PFLS-NBK-S120M40A – PowerFit 400A Line Source Connector (N), Black
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-NBK-S120M40A is a 400A inline cable connector for neutral (N) distribution, delivering regional compliance for Australian (AS/NZS 3000) and UK (old standard) electrical systems where black identifies the neutral return path. This Line Source connector houses the male contact and innovative patent key-release pin, enabling tool-free disconnection while maintaining a low-impedance neutral path. Engineered for industrial power systems requiring confident regional neutral identification and rapid reconfiguration.
Key Features
- The neutral function requires ultra-reliable return-path connectivity to complete three-phase current loops. Contact resistance below 0.1 milliohms and insulation integrity above 5000M Ohms ensure that neutral current balancing circuits function correctly, preventing voltage imbalances that can damage sensitive loads.
- The male contact and key-release mechanism enable deliberate, tool-free mating and unmating. In systems where neutral is shared across multiple circuits, controlled disconnection prevents accidental circuit separation and maintains system stability during maintenance.
- The source variant uses a shorter polyoxymethylene (POM) cotter pin optimized for cable-mounted operation. If maintenance or cotter pin replacement is needed, a small slotted screwdriver allows field disassembly without specialized equipment, minimizing downtime during troubleshooting.
- Rated for 400A continuous with 120mm² cable, scaling to 660A with 240mm² cable. Neutral must handle up to 100% of phase current in unbalanced three-phase systems; this connector is sized for full-phase amperage to prevent voltage rise on the neutral return.
Certifications & Standards
- Black is the defined neutral color under Australian (AS/NZS 3000) and UK legacy standards. This connector provides unambiguous neutral identification within these regional frameworks, eliminating confusion in retrofitted or multi-regional installations and ensuring correct neutral sequencing.
- TÜV Rheinland certified (ID 1111303479), CE marked, RoHS, and REACH compliant. Meets Australian AS/NZS 3000 and UK regulations for industrial electrical installations and distribution systems.
Applications
- Australian industrial facilities requiring AS/NZS 3000 neutral compliance
- UK installations with legacy black-neutral color schemes (retrofits and upgrades)
- Three-phase power distribution centers with unbalanced load requirements
- High-cycle mating environments (500+ cycles) requiring flexible neutral reconfiguration
- Cable-to-cable neutral handoff in modular power systems
- Outdoor installations with IP67 sealed mating protection
Compatibility
The PFLS-NBK-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-NBK-S120M40A FAQ
What is the purpose of PFLS-NBK-S120M40A in a PowerFit distribution setup?
PFLS-NBK-S120M40A is a KUPO PowerFit 400A line source connector with a black housing, designated for the Neutral (N) conductor under Australia and UK (Old, pre-2004) 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 touring theatrical production applications. Touring shows load in and load out of different venues on tight schedules, sometimes daily.
What are the current and voltage specifications for PFLS-NBK-S120M40A?
PFLS-NBK-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 insulation resistance exceeds 5000 megaohms at 500V AC, and the test voltage rating of 4500V AC provides substantial safety margin. The short circuit rating of up to 35.5 kiloamperes means the connector can withstand fault conditions without catastrophic failure.
Why is black used for the neutral connector PFLS-NBK-S120M40A in Australia and UK (Old, pre-2004) systems?
Black as Neutral follows Australian wiring conventions and the legacy UK color code (pre-2004 harmonization). In Australia, the standard wiring set includes black for Neutral alongside red (L1), white (L2), blue (L3), and green (Earth). On the Line Source connector, the black 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. Confusing neutral-black (Australian) with phase-black (NEC L1 or IEC L2) can create dangerous neutral-to-phase faults. Phase-encoded connectors prevent this.
Is PFLS-NBK-S120M40A independently tested and certified?
PFLS-NBK-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.
What is the assembly and disconnection process for PFLS-NBK-S120M40A?
The PFLS-NBK-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.
Can PFLS-NBK-S120M40A be integrated into an existing power distribution system?
PowerFit connectors are designed to be compatible with major brands of single-pole power connector. The key-release pin enables tool-free disconnect during strike, the push-and-twist connection engages in seconds, and the ergonomic rubber grip reduces hand fatigue during long load-in sessions involving dozens of connections. For N circuits using Australia and UK (Old, pre-2004) color conventions, the black PFLS-NBK-S120M40A ensures that phase identification remains consistent when mixing PowerFit connectors with existing inventory.
Video and Download
PFLS-NBK-S120M40A — Download Spec Sheet (PDF) ↓
