Product Description
Engineered for North American production workflows, the PFLS-1BK-S120M40A delivers the innovation that sets PowerFit apart: a 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 quick disconnection and reconnection of de-energized circuits, which suits fast-paced touring and event production. NEC-compliant black phase marking ensures instant visual identification on crowded stage decks, while the robust 400A design handles everything from monitor systems to main power distribution without compromise.
Key Features
- Innovative Key-Release Pin: The key-release 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 x 1.5 cable gland with rubber bushing guarantees ingress protection in outdoor and damp conditions
- 400A Rating: rated 400A continuous with 120mm² cable
- Not for current interruption: connect and disconnect only when the circuit is de-energized
Certifications & Standards
- TÜV (Certificate: 1111322264)
- 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 rated
- Voltage Range: 1000V AC/DC (max)
- Cable Compatibility: M40 x 1.5 gland accommodates cables with 22 to 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
- Phase Marking Standard: NEC (North America)
Phase / Wire Color Convention
Frequently Asked Questions
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 key-release pin that enables tool-free disconnection. The push-and-twist mechanism secures the connection during operation while allowing rapid uncoupling when needed.
What electrical performance does PFLS-1BK-S120M40A deliver?
PFLS-1BK-S120M40A is rated for 400 amperes continuous with 120mm² cable. The maximum voltage rating is 1000V AC or 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 TÜV Rheinland certified to IEC 61984 (ID 1111322264) under Type Approval, Safety, and Regular Production Surveillance categories. It also holds CB and UKCA certificates, and carries CE marking, RoHS compliance (Restriction of Hazardous Substances), and REACH compliance. The housing material achieves a UL94-V0 flammability rating, which is the top rating in the UL94 vertical burn (V) series, meaning the material self-extinguishes within 10 seconds with no flaming drips. The key-release pin mechanism has been certified as part of the TÜV 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 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 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/DC voltage rating exceeds the typical 600V maximum of traditional alternatives. These features, combined with TÜV Rheinland certification and the phase-encoded black housing for L1 identification, make PowerFit a generation ahead of traditional designs.