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Q: any recommendations needed for instalation

Its really straight forreward. Make sure all your solar cables are fully connected, use volt meter to test each string. Make sure the connectors snap all te way in. Once all stringd connected, flip all fuses to off and check to see output to controller light is on, turn off and on and check each string individually. I found gauge of wire a bit thin and upgraded fuses to 30 Amps. Have used box 3 years at full 2400 Watt capacity with no problems.

Q: Is it just a plug n play or does it come separate

No you need to prep it. There is some wiring that needs to be done in the box before use.

Q: If the ground wire is attached from the combiner box to the grounding rod, do the panels still need to be grounded?

If the panels are grounded to the same rod, I suppose you do not need to add a second grounding. In case of an electrical storm, the grounding of the combiner panel is of the upmost importance. I have used this connection to ground also the control charge, inverter and the DPS

Q: Does this connect 4 100w panels in series or parallel?

If you connect each panel (string) individually to the PV Combiner Box, the panel strings will be combined in parallel. You can also connect two panel pairs or all four panels in series before connecting your four panel array to the PV Combiner Box. However you connect your four panel array to the PV Combiner Box, keep in mind that each string (up to four maximum) must be limited to 10 Amps current as specified by Eco Worthy. Also take note of the Eco Worthy specifications for maximum allowable voltage. Parallel panel connections multiply current from each panel and series panel connections multiply voltage from each panel. If you are using the four panel array to charge batteries, you should also use a charge controller. For a 400 Watt array, you should consider a MPPT Controller, which would work best with a higher input voltage achieved with series panel connections. Note, however, most smaller MPPT controllers are limited to 100 Volts input. Lastly, before selecting parallel or series panel connections, consider partial shading of the panels. If you expect partial shading, parallel connections between panels would work best. Refer to your panel manufacturer recommendations and panel specifications. Also, always take care to make sure your wire size complies with applicable codes and specifications for current and voltage.

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Description

⚡ Combine power, safety, and simplicity—your solar setup’s new best friend!

ROBUST SAFETY - Built-in lightning arrester and reverse-current protection keep your investment secure outdoors.
EFFORTLESS SETUP - Mounting buckle design means no tools or keys—get your solar system running in minutes.
POWERFUL CAPACITY - Supports up to 63A and 4 PV strings, handling solar arrays up to 3120W for versatile system scaling.
TRUSTED BRAND LEGACY - One of the pioneers in PV combiner boxes with dedicated customer support for peace of mind.
WEATHERPROOF RELIABILITY - IP65 rating ensures rainproof durability, perfect for any climate or RV adventures.

The ECO-WORTHY 4 String PV Combiner Box is a rugged, easy-to-install solar panel combiner featuring a 500V 63A DC circuit breaker, IP65 waterproof rating, and integrated lightning arrester. Designed for on/off-grid systems, it supports up to 4 strings with 10A per input, making it ideal for residential and RV solar setups up to 3120W. Its plug-and-play design and trusted brand heritage ensure a reliable, hassle-free solar connection experience.

Specifications

Manufacturer	ECO-WORTHY
Part Number	L03040401017-1
Item Weight	3.6 pounds
Product Dimensions	8.66 x 6.69 x 4.33 inches
Item model number	L03040401017-1
Is Discontinued By Manufacturer	No
Size	4 String PV Combiner Box
Color	Gray
Shape	Rectangular
Power Source	AC/DC
Item Package Quantity	1
Measurement System	Metric, Imperial
Mounting Type	surface
Included Components	Combiner box
Batteries Included?	No
Batteries Required?	No

Have a Question? See What Others Asked

any recommendations needed for instalation

Is it just a plug n play or does it come separate

If the ground wire is attached from the combiner box to the grounding rod, do the panels still need to be grounded?

Does this connect 4 100w panels in series or parallel?

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