Circuit breaker replacement cost in Luxembourg (2026)

Parts prices (indicative):

• MCB 10 A to 32 A single-pole, European brand: €15–€45 per unit
• RCD 30 mA two-pole 25 A: €55–€110
• RCBO 16 A: €45–€95
• DIN-rail enclosure 12 module: €55–€140
• 3-phase four-pole RCD: €180–€340

Cost drivers:

• Brand — generic imports are 30–40 % cheaper but may fail ILR test
• Pole count — three-phase circuits cost 2× to 3× a single-phase
• Time of day — after-hours calls 2,5× to 3× weekday daytime
• Circuit diagnostics — a non-obvious trip cause may bill €60–€150 in diagnostic time

A €150 net job at TVA 17 % reaches €176 TTC. A €150 net job at TVA 3 % (primary residence) reaches €155 TTC — a meaningful saving on recurring household jobs.

The Institut Luxembourgeois de Régulation (ILR) supervises electrical installations. Three rules decide whether a declaration is needed after the work.

Like-for-like breaker swap inside an existing unit — no ILR declaration required, provided:

• The replacement unit has the same pole count, ampere rating and short-circuit characteristic (C, B, D curve) as the original
• The enclosure, bus-bar and sub-distribution are unchanged
• The work does not introduce a new final circuit
• The electrician issues a signed job ticket referencing their Autorisation d'établissement

ILR declaration and test required when:

• A new final circuit is added (new oven, heat pump, EV charger)
• The RCD protection is upgraded or downgraded (e.g. 30 mA → 10 mA for medical equipment)
• The consumer unit is moved, replaced or its capacity expanded
• The installation crosses certain thresholds (three-phase upgrade, large EV charger above 11 kW)
• Subdivision of a circuit for kitchen or bathroom zones occurs

The ILR cost stack:

• Electrician declaration fee: €60–€150 admin
• ILR inspection fee (when applicable): €180–€320
• Inspection delay: 2–6 weeks post-installation
• Conformity certificate (if required by notary or insurer): €60 per copy

Practical rule: same breaker, same position, same rating → simple swap. Anything that changes the topology → declaration. Ask the electrician on the phone before confirming the job whether the scope triggers ILR. Insurance claim after a fire relies on conformity — skipping ILR when required voids cover.

Most electricians bill a call-out fee plus time. Luxembourg market-rate conventions are predictable.

The four time bands:

• Weekday 08:00–18:00 — baseline: €45–€90 call-out, €65–€95 hourly
• Weekday 18:00–22:00 — evening: €75–€130 call-out, €85–€130 hourly
• Weekend daytime — €90–€180 call-out, €95–€145 hourly
• Night 22:00–08:00 and public holidays — €150–€280 call-out, €130–€220 hourly

What the call-out typically covers:

• Travel to and from site (radius ~35 km)
• First 15 minutes on site
• Basic testing tools (multimeter, insulation tester)
• A single breaker fit — but not the part itself

Diagnostic time that frequently surprises:

• Non-obvious trip: requires isolating each downstream circuit and testing leakage — 30 to 90 minutes at the hourly rate
• Intermittent fault: may need a return visit to capture the trip in action — second call-out billed at 50 %
• Old wiring (pre-1990): copper-to-aluminium joints corrode; testing each terminal in turn adds 20–40 minutes

Emergency rules worth knowing:

• A full power-out with RCD tripping is usually a downstream device, not the breaker itself — try unplugging each appliance first
• Sparks or smell of burning from the consumer unit — shut the main isolator, call the emergency line, expect night-rate cost
• A breaker that trips immediately on re-set — do not hold it against the spring; call the electrician

The cheapest emergency is the one avoided. A yearly RCD test (press the test button monthly, trip-time test annually) costs nothing and catches most issues before they escalate.

Swapping a breaker is a standard maintenance act of a dwelling. At a primary residence held more than 2 years, the labour portion qualifies for TVA 3 % via the logement.lu declaration; the breaker unit itself stays at TVA 17 %.

Rate in practice:

• Breaker swap at primary residence > 2 years old: labour TVA 3 %, part TVA 17 %
• New build < 2 years old: TVA 17 % on everything
• Rental property: TVA 17 %; landlord with VAT on commercial rental may deduct
• Secondary residence: TVA 17 %
• Office or commercial premises: TVA 17 %

Split invoice pattern:

• Part line (breaker, RCD, RCBO): net + TVA 17 %
• Call-out fee: net + TVA 3 % (eligible as labour)
• Hourly labour: net + TVA 3 % (eligible)
• Diagnostic + testing time: net + TVA 3 %
• Reference to logement.lu declaration

Worked example on a €150 TTC residential MCB swap:

• At full 17 %: part + labour = €128 net, TVA 17 % = €22, €150 TTC
• With logement 3 % split (say 25 % part, 75 % labour): part €32 + TVA 17 % €5 = €37; labour €96 + TVA 3 % €3 = €99; total €136 TTC
• Saving: €14 per job

On a consumer-unit replacement at €2 400 net (40 % parts / 60 % labour):

• Parts €960 + TVA 17 % €163 = €1 123
• Labour €1 440 + TVA 3 % €43 = €1 483
• Total: €2 606 TTC vs €2 808 TTC at full 17 %
• Saving: €202

Ask the electrician for the logement split before signing the visit acknowledgement.

For a single-breaker swap, quote comparison is mostly about hourly rates and call-out policy. For a board replacement, it is about enclosure brand, circuit count, RCD distribution and ILR approach.

The six checks that matter:

• ILR registration. Ask for the company's Autorisation d'établissement and ILR-registered electrician identifier. A cash-only offer voids fire insurance.
• Brand of breakers. Hager, Schneider Electric, ABB, Legrand are accepted. Generic imports may fail ILR re-test.
• Warranty. 2-year manufacturer warranty on the breaker passes through; 2-year workmanship warranty on the installation is standard.
• Call-out policy. Flat fee or hourly? First 15 minutes included? After-hours multiplier?
• Diagnostic allowance. Up to 30 or 45 minutes diagnostic included in the call-out?
• ILR declaration cost. If the scope triggers ILR, who pays the declaration and the inspection?

Briefing pack to send each electrician:

• Photo of the existing consumer unit with the lid off
• Photo of the tripping breaker with amperage reading visible
• Brand and model of any new appliance triggering the swap
• Target visit date
• Proof of primary residence for the TVA 3 %

Typical market segments:

• One-person independent at €65–€85/hour — best for single-breaker swap, agile
• Small firm (3–6 electricians) at €75–€95/hour — full-board projects, usually covers Luxembourg-City and Esch
• Multi-trade building contractor at €85–€120/hour — premium, usually part of renovation bundle

Quotes on the same brief cluster within ±15 %. A 30 % discount in the cheapest quote usually means either the diagnostic is excluded (billed after) or the part is a generic import. Call to confirm brand and scope before picking.