Merlin AC Changeover Units — Inverter/Shore and Generator/Shore, 25A & 63A
Automatic, break-before-make selection between AC sources. Inverter/shore changeovers at 25 A and 63 A; generator/shore changeovers at 25 A and 63 A with a built-in time delay so the generator warms up before it takes the load.
Delivery & shipping
- Free local delivery — Trang · Krabi · Phuket
- Thailand-wide courier, typically 1–3 days
- Worldwide shipping by courier & sea freight
Fair price check
Our price is the manufacturer's home-market RRP — what this gear sells for where it's made. Branded marine equipment in Thailand typically retails 15–90% above that, when prices are published at all. Ours doesn't.
About this product
Two AC sources must never be connected together. Merlin changeover units select the live source automatically — shore power when it is plugged in, otherwise the inverter or generator — with break-before-make switching so back-feeding is impossible. The generator versions add an adjustable time delay: the set starts, runs up to speed and stabilises, and only then is the load transferred.
Key features
- Automatic break-before-make source selection
- Inverter/shore: 25 A and 63 A
- Generator/shore: 25 A and 63 A with warm-up time delay
- Enclosed and pre-wired
- 230 V single phase
Where it fits
Boats with an inverter and shore inlet, generator-equipped vessels, mobile command and welfare units, and off-grid installations mixing mains and inverter supply.
Specifications
| Supply | 230 V AC single phase |
|---|---|
| Inverter/shore | 25 A (15-3005), 63 A (15-3007) |
| Generator/shore | 25 A (15-3009), 63 A (15-3011), adjustable time delay |
| Manufacturer | Merlin Power Ltd, UK |
Choose your version
| Version | Merlin part no. | Price (USD) |
|---|---|---|
| Inverter / shore changeover 25 A | 15-3005 | $318.99 |
| Inverter / shore changeover 63 A | 15-3007 | $624.99 |
| Generator / shore changeover 25 A with time delay | 15-3009 | $444.99 |
| Generator / shore changeover 63 A with time delay | 15-3011 | $721.99 |
Worldwide delivery. Price shown is for the goods; freight to your door anywhere in the world is quoted at cost and invoiced separately. Merlin products are built in the UK — stock items typically dispatch within 1–3 working days, built-to-order kits within 30 days. Thailand customers: we consolidate into our regular air-freight consignments to Trang, Phuket and Bangkok. Not sure which version you need? Email hello@drakemarine.com or WhatsApp +66 99 406 4680 with your battery and charging layout and we will spec it for you.
Why buy Merlin Power from us
Merlin Power has designed and built battery management electronics in the UK for more than 20 years, with the same technology fitted to lifeboats, emergency-service fleets and NATO armoured vehicles. We supply the full Merlin range with system design support: tell us your alternator, battery chemistry and loads and we will specify the right controller, contactors and cabling, and pair it with matching batteries, charging and renewable inputs where it makes sense. Every unit carries Merlin's manufacturer warranty and is supported by Merlin's UK technical team.
Downloads & software
Datasheets, installation manuals, programming guides and the free PC configuration software for programmable units are published on Merlin Power's manuals page and software page. We can also send the relevant PDF with your quote.
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