No I always call the customer service.

Have three strings. I need a 20 amp fuse for one of them, can I replace one of the 15 amp fuses with a 20 amp and keep the remaining fuses 15 amps?

For your case, please ensure the three strings' total voltage are close or the same to each other.

My panels have 8.9Amp.Should that be protected by 10Amp fuse?

This does not matter. 10Amp and 15 Amp are both can be used. We offered 15Amp.

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🔋 Power up your solar game with ultimate safety & efficiency!

50 A AIR CIRCUIT BREAKER CONTROL - Quickly isolates faults to maintain uninterrupted solar power flow.
INTEGRATED 15 A FUSES FOR EACH STRING - Individual overload protection maximizes safety and system longevity.
ROBUST METAL HOUSING WITH IP 65 RATING - Durable, weatherproof design ensures reliable outdoor solar system protection.
PRE WIRED WITH PREMIUM SOLAR GRADE CABLES - Simplifies installation while optimizing electrical efficiency.
ADVANCED SURGE PROTECTION LIGHTNING ARRESTOR - Safeguards your investment from unpredictable power surges and storms.

The PowGrowPV Combiner Box is a professional-grade, metal-encased solar combiner designed for on/off-grid photovoltaic systems. Featuring four 15A fuses, a 50A air circuit breaker, and a built-in surge protective device, it ensures superior overload, short circuit, and lightning protection. Its IP65 waterproof rating and pre-wired solar-grade cables make installation seamless and durable for outdoor use, optimizing your solar panel system’s performance and safety.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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