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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTesting & Inspection CentersDüdingenContrelec GmbH
Contrelec GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Contrelec GmbH consists of carrying out safety and acceptance inspections, testing of machines and equipment, lightning protection audits, electrical and industrial thermography, building thermography, as well as consulting and expert opinions in the field of safety in electrical installations.

AI-generated
Offering

Products & services

Industry:Testing & Inspection Centers
✓ Offered12
Periodic electrical inspections / Safety certificate SiNa
Periodic inspection of electrical installations, safety certificate (SiNa), inspection at transfer of residential and commercial properties.
Acceptance checks
Acceptance checks for electrical installations with an inspection interval of less than 20 years, within six months after takeover by an authorized inspection body.
Final inspections
In-house final inspections before handing over electrical installations, with recording of the results in the safety certificate and independent execution.
Appliance testing
Inspection of electrical, portable appliances according to current regulations and standards to ensure electrical safety and protect material value.
Pronovo audit body HKN / EVS / EIV
Certifications and installation inspections for photovoltaic systems as an official auditor, including EVS, EIV and HKN certifications.
Machine safety
Verification of electrical safety of machines and equipment, repeat inspections, safety measurements, incoming goods inspections, and advice on EN 60204-1 and MaschV.
Lightning protection
Design, acceptance inspection, periodic inspection and administrative formalities for lightning protection systems, plus support through to project completion.
Electrical and industrial thermography
Non-destructive thermography of electrical installations and production plants to detect defects, weak points and elevated temperatures.
Building thermography
Non-destructive building thermography to identify energy weaknesses, insulation and sealing defects, and structural deficiencies.
Electrical safety concept
Support from consultation through to the finished electrical safety concept, including training, coaching and assistance with implementation.
Network analysis / load profile / compensation
Analysis of electrical network faults, load profile measurements and compensation consulting for flickering light, outages or faulty electronic modules.
Measuring instrument management
Monitoring, archiving of certificates, scheduling for calibration, and organization of repairs for measuring instruments.
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4.1/5

Contrelec GmbH

Trust & reputation

ranQ Trust Score of Contrelec GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Contrelec GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Contrelec GmbH scores 89.7 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.82.07%
Contrelec GmbH scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Contrelec GmbH scores 0.3 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.0.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Contrelec GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Bonnstrasse 22
3186 Düdingen

At a glance

Legal form
Limited Liability Company
UID
CHE-110.326.610
Founded
2003 · 23 years
Last commercial register change
May 2, 2017
Employees
21 to 50
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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