Product Description
Safety and reliability converge in the PFLD-2R-S120M40A, a 400A single-pole line drain connector designed to protect critical power distribution systems. This inline female connector delivers sealed, secure connections through its push-and-twist mechanism while maintaining IP67-rated protection against environmental contaminants. The non-conductive, flame-retardant housing meets UL94-V0 standards, providing essential fire safety in installations where personnel proximity and equipment density demand superior performance. Rated for up to 1000 volts AC or DC, this connector carries up to 400 amperes.
Key Features
- IP67-rated silicone O-ring sealing prevents dust and moisture ingress when mated
- Flame-retardant housing (UL94-V0) provides critical fire safety protection
- Non-conductive thermoplastic body eliminates leakage current pathways
- Silver-plated brass contacts deliver measurable conductivity: contact resistance rated at 0.1 milliohms
- Current rating: 400A with 120mm² cable
- M40 by 1.5-millimeter cable gland with dual sealing bushings (22-millimeter and 33-millimeter inside diameter)
- Ergonomic rubber grip increases safety during mating operations and reduces connection errors
- Set screw contact requires 10.5 newton-meters minimum torque to prevent loosening under vibration
- Push-and-twist assembly - no special tools or fixtures needed in the field
- Not for current interruption: connect and disconnect only when the circuit is de-energized
Certifications & Standards
- TÜV Rheinland certification (ID: 1111322264), independent third-party validation
- CE marking for European market compliance
- RoHS compliance restricts hazardous substances
- REACH compliance ensures material traceability
- UL94-V0 flame rating provides fire safety assurance
Applications
The PFLD-2R-S120M40A excels in grid-tied solar systems, energy storage installations, industrial switchgear, and backup power systems where safety certification and environmental sealing are non-negotiable. The 500 mating cycle rating supports installation and maintenance workflows, while the sealed design prevents costly corrosion and equipment shutdown in humid or outdoor environments.
Compatibility
This connector is compatible with major brands of single-pole power connectors, enabling system integrators to specify KUPO connectors across mixed-manufacturer architectures. The push-and-twist interface conforms to established industry standards, ensuring reliable mating with existing inventory and field-proven components.
Phase / Wire Color Convention
Frequently Asked Questions
What is the PFLD-2R-S120M40A and what role does it play in a PowerFit system?
PFLD-2R-S120M40A is a KUPO PowerFit 400A line drain connector with a red housing, identifying Line 2 (L2) under North America (NEC) conventions. As the drain side of an inline cable connection, it receives the mating source contact and provides a sealed, IP67-rated junction when coupled. The red housing enables instant visual identification of the L2 conductor across cable runs.
How much current can PFLD-2R-S120M40A safely handle in continuous operation?
PFLD-2R-S120M40A is rated for 400 amperes continuous with 120mm² cable. The maximum voltage rating is 1000V AC or DC. The insulation resistance exceeds 5000 megaohms at 500V AC, and the test voltage rating of 4500V AC provides substantial safety margin. Its short-time withstand rating is 16 kA for 1 second.
What does the red housing on PFLD-2R-S120M40A represent under North America (NEC) standards?
Red marks Line 2 (L2) under North American NEC conventions. In a standard three-phase system, the color sequence is black (L1), red (L2), blue (L3). Red L2 is one of the most commonly ordered phase variants for US and Canadian power distribution, appearing in virtually every multi-phase temporary power installation. On the Line Drain connector, the red housing is visible along the full 190mm body length, making L2 identification easy even when cables are bundled tightly. The ergonomic rubber grip section also carries the color, so technicians can identify the phase while handling the connector. Red is one of the most visually distinctive colors on a busy event site, helping crews quickly trace the second phase conductor even from a distance.
How is PFLD-2R-S120M40A certified for professional use?
PFLD-2R-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 silicone O-ring seal contributes to the IP67 rating when mated, meaning the connection is fully protected against dust ingress and temporary immersion in water up to 1 meter for 30 minutes.
Can PFLD-2R-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 high-impact thermoplastic housing absorbs punishment, the IP67 seal protects against dust ingress (the '6' in IP67 means dust-tight), and the M40 cable gland secures cables against pull-out. For L2 circuits using North America (NEC) color conventions, the red PFLD-2R-S120M40A ensures that phase identification remains consistent when mixing PowerFit connectors with existing inventory.