrupting voltage references or accidentally isolating circuits.
- The source variant uses a shorter polyoxymethylene (POM) cotter pin optimized for cable-mounted operation. If pin inspection or replacement is needed, a small slotted screwdriver allows field disassembly without special tools, enabling rapid technician response during service and maintenance.
- Rated for 400A continuous with 120mm² cable, scaling to 660A with 240mm² cable. Neutral carries up to 100% of phase current in unbalanced three-phase systems; this connector is sized for full-phase amperage to prevent neutral voltage rise and voltage imbalances that can shorten equipment lifespan.
Certifications & Standards
- White is the defined neutral color under the National Electrical Code (NEC) and is universally recognized across North American industrial and commercial installations. This connector ensures consistent neutral identification throughout the continent, maintaining compatibility with existing infrastructure and eliminating regional ambiguity.
- TÜV Rheinland certified (ID 1111303479), CE marked, RoHS, and REACH compliant. Meets NEC Article 310 (Conductors for General Wiring) color identification requirements and is compatible with North American power systems operating under NFPA 70.
Applications
- North American industrial distribution centers requiring NEC-standard neutral identification
- Data centers, utilities, and critical infrastructure with strict voltage stability requirements
- Manufacturing facilities with high-cycle reconfiguration (500+ mating cycles)
- Cable-to-cable neutral handoff in scalable and modular power distribution systems
- Three-phase systems with unbalanced loads requiring reliable return-path current handling
- Outdoor installations with IP67 sealed mating protection
- Emergency power and generator distribution with rapid neutral reconnection
Compatibility
The PFLS-NW-S120M40A mates with corresponding PFLD (Line Drain) connectors and PFPS/PFPD panel-mount variants. Compatible with major brands of single-pole power connectors. R120 reduction sleeve (brass, silver-plated) accommodates up to 16.50mm diameter wire.
Phase / Wire Color Convention
| Region | L1 | L2 | L3 | N | Ground |
|---|---|---|---|---|---|
| NA 120/208V 1 | Green / G-Y | ||||
| NA 277/480V 2 | Green / G-Y | ||||
| IEC 60446 3 | Green-Yellow | ||||
| AU/NZ Legacy 4 | Green-Yellow | ||||
| China 5 | Green-Yellow |
1 North America 120/208V (NEMA / NEC) 2 North America 277/480V (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
PFLS-NW-S120M40A FAQ
What is PFLS-NW-S120M40A and what makes it innovative?
PFLS-NW-S120M40A is a KUPO PowerFit 400A line source connector with a white housing, designated for the Neutral (N) conductor under North America (NEC) conventions. As the source side of an inline cable connection, it features the innovative patent key-release pin that enables tool-free disconnection. The push-and-twist mechanism secures the connection during operation while allowing rapid uncoupling when needed. 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 electrical performance does PFLS-NW-S120M40A deliver?
PFLS-NW-S120M40A is rated for 400 amperes continuous with 120mm2 cable, scaling to 660 amperes with 240mm2 cable. The maximum voltage rating is 1000V AC or 1500V DC. The silver-plated brass contact achieves a contact resistance of just 0.1 milliohms, 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.
Why is white used for the neutral connector PFLS-NW-S120M40A in North America (NEC) systems?
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 Line Source connector, the white housing wraps the 170mm body including the area around the key-release mechanism. This means the phase is identifiable even during the push-and-twist connection process, reducing the chance of connecting to the wrong N circuit. A dedicated white PowerFit connector for the neutral return path eliminates guesswork in three-phase-plus-neutral distribution systems.
What safety certifications apply to PFLS-NW-S120M40A?
PFLS-NW-S120M40A 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. The key-release pin mechanism has been certified as part of the TUV evaluation, ensuring that the disconnect feature meets the same safety standards as the connection itself.
How does the key-release mechanism work on PFLS-NW-S120M40A?
The PFLS-NW-S120M40A features the innovative PowerFit push-and-twist connection. To connect, align the connector and push while twisting until it locks. To disconnect, the patent key-release pin enables tool-free uncoupling. Simply press the release and twist to separate. If needed, a small slotted screwdriver can assist with the release. For cable termination, the process follows the same steps as other PowerFit line connectors: strip 33mm of cable jacket, apply the reduction sleeve, tighten set screws to 10.5 N/m minimum, and secure the M40 cable gland. Uses the shorter cotter pin variant (vs the longer pin in Line Drain). The shorter pin accommodates the key-release mechanism. Never reuse cotter pins.
How does PFLS-NW-S120M40A compare to traditional single-pole power connectors?
PFLS-NW-S120M40A offers several meaningful improvements over conventional single-pole power connectors: the 1000V AC / 1500V DC voltage rating exceeds the typical 600V maximum of traditional alternatives; silver-plated brass contacts deliver lower contact resistance (0.1 milliohms) than plain brass; the integrated M40 cable gland with sealing bushing provides cable strain relief and environmental protection in a single assembly. These features, combined with TUV Rheinland certification and the phase-encoded white housing for N identification, make PowerFit a generation ahead of traditional designs.
Video and Download
PFLS-NW-S120M40A — Download Spec Sheet (PDF) ↓
