PFLS-EGN-S120M40A – PowerFit 400A Line Source Connector (PE), Green
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-EGN-S120M40A is a 400A inline cable connector for protective earth (PE / ground) distribution, delivering the unambiguous safety-critical function that universal green coloring guarantees across all electrical standards. This Line Source connector houses the male contact and patent key-release pin, enabling tool-free disconnection while maintaining a reliable, low-resistance ground path. Earth is a life-safety function—this connector ensures it is installed, mated, and maintained with confidence.
Key Features
- Green (or green-with-yellow stripe) denotes protective earth across every major electrical convention: IEC, NEC, UK, Australia, and beyond. This universal convention eliminates any possibility of earth-phase confusion, ensuring that every technician worldwide recognizes this connector's critical safety function.
- The earth connector completes the fault-current path that protects personnel and equipment. Low contact resistance (0.1 milliohms) and high insulation integrity (>5000M Ohms) ensure that the ground path remains reliable under fault conditions, allowing protective devices to operate instantaneously.
- The male contact and key-release mechanism enable deliberate, controlled disconnection without tools. When performing maintenance or equipment shutdown, the earth connection is released only when explicitly commanded, preventing inadvertent loss of ground protection.
- The source variant uses a shorter polyoxymethylene (POM) cotter pin optimized for cable-mounted operation. Field disassembly with a small slotted screwdriver allows inspection and maintenance of the earth contact without specialized tools, ensuring the ground path integrity during commissioning and troubleshooting.
- Rated for 400A continuous with 120mm² cable, scaling to 660A with 240mm² cable. Fault-current capacity (35.5kA short circuit) ensures the earth contact can safely dissipate fault energy without melting or disconnecting.
Certifications & Standards
- TÜV Rheinland certified (ID 1111303479), CE marked, RoHS, and REACH compliant. Meets all international requirements for protective earth circuits in machinery, industrial control, and power distribution systems.
Applications
- Personnel Protection: Industrial distribution centers, renewable energy systems, and heavy machinery requiring fault-current paths
- Equipment Safety: UPS systems, power conditioning, and critical load centers
- Outdoor Installation: IP67 sealing protects ground circuits in weather-exposed environments
- High-Cycle Environments: 500-cycle rated for frequent maintenance and reconfigurations
- Emergency Shutdown Systems: Reliable earth disconnection during controlled power-down procedures
- Renewable Energy: Solar and wind installations requiring robust ground paths to earth rods or grids
Compatibility
The PFLS-EGN-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 for large-gauge earth conductors.
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-EGN-S120M40A FAQ
How does PFLS-EGN-S120M40A improve on traditional single-pole power connectors?
PFLS-EGN-S120M40A is a KUPO PowerFit 400A line source connector with a green housing, designated for the Protective Earth (PE) conductor. 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 mining and tunneling applications. Underground mining and tunnel construction require power distribution in confined, humid, dusty environments where safety standards are especially stringent and equipment must withstand harsh mechanical treatment.
What electrical performance does PFLS-EGN-S120M40A deliver?
PFLS-EGN-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 PE circuits carrying continuous earth current.
What does the green housing on PFLS-EGN-S120M40A signify and why does it matter?
Green identifies the Protective Earth (PE) conductor across virtually every international standard: NEC, IEC, Australian, old UK, and Chinese GB. Some regions specify green/yellow striped, but solid green is universally recognized as earth ground. Ground conductor integrity is the most critical safety element in any power distribution system. On the Line Source connector, the green 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 PE circuit. A distinct green connector ensures the safety earth is never confused with a current-carrying phase or neutral conductor. This is non-negotiable for personnel safety and equipment protection.
What safety certifications apply to PFLS-EGN-S120M40A?
PFLS-EGN-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.
Is PFLS-EGN-S120M40A compatible with single-pole connectors from other manufacturers?
PowerFit connectors are designed to be compatible with major brands of single-pole power connector. IP67 dust-tight and waterproof protection is critical underground, the 35.5 kA short circuit rating provides safety margin in high-fault-current mining distribution, and the non-conductive housing eliminates accidental current paths. For PE circuits using Universal (all regions) color conventions, the green PFLS-EGN-S120M40A ensures that phase identification remains consistent when mixing PowerFit connectors with existing inventory.
How does the key-release mechanism work on PFLS-EGN-S120M40A?
The PFLS-EGN-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.
Video and Download
PFLS-EGN-S120M40A — Download Spec Sheet (PDF) ↓
