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Grey steel wall box, rotary lock, four cable glands, mounting brackets

VEVOR

VEVOR PV Combiner Box 4 String 15A Fuse 63A Breaker IP65 Steel Case

SKU CH-ZXMY-WAKWR

A four-string solar combiner box with 15 A fuses, a 63 A breaker, 40 kA surge protection and an IP65-rated steel enclosure

  • TypeOther Appliances
  • Width11.02
  • IP65 rated enclosure blocks dust and water ingress for outdoor durability
  • 63 A DC circuit breaker isolates all four strings in one action
  • Four 15 A DC fuses protect each string against overcurrent
  • 40 kA surge protector clamps lightning transients at 500 V
  • Cold-rolled steel case with RAL 7035 coating resists impact and corrosion

Four-String Solar Combiner Box

This PV combiner box consolidates up to four solar strings into a single output, rated for DC 500 V operation. It is designed for on-grid and off-grid photovoltaic installations that require reliable string-level overcurrent protection and surge suppression in a single enclosure. The unit suits installers who need a compact, weatherproof junction for small to medium arrays.

15 A Fuses and 63 A Breaker Under Load

Each of the four inputs is protected by a DC 15 A fuse rated at 500 V, while a 63 A two-pole main circuit breaker isolates the combined output. The 40 kA surge protector clamps transient over-voltages across the DC bus, limiting damage during lightning events. This arrangement keeps a fault on one string from disabling the entire array.

IP65 Steel Enclosure in Normal Use

The 0.8 mm cold-rolled steel case with RAL 7035 grey-white coating and PU foam sealing strip meets IP65 dust and water ingress protection. A rotary lock secures the door, and the detachable powder-coated mounting plate simplifies wiring before final installation. Four steel brackets and PG glands are included for wall mounting and cable entry.

Highlights

  • IP65 rated enclosure blocks dust and water ingress for outdoor durability
  • 63 A DC circuit breaker isolates all four strings in one action
  • Four 15 A DC fuses protect each string against overcurrent
  • 40 kA surge protector clamps lightning transients at 500 V
  • Cold-rolled steel case with RAL 7035 coating resists impact and corrosion

Specifications

TypeOther Appliances
Width11.02

Questions about this item

Does the IP65 steel enclosure get hot when the 15 A fuses carry full load all day?

The box is rated IP65 and built from 0.8 mm cold-rolled steel with a RAL 7035 coating, but no temperature-rise or thermal-dissipation figure is published for continuous 15 A operation.

What cables and connectors must I already have to wire the four strings into the supplied MC4 leads?

You need four PV strings fitted with MC4 plugs and 2.5 mm² cable to match the pre-wired male and female MC4 pigtails included in the package.

Will the 63 A breaker and 40 kA surge protector coordinate with an older 500 V charge controller?

The main breaker is rated 63 A at 500 V DC and the SPD clamps at 40 kA, 500 V DC, so they are designed for 500 V DC systems; verify your controller’s maximum voltage and short-circuit rating before connecting.

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