Replacing an RCD in Spain: price and fault diagnosis
A protective device tripping does not prove that it is faulty. Separate diagnosis, device replacement and repairs to the circuit or appliance causing the problem.
Reference of EUR60-110 including VAT for standard RCD or miniature-circuit-breaker replacement advertised by Madsan in Madrid; the tariff groups both devices. An independent Barcelona offer advertises RCDs from EUR89 without clarifying VAT. This cross-checks a starting price, not a second upper limit. Specialist devices, emergencies and leakage repairs may exceed the range.
Last reviewed
September 2026
Edited by: Lucia Navarro
Pricing method
Indicative ranges are compared by scope, measurements, materials, labour, permits, VAT and contingency.
Alicante context
Confirm access, community rules, salt-air exposure and municipal requirements before accepting a quote.
Service references
A protective device tripping does not prove that it is faulty. Separate diagnosis, device replacement and repairs to the circuit or appliance causing the problem.
Standard replacement: bounded reference
VAT-inclusive Madrid tariff grouping RCDs and miniature circuit breakers.
Independent Barcelona offer
Advertised starting price for 25-40 A, with supply, installation and checking.
Share your project details and get free contact with professionals who work on similar projects.
Price and scope comparison
See what homeowners usually pay for the most common tasks. Use these ranges to fine-tune your scope and avoid missing key items in your budget.
Standard replacement: bounded reference
VAT-inclusive Madrid tariff grouping RCDs and miniature circuit breakers. Confirm coverage of the required device and tests; it does not automatically include repairing the cause of tripping.
Independent Barcelona offer
Advertised starting price for 25-40 A, with supply, installation and checking. The page does not clarify VAT. It is not treated as a fixed price for every home.
Commissioning process with Reformia
A protective device tripping does not prove that it is faulty. Separate diagnosis, device replacement and repairs to the circuit or appliance causing the problem.
1. Describe the issue and arrange a safe survey
2. Receive findings and a quote with exclusions
3. Approve the scope and plan the interruption
A protective device tripping does not prove that it is faulty. Separate diagnosis, device replacement and repairs to the circuit or appliance causing the problem.
What is usually included in a quote
Each professional may structure quotes differently, but most project budgets follow this logic.
What the quote should include
What is priced separately
Commissioning process
A protective device tripping does not prove that it is faulty. Separate diagnosis, device replacement and repairs to the circuit or appliance causing the problem.
1. Describe the issue and arrange a safe survey
2. Receive findings and a quote with exclusions
3. Approve the scope and plan the interruption
4. Receive test results, documentation and follow-up
Factors affecting the price
Even similar projects can end with different budgets. These are the factors that most often push costs up or down.
Cause of the fault and diagnostic time
Required type, poles, rated current and sensitivity
Board access and connection condition
Scheduled work versus emergency attendance
Next step
Describe your project and request an electrician's quote: provide the location, issue, property use and survey availability. Attach only safely taken photographs of the closed board. Request written supply, labour, testing, tax, exclusion and extra-work terms before commissioning. If the cause is unknown, begin with an electrical installation inspection and agree what diagnosis is included. Choose by scope and documentation, not just the initial figure.
Replacing an RCD in Spain: price and fault diagnosis
A protective device tripping does not prove that it is faulty. Separate diagnosis, device replacement and repairs to the circuit or appliance causing the problem.
An RCD detects current imbalance associated with leakage and disconnects according to its characteristics. Repeated tripping may be a response to a genuine fault in a circuit or appliance. Simply requesting a replacement may therefore fail to address the cause. This guide helps you commission professional diagnosis and testing; it is not a guide to working inside a board or selecting protective devices yourself.
Diagnosis, scope and handover
A protective device tripping does not prove that it is faulty. Separate diagnosis, device replacement and repairs to the circuit or appliance causing the problem.
Request an RCD replacement quote explaining when the issue occurs, which equipment was running and whether previous work has been carried out. A photograph of the closed board may help the professional prepare, provided it can be taken without approaching moisture, smoke or damaged parts. Do not open covers or remove protection for a clearer image. Where there is a burning smell, visible overheating or nearby water, stop using the affected area and seek assistance; for fire or immediate danger, call 112 from a safe place.
Reference of EUR60-110 including VAT for standard RCD or miniature-circuit-breaker replacement advertised by Madsan in Madrid; the tariff groups both devices. An independent Barcelona offer advertises RCDs from EUR89 without clarifying VAT. This cross-checks a starting price, not a second upper limit. Specialist devices, emergencies and leakage repairs may exceed the range.
Before comparing brands, ask the electrician to distinguish genuine leakage, a problem in protected equipment and a possible device fault. An intermittent issue may require more investigation than a short visit allows. Agreeing a diagnostic charge avoids confusing an initial assessment with a complete repair. Ask what findings you will receive, what happens if the fault cannot be reproduced and who authorises extra work. A component should not be replaced merely because it is quicker than investigating.
RCD selection depends on the installation and its loads. Rated current in amperes is not the same as tripping sensitivity and does not, by itself, establish that a model is safer or more suitable. Do not request a higher threshold to prevent inconvenience or bypass the protection. Explain whether solar generation, an EV charger, variable-speed equipment or other relevant loads are present and have the professional check compatibility and coordination with the other devices.
For a second home, keep a dated incident record without turning it into an unsafe household experiment. Do not deliberately trigger trips by connecting suspect appliances or ask a keyholder to open the board. Give the technician a description of observations, the owner's contact and an authorisation limit for extras. Afterwards, retain the installed reference, test results and outstanding work; a replacement invoice does not establish that every electrical installation in the home has been inspected.
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Read articleFrequently asked questions
Does tripping mean it needs replacing?
Not necessarily. It may be correctly responding to leakage. Arrange diagnosis before deciding on replacement and do not treat repeated resetting as a solution.
Will any RCD do?
No. Type, poles, rated current and sensitivity must be suitable. Selection belongs to the professional after reviewing the installation and loads.
Does the range cover emergencies?
That is not assumed. It is a standard replacement reference. Confirm surcharges, travel, VAT and diagnosis before accepting emergency attendance.
What if the fault returns?
Report when it returns and retain the previous findings. Further investigation may be needed; do not bypass protection or raise its threshold to hide the issue.
Got more questions? Contact us!
Got more questions? Contact us!
Frequently asked questions
Does tripping mean it needs replacing?
Not necessarily. It may be correctly responding to leakage. Arrange diagnosis before deciding on replacement and do not treat repeated resetting as a solution.
Will any RCD do?
No. Type, poles, rated current and sensitivity must be suitable. Selection belongs to the professional after reviewing the installation and loads.
Does the range cover emergencies?
That is not assumed. It is a standard replacement reference. Confirm surcharges, travel, VAT and diagnosis before accepting emergency attendance.
What if the fault returns?
Report when it returns and retain the previous findings. Further investigation may be needed; do not bypass protection or raise its threshold to hide the issue.