EZ Solar Mamba 4x4x2 Polycarbonate Junction Box

The EZ Solar Mamba 4x4x2 (JB-M.442+) is a polycarbonate junction box built for rooftop solar PV combiner and disconnect applications. Rated for 1500 VDC and 80 A, it suits installers needing a durable, UV-rated enclosure that performs across extreme temperatures. Its Type 3R rating and compact 5.1″ x 5.1″ x 2.3″ footprint make it ideal for weather-exposed roof mounting on slopes from 2 to 90 degrees.

Key Features:

• Voltage rating 1500 VDC, current rating 80 A
• UV-rated polycarbonate construction
• Type 3R enclosure rating
• Allowable wire 14 AWG to 6 AWG
• Operating temperature -35°C to +75°C
• Dimensions 5.1″ x 5.1″ x 2.3″, weight 6 lb
• Roof slope range 2 to 90 degrees
• Max side wall fitting size 3/4″
• Certified to CSA C22.2 No. 290 and UL 1741
• 25-year warranty

Ideal for rooftop residential and commercial solar arrays, this junction box supports combiner and disconnect wiring across a wide slope and temperature range. Made in the USA, it integrates with standard PV wiring from 14 AWG to 6 AWG and accepts 3/4″ side wall fittings for clean, code-compliant installations. Order the JB-M.442+ (also listed as JBM.442+) from Circuit Solar, in stock in Canada and shipped from Red Deer, AB.