Junction Box features 1,000 V UL rating.

Press Release Summary:

Available in 10 and 12 A versions, Westlake Junction Box for crystalline modules features flat design, which enables it to be installed directly under module frame. Module's horizontal contact ribbons are connected to contact plates of junction box by welding, spring clips, or soldering. Using PPE polymer enclosure materials, box resists penetration by water, dust, and salt spray. Protective lid geometry prevents kinking of cable at bush outlet, ensuring water-tightness of cable glands.

Original Press Release:

Multi-Contact's Westlake Junction Box 1000V UL Recognized

1000V UL Recognized

WINDSOR, CA - The Westlake junction box from Multi-Contact USA, a leading manufacturer of precision electrical and electronic connectors, has been UL recognized for a rated voltage of 1000V. This new quality and safety milestone means that the box is no longer limited to the conventional 600V, placing it among only a handful of junction boxes on the market with this rating.

A compact junction box for crystalline modules, the Westlake features flat design, which enables it to be installed directly under the module frame. This eliminates the need to bend over the ribbon connectors, reducing module complexity and copper use. The module's horizontal contact ribbons are simply connected to the contact plates of the junction box by welding, spring clips or soldering. The box is fixed to the PV module using conventional RTV, but does come preassembled with PSA fixturing tape strips. There is no need to insulate the ribbons from the back of the cell, no crossing of the ribbons in the module, and no "threading" of the ribbons through an insulation pad.

The highly durable Westlake is also equipped to withstand harsh environments. It resists penetration by water (both water jets and temporary immersion), dust and salt spray, increasing flexibility with regard to where the box can be installed and making it ideally suited for PV installations in coastal areas. Use of PPE polymer enclosure materials ensures excellent survivability in harsh environments. Protective lid geometry prevents kinking of the cable at the bush outlet, ensuring the long-term water-tightness of the cable glands.

In addition to simplified installation and exceptional durability, the 1000V UL recognized Westlake offers a number of advantages over other junction boxes:
  • High flexibility due to a choice of terminations (welding, clips, soldering)
  • Best possible utilization of the available connection space
  • Assembly with MC4PLUS (next generation)
  • Compatible with MC4
  • Available in 10A and 12A versions
  • Genuine MC quality


    Christian España

    Sales and Marketing Manager, North America

    (707) 838-0530


    About Multi-Contact USA

    Multi-Contact is a leading manufacturer of electrical connectors and contact systems, providing innovative solutions for demanding applications. We develop, manufacture and distribute a broad range of quality standard products and customized solutions with outstanding characteristics. For more information, visit www.multi-contact-usa.com.

    Contact This Company

  • All Topics