Onamba PVU-B48-022 MC4 Solar PV Junction Box 14AWG IP67 DC600V 50 Sets

Onamba PVU-B48-022 MC4 Solar PV Junction Box 14AWG IP67 DC600V 50 Sets

The Onamba PVU-B48-022 is a photovoltaic interconnecting junction box designed for thin-film solar panel applications. Unlike conventional J-boxes that combine both positive and negative terminals in a single housing, this design uses separate individual J-boxes for the positive and negative wires, allowing the connectors to be spread apart for more flexible panel wiring layouts. This carton contains 50 complete male/female sets, each with MC4 connectors on 14AWG rated PV wire.

Specifications & What's Included

• Model: PVU-B48-022
• Connector Type: MC4
• Wire Gauge: 14AWG
• Wire Size Range: 2.0–2.5 mm²
• Cable O.D. Range: 6.2–6.6 mm
• Cable Rating (per jacket print): PV Wire, 14AWG, 90°C, Wet or Dry, 600V
• Rated Voltage: DC 600V (UL) / DC 1000V (Other)
• Max Rated Current (without diode): 10A (Other) / 20A (UL) @ 75°C
• Max Rated Current (with diode): 3.5A / 1.5A (UL) @ 75°C
• Designed For: 3.5A, 4A applications
• Diode: None
• Number of Terminals: 1
• Protection Degree: IP65 standard / IP67 with potting compound applied
• Flame Class: 5VA
• Insulation Material: PPE/PPO
• Contact Material: Brass (tin plate)
• Conformity Standard: UL1703, Certificate No. E212185
• Application Type: Thin Film Photovoltaic Solar Panel
• Quantity: Box of 50 complete sets
• Each set includes: 1 male J-box (positive), 1 female J-box (negative), attached cables, and 2 snap-in plastic covers
• Factory test report (QC inspection, all items passed) included with lot

Applications

The PVU-B48-022 junction box is used in thin-film photovoltaic solar panel manufacturing and field installation. It serves as the weatherproof termination point where the panel's output wires are connected to the external MC4 wiring harness. The separate positive and negative J-box configuration is common in thin-film module production where the panel's electrical outputs emerge at different locations, requiring individual weatherproof enclosures at each terminal rather than a single combined box. MC4 connectors are the industry-standard single-contact electrical connectors used throughout the solar industry for connecting photovoltaic strings and combiner boxes, and are compatible with the vast majority of residential, commercial, and utility-scale PV system wiring. This product is suited for solar panel manufacturers, solar EPC contractors, and field service teams maintaining or replacing junction boxes on thin-film PV installations.