PFLS-1BK-S120M40A – PowerFit 400A Line Source Connector (L1), 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
Engineered for North American production workflows, the PFLS-1BK-S120M40A delivers the innovation that sets PowerFit apart: a patent-pending key-release pin mechanism for tool-free disconnection. Where traditional connectors demand extra tools and wasted setup time, this Line Source connector's push-and-twist connection with integrated key-release allows rapid disconnect and reconnect cycles—essential for fast-paced touring and event production. NEC-compliant black phase marking ensures instant visual identification on crowded stage decks, while the robust 400A/660A dual-rated design handles everything from monitor systems to main power distribution without compromise.
Key Features
- Innovative Key-Release Pin: Patent-pending mechanism enables fast, tool-free disconnection—no screwdriver or hex key required for standard uncoupling, dramatically reducing changeover time on set
- Male Contact Design: Distinguished from Line Drain by ergonomic male contact configuration paired with push-and-twist connection for confident mating
- Brass Silver-Plated Contact: Superior conductivity and corrosion resistance for reliable signal integrity across extended touring schedules
- Durable Thermoplastic Housing: Non-conductive, high-impact-resistant material provides electrical safety and physical protection in demanding venue environments
- Ergonomic Rubber Grip: Textured surface enhances handling comfort and ensures secure grip even with gloved hands
- IP67-Rated Sealing: M40×1.5 cable gland with rubber bushing guarantees ingress protection in outdoor and damp conditions
- Dual-Rated Performance: 400A/660A rating accommodates diverse power distribution configurations
Certifications & Standards
- TÜV (Certificate: 1111303479)
- CE Marking
- RoHS Compliant
- REACH Compliant
- UL94-V0 Flame Rating
Applications
- Live Event Audio & Video Production
- Touring Sound Systems
- Stage & Lighting Power Distribution
- Concert & Festival Infrastructure
- Mobile Production Trucks
- Rental & House Power Management
- High-Current Audio Distribution
Compatibility
- Rated Amperage: 400A / 660A dual-rated
- Voltage Range: 1000V AC (max) / 1500V DC (max)
- Cable Compatibility: M40×1.5 gland accommodates cables with 22–33 mm outer diameter; reduction sleeve (R120) available for smaller cables up to 16.50 mm
- Mating Standard: Push-and-twist with key-release mechanism (IEC 60320 derivative, proprietary key-release pin)
- Phase Marking Standard: NEC (North America)
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-1BK-S120M40A FAQ
What is PFLS-1BK-S120M40A and what makes it innovative?
PFLS-1BK-S120M40A is a KUPO PowerFit 400A line source connector with a black housing, identifying Line 1 (L1) 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 outdoor music festival applications. When power cables stretch across a rain-soaked festival ground, IP67 protection is not a luxury.
What electrical performance does PFLS-1BK-S120M40A deliver?
PFLS-1BK-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 L1 circuits carrying continuous phase current.
Why choose the black L1 variant (PFLS-1BK-S120M40A) for your installation?
Under North American NEC conventions, black identifies the first line conductor (L1) in a three-phase system. It is the default phase conductor for single-phase 120V branch circuits and the standard L1 in three-phase configurations alongside red (L2) and blue (L3). Black L1 conductors carry the bulk of single-phase loads in commercial and industrial settings. 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 L1 circuit. Because black appears in multiple phase conventions worldwide, the PowerFit phase-encoded SKU system (1BK vs 2BK vs NBK) prevents dangerous cross-convention mix-ups.
What safety certifications apply to PFLS-1BK-S120M40A?
PFLS-1BK-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-1BK-S120M40A?
The PFLS-1BK-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-1BK-S120M40A compare to traditional single-pole power connectors?
PFLS-1BK-S120M40A offers several meaningful improvements over conventional single-pole power connectors: the patent key-release pin enables tool-free disconnection that traditional locking mechanisms cannot match; IP67 protection when mated provides dust-tight and waterproof sealing that most single-pole connectors lack; the 1000V AC / 1500V DC voltage rating exceeds the typical 600V maximum of traditional alternatives. These features, combined with TUV Rheinland certification and the phase-encoded black housing for L1 identification, make PowerFit a generation ahead of traditional designs.
Video and Download
PFLS-1BK-S120M40A — Download Spec Sheet (PDF) ↓
