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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryIndustryElectrical IndustryBadenSERD GmbH
SERD GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of SERD GmbH is the development, production and delivery of bushings for transformers and generators, particularly silicon-reinforced insulators for oil-insulated transformers, as well as the provision of services such as engineering, retrofit, refurbishment, diagnostics and consulting in the field of transformer and generator bushings.

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Offering

Products & services

Industry:Electrical Industry
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4.1/5

SERD GmbH

✓ Offered6
Transformer and generator bushings
Bushings for transformers and generators, including SIDI-ECO transformer bushings, high-current bushings, generator bushings, special bushings and insulating housings without conductors.
Production / Engineering
Development, design, production and delivery of bushings for transformers and generators, including calculations and custom configurations.
Retrofit / Refurbishment
Replacement of bushings during planned shutdowns, including retrofit solutions and refurbishment for transformer and generator components.
Diagnostics
Diagnostics for operational safety of facilities with on-site or in-plant diagnostics, measurements such as C-tanδ, partial discharges and voltage testing.
Service
Comprehensive support for generator and transformer bushings, including support, measurements, installation, repair, monitoring and sourcing spare parts.
Consulting
Consulting on design weaknesses, design studies, expert reports, market studies, training, acceptance tests and optimisation of production processes.
Trust & reputation

ranQ Trust Score of SERD 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.

SERD 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%
SERD GmbH scores 79.4 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.83.012%
  • 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.70.07%
SERD 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%
SERD GmbH scores 8.6 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 35.8.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

SERD 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

Neuenhoferstrasse 101
5400 Baden
Opening hours
Mon
07:30 - 18:00
Tue
07:30 - 18:00
Wed
07:30 - 18:00
Thu
07:30 - 18:00
Fri
07:30 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-109.515.475
Founded
2017 · 9 years
Last commercial register change
January 31, 2024
Employees
11 to 20
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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