PFLS-3BL-S120M40A – PowerFit 400A Line Source Connector (L3), Blue
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-3BL-S120M40A is a 400A inline cable connector for L3 (Line 3) phase distribution, delivering universal blue-phase recognition across North American (NEC), UK, and Australian electrical standards. This Line Source connector houses the male contact and innovative patent key-release pin, enabling tool-free disconnection via push-and-twist engagement. Designed for industrial power systems requiring reliable, code-compliant phase identification.
Key Features
- The integrated male contact and patent key-release mechanism enable rapid, repeatable mating and unmating without dedicated tools. Simply push, twist, and release—the key pin disengages the connector cleanly on demand.
- The source variant uses a shorter polyoxymethylene (POM) cotter pin optimized for cable-mounted operation. If pin replacement or maintenance is needed, a small slotted screwdriver allows field disassembly without specialized equipment.
- Rated for 400A continuous with 120mm² cable; scales to 660A with 240mm² cable. Contact resistance remains below 0.1 milliohms across the full amperage range.
- Silicone O-ring and thermoplastic housing deliver IP67 protection when properly mated, protecting equipment in outdoor and high-moisture environments.
Certifications & Standards
- TÜV Rheinland certified (ID 1111303479), CE marked, RoHS, and REACH compliant. UL94-V0 flammability rating ensures safe operation in critical industrial environments.
Applications
- Industrial distribution centers requiring multi-regional compliance (NEC + UK + AU)
- Modular power systems with hot-swap L3 phase requirements
- Outdoor and weatherproofed installations (IP67 sealed)
- High-cycle mating environments (500-cycle rated)
- Cable-to-cable power transfer with standardized phase handoff
Compatibility
The PFLS-3BL-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-3BL-S120M40A FAQ
Why was PFLS-3BL-S120M40A designed with a key-release mechanism?
PFLS-3BL-S120M40A is a KUPO PowerFit 400A line source connector with a blue housing, identifying Line 3 (L3) under Multiple conventions (NEC, Australian, UK Old) 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 emergency and disaster response applications. Emergency power deployment happens in the worst possible conditions: flooded areas, debris fields, extreme weather.
What are the current and voltage specifications for PFLS-3BL-S120M40A?
PFLS-3BL-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 choose the blue L3 variant (PFLS-3BL-S120M40A) for your installation?
Blue as L3 enjoys unusually broad cross-convention agreement. It represents L3 in North American NEC (black/red/blue), Australian (red/white/blue), and old UK (red/yellow/blue) standards. This makes blue L3 one of the most universally understood phase colors in the world. On the Line Source connector, the blue 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 L3 circuit. The dual identity of blue (L3 in NEC/Australian vs Neutral in IEC) makes proper phase-encoded labeling essential on international projects.
Is PFLS-3BL-S120M40A independently tested and certified?
PFLS-3BL-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.
Can PFLS-3BL-S120M40A be integrated into an existing power distribution system?
PowerFit connectors are designed to be compatible with major brands of single-pole power connector. Color-coded phase identification reduces the training needed for correct connection, the push-and-twist mechanism is intuitive even under stress, and IP67 protection means the connectors function in standing water. For L3 circuits using Multiple conventions (NEC, Australian, UK Old) color conventions, the blue PFLS-3BL-S120M40A ensures that phase identification remains consistent when mixing PowerFit connectors with existing inventory.
Video and Download
PFLS-3BL-S120M40A — Download Spec Sheet (PDF) ↓
