3 to 1 Solar Branch Connectors MMMF+FFFM Pair
Sold by Renogy UK
From £14.99
Renogy UK's price when we last checked, on 2 September 2026. They run promotions and price by variant, so confirm the current price on their page before you buy.
Buy at Renogy UK (opens Renogy UK in a new tab)This is an affiliate link. Renogy UK takes your order, payment and delivery — Roam Wired is not the seller. If you buy through it we may earn a commission, at no extra cost to you. How we make money
How buying this works
Roam Wired does not stock this item. The button above hands you over to the seller's own shop, where you place the order, pay and arrange delivery directly with them. Nothing is added to a Roam Wired basket, and we never see your payment details.
We list it because it is the part our calculator would specify for a build like yours, not because we make the most on it. How we make money
Delivery and returns
Delivery cost, delivery time and the returns window are set by the seller, not by us, and Roam Wired's own £10 / free-over-£250 UK delivery does not apply here. Check their delivery and returns terms on their product page before you order.
Your consumer rights, including the 14-day right to cancel a distance sale, are against the seller who took your order.
Warranty and support
The manufacturer's warranty is handled by the seller you buy from. If something fails, raise it with them and quote their order number — we cannot open a claim on your behalf.
Happy to help you work out whether a part is right for your build: get in touch, or run the numbers through the free electrical calculator.
Overview
3 to 1 Solar Branch Connectors MMMF+FFFM Pair
Branch connectors for three panels in parallel. One MMMF and one FFFM, with a rivet-and-lock design that assembles and comes apart without tools.
- Three panels into one pair of leads
- Supplied as a pair: one MMMF and one FFFM
- High ageing resistance and UV endurance
- Rivet and lock connection — no tools needed
- Weatherproof for harsh environments
Three panels is where fusing starts to matter
With three or more panels in parallel, a fault in one panel can be back-fed by the other two, and a panel's internal wiring is not rated to carry that. This is the point at which an in-line fuse per string stops being optional. Size each to the panel's maximum series fuse rating — typically 15A on 100W and 175W modules.
Current adds up quickly
Three 200W panels in parallel is roughly 19A down a single roof cable. That needs 6mm² at minimum over a typical run, and a controller rated to take it. If the numbers are getting uncomfortable, a series or series-parallel arrangement with a higher-voltage MPPT controller is the better engineering answer.
Before you order
No tools for assembly is genuinely useful on a roof. Push until each connector clicks — a partially mated solar connector will still pass current and will let water in.
Renogy's published figures
Taken from Renogy's own specification for this product, on the date shown by the price. Anything wired into 230V mains should be signed off by a qualified electrician.
Build notes for this part
Get the sizing and fitting notes.
Useful product advice, installation considerations and occasional offers for this part of your van build.