The essentials in 30 seconds
- Three families coexist in 2026: classic mechanical circuit breakers (BEP, Blue Sea, the pleasure craft standard), CZone (Navico, B&G/Simrad/Mastervolt integration), EmpirBus (Mastervolt, complete MasterBus integration).
- Advantages of digital switching: consumption monitoring per load (fridge, autopilot, etc.), smartphone control, automation scenarios (Night = all off except nav), data history.
- Drawbacks: hardware cost 3-5× higher, configuration complexity, electronic dependency (CPU failure = total failure), training required for service.
- Workshop verdict: classic BEP for 70% of pleasure sailboats 30-45 feet (~ 500-800 € VAT excluded installed). CZone for 45+ foot newbuild yachts already equipped. EmpirBus for 50+ foot yachts with a complete Mastervolt ecosystem.
- Budget for a complete digital panel on a 45-foot sailboat: 4 000-8 000 € VAT excluded hardware + 6-12 hours workshop installation.
The electrical panel is the sailboat’s central nervous system for power. It distributes power to circuits, protects against short circuits, and allows turning loads on/off. The digital generation (CZone, EmpirBus) adds monitoring and automation but costs 3-5× more. This article distinguishes use cases.
The three families of panels
Classic — mechanical circuit breakers
Pleasure craft standard since the 1970s. Thermal-magnetic circuit breakers (Blue Sea, BEP) mounted on a panel with ammeter/voltmeter. Robust, simple, economical.
CZone — digital Navico
Navico digital switching system, integrated with B&G/Simrad/Mastervolt ecosystems. Distributed I/O modules + central interface via chartplotter or dedicated display.
EmpirBus — digital Mastervolt
Complete Mastervolt system for high-end yachts with a full Mastervolt ecosystem (Alpha Pro alternator, MultiPlus, MLi Ultra). Proprietary MasterBus architecture.
Classic BEP — the pleasure craft standard
Skysat distributes the BEP range (Blue Sea sub-brand) with 6-12-24 circuit breaker panels:
- 12V DC vertical 8-circuit breaker panel ~ 325 € VAT excluded.
- 12V DC horizontal 12-circuit breaker panel ~ 503 € VAT excluded.
- CSP6 PTC 6-way watertight panel ~ 172 € VAT excluded for cockpit.
- Color DC Monitor with shunt ~ 635 € VAT excluded for consumption monitoring.
CZone — the Navico/Mastervolt ecosystem
Distributed architecture: I/O modules near loads + central interface on Zeus/Vulcan chartplotter or dedicated COI display.
- COI Combination Out Interface ~ 2 410 € VAT excluded for 8 controllable outputs module.
- 6/12/24-way I/O modules, ~ 800-2 500 € VAT excluded each.
- Central interface via Zeus 3S or dedicated display.
- iOS/Android smartphone app for remote control.
EmpirBus — complete MasterBus integration
Mastervolt system for high-end yachts with a complete Mastervolt ecosystem (Alpha Pro alternator, MultiPlus, MLi Ultra).
- NXT Touch modules (integrated display), NXT Lighting (lighting), NXT Switching (outputs).
- Native MasterBus integration: battery bank monitoring + panel in a single interface.
- Complete system budget ~ 6 000-12 000 € VAT excluded for 50+ foot yachts.
Technical comparison table
| Criteria | Classic BEP | CZone | EmpirBus |
|---|---|---|---|
| 12-15 circuit panel price | ~ 500-800 € | ~ 3 500-5 500 € | ~ 6 000-9 000 € |
| Load/post consumption monitoring | No (global shunt) | Yes | Yes (MasterBus integrated) |
| Smartphone control | No | Yes (B&G/Simrad app) | Yes (Mastervolt app) |
| Scenario automation | No | Yes | Yes |
| CPU failure = total failure | No (mechanical) | Yes (manual backup possible) | Yes |
| Maintenance | 30 € circuit breaker if faulty | 800-2 500 € module if faulty | 1 500-3 000 € module |
| Target program | Pleasure craft 30-45 feet | Yacht 40-55 feet | 50+ foot Mastervolt yachts |
Workshop verdict by program
30-45 foot pleasure sailboat — classic BEP
Skysat workshop standard. 12-circuit breaker panel (~ 500 € VAT excluded) + separate battery shunt monitoring (BMV-712 at 215 € VAT excluded). Total ~ 750 € VAT excluded installed. Robust, easy to maintain.
40-55 foot newbuild yacht already CZone — keep
If the yacht is delivered with CZone by the yard (Bénéteau, Jeanneau, Hanse), keep it and enhance it during refit. Migrating to classic means losing integration and heavy work.
50+ foot yacht with Mastervolt ecosystem — EmpirBus
If a complete refit includes MLi Ultra + MultiPlus + Alpha Pro, EmpirBus provides perfect integration. Only relevant with a majority Mastervolt ecosystem.
Installation and configuration
Workshop rules — panel installation
- Accessible position: standing, at hand height, near the saloon.
- Ventilation: 5-15 W dissipated depending on active loads. Not in a closed locker.
- Consistent wiring: strict color code (red = positive, black = negative, yellow = ground), labeling on each circuit.
- Final documentation: annotated electrical diagram, user manual, emergency procedure (cut main battery).
FAQ — Electrical panels
Can a classic panel be converted to CZone?
Yes but it’s heavy work. Remove classic panel + install distributed I/O modules + central integration + software configuration. Count 4-6 days + 4 000-6 000 € VAT excluded for a 40-foot sailboat. Often not relevant vs. a complete winter refit.
What to do if a CZone module fails?
CZone allows a "manual backup" mode (physical bypass switch) on some modules. Otherwise, replace module in 1-2 days + 1 500-3 000 € VAT excluded for the part. Plan for continuity in advance if dependent.
Real energy savings with digital switching?
Yes on the annual balance. Load-by-load monitoring detects hidden consumption (fridge cycling too often, screen left on unnecessarily at night). Typical savings 15-25% on total consumption.
Is the smartphone really useful day-to-day?
Yes for 3 cases: (1) remotely turn everything off after leaving the boat, (2) monitor from the dock to check battery state in winter, (3) simple automation (turn fridge on 2 hours before boarding).
6, 8, 12 or 24-way circuit breakers?
30-foot sailboat: 8 ways. 35-40 feet: 12 ways. 45+ feet: 16-24 ways. Always plan 20% reserve for future additions (new equipment).
Skysat distributes BEP, CZone and EmpirBus. 2026 VAT-excluded prices are indicative for certified distributor.
