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Grey-white ABS plastic box with transparent latch door and cable glands

VEVOR

VEVOR SP-HL-P202010-15A PV Combiner Box 4 String 15A Fuse 63A Breaker IP65 ABS

SKU CH-3ZMR-2XJJ6

Four-string solar combiner box with 15A fuses, 63A breaker, 40kA surge protector and IP65-rated ABS enclosure

  • TypeOther Appliances
  • Width9.84
  • 4 string input simplifies solar array wiring
  • 15 A DC fuses protect each string individually
  • 63 A main breaker isolates the entire system
  • 40 kA surge protector shields against lightning strikes
  • IP65 rated ABS enclosure resists dust and water ingress

PV Combiner Box for Four-String Solar Arrays

This VEVOR combiner box consolidates up to four photovoltaic strings into a single output for on-grid or off-grid installations. It accepts DC 500 V at each input and uses 15 A fuses per string with a 63 A main circuit breaker. The ABS plastic enclosure carries an IP65 rating for dust and water protection. Installers mount it using the supplied steel brackets and cable glands.

Sustained Operation With 63 A Breaker and Surge

Under continuous load the 63 A two-pole DC breaker handles the combined current while 40 kA surge protection clamps transient over-voltages at DC 500 V. The PU foam sealing strip maintains the IP65 barrier during temperature cycling. Fuse holders rated at DC 15 A/500 V allow individual string isolation without shutting down the entire array. The detachable ABS mesh mounting plate simplifies wiring and periodic inspection.

Upgrade From Single-String

Systems that currently join strings in a basic junction box without per-string fusing or a main breaker gain selective fault isolation and surge clamping. The jump is worth it when array expansion exceeds one string or when code requires over-current protection per circuit. Buyers who need more than four input strings or a higher DC voltage rating will need a different enclosure.

Highlights

  • 4 string input simplifies solar array wiring
  • 15 A DC fuses protect each string individually
  • 63 A main breaker isolates the entire system
  • 40 kA surge protector shields against lightning strikes
  • IP65 rated ABS enclosure resists dust and water ingress

Specifications

TypeOther Appliances
Width9.84

Questions about this item

Does the 15 A fuse rating limit how much heat the box produces when it runs all day?

The box has no active cooling and its ABS plastic case is rated IP65; heat output depends on the current actually flowing through the four 15 A fuses and the 63 A breaker, not on the fuse rating alone.

What cables or connectors must I already have to wire the four strings into this combiner?

You need PV cables sized for 2.5 mm² conductors with MC4-compatible plugs; the package supplies four MC4 male and four female pigtails plus PG 13.5 and PG9 glands for cable entry.

Will the 500 V DC rating and 63 A breaker work safely with older panels that only have 10 A short-circuit current?

Yes — the 15 A fuses and 63 A 2-pole breaker are rated for DC 500 V, so panels with 10 A Isc are well within the protection limits of this combiner box.

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