IEC 60601-1: edition 3.2, MDR citation, FDA recognition

Hugues Orgitello updated 7 Oct 2026 16 min read

IEC 60601-1 is the general standard for basic safety and essential performance of medical electrical equipment. The current IEC text is edition 3.2 (2020). The European reference cited under the MDR since 17 June 2026 is a different document, EN 60601-1:2006 with A13:2024, and no collateral standard is cited yet.

TL;DR:

• Current IEC text: edition 3.2, published 20 August 2020 (2005 edition plus Amendment 1 of 2012 and Amendment 2 of 2020). Edition 4.0 is in preparation, forecast for April 2029.
• MDR: entry 65 of the annex to Implementing Decision (EU) 2021/1182, added by Decision (EU) 2026/1231 (OJ, 17 June 2026), cites EN 60601-1:2006 with EN 60601-1:2006/A13:2024 only.
• No 60601-1-x collateral standard, no EN 62304 and no EN 62366-1 is cited under the MDR. The only other 60601 entry is EN IEC 60601-2-83 (home light therapy).
• FDA: IEC 60601-1 edition 3.2 is recognised in full (19-49) when the US national differences are applied; ANSI/AAMI ES60601-1 is recognised as 19-46.
• Subclause 4.2 requires a risk management process complying with parts of ISO 14971.

IEC 60601-1 is published by the International Electrotechnical Commission and maintained by subcommittee SC 62A (Common aspects of medical equipment, software, and systems) under TC 62. Its first edition was voted in 1977. This page sets out what the current text is, what each clause covers, how the collateral and particular standards attach to it, and, read from the Official Journal and the FDA database rather than from summaries, what exactly regulators recognise on 7 October 2026.

Status on 7 October 2026

Item	Status	Source
Current IEC edition	Edition 3.2, IEC 60601-1:2005+AMD1:2012+AMD2:2020 CSV, published 2020-08-20, 842 pages	IEC catalogue
IEC stability date	2028	IEC catalogue
Next edition	Edition 4.0, status "preparing", forecast publication date 2029-04-06	IEC catalogue
Last change to the 3rd edition	Corrigendum 3, 2022-12-09 (included in the 3.2 consolidated text)	IEC catalogue
EU, MDR	Entry 65: EN 60601-1:2006 with EN 60601-1:2006/A13:2024, cited by Decision (EU) 2026/1231 of 11 June 2026, OJ 17 June 2026, in force on publication	OJ
EU, collateral standards	None of the 60601-1-x series cited under the MDR	Consolidated 2021/1182, 17 June 2026
US, FDA	19-49: IEC 60601-1 ed. 3.2 2020-08, complete, with US national differences (entry 3 April 2023). 19-46: ANSI/AAMI ES60601-1 including AMD2:2021 (entry 30 May 2022)	FDA database

One general standard, two families of companions

Clause 1 of the standard sets the hierarchy in its own words.

Tier	Numbering	What it does	Priority rule (clause)
General standard	IEC 60601-1	General requirements; "serve as the basis for particular standards"	1.2
Collateral standards	IEC 60601-1-xx	Requirements for a subgroup of ME equipment (for example radiological equipment) or a characteristic of all ME equipment not fully addressed in the general standard. They "become normative at the date of their publication and shall apply together with this standard"	1.3: where a particular standard exists, it takes priority over the collateral standard
Particular standards	IEC 60601-2-xx, or IEC 80601-2-xx / ISO 80601-2-xx for joint ISO and IEC projects	May modify, replace or delete requirements of the general and collateral standards for one type of equipment, and add others	1.4: a requirement of a particular standard takes priority over the general standard and the applicable collateral standards

Clause 1.3 also asks whoever declares compliance with IEC 60601-1 to list the collateral standards that were applied, so that a reader knows which ones were part of the evaluation. A declaration of conformity therefore names the general standard, the applied collaterals (EMC and usability are the usual ones) and the particular standard for the device type where one exists.

Edition history, from the IEC catalogue

Date	Publication	Note
1977	IEC 60601-1, edition 1.0	First edition, based on IEC/TR 60513 (1976)
1984	Amendment 1 to edition 1
1988-12-30	Edition 2.0	Title "General requirements for safety"
1991-11-13	Amendment 1 to edition 2
1995-03-07	Amendment 2 to edition 2	Edition 2 is now marked "revised"
2005-12-15	Edition 3.0	Title becomes "General requirements for basic safety and essential performance"; general requirement for a risk management process
2008, 2009	Interpretation sheets 1 and 2
2012-07-13	Amendment 1	Consolidated as edition 3.1 on 2012-08-20
2013-05-22	Interpretation sheet 3
2014-07-22	Corrigendum 1 to Amendment 1
2020-08-20	Amendment 2	Consolidated as edition 3.2 the same day
2021-03-12	Interpretation sheet 1 to Amendment 1
2022-12-09	Corrigendum 3
Forecast 2029-04-06	Edition 4.0	In preparation

The introduction of the standard explains the two amendments. Amendment 1 addressed the issues raised by National Committees since 2005, "the way in which RISK MANAGEMENT has been introduced" and "the way the concept of ESSENTIAL PERFORMANCE is used". Amendment 2 dealt with a short list of high-priority issues selected by SC 62A in 2016 (78 of the 109 items presented received the required two-thirds majority), the rest going to a "long list" for the fourth edition. It also addressed the requirements that edition 3 incorporated by normative reference from IEC 60950-1, mostly in clause 8 for means of operator protection; the requirements merely derived from IEC 60950-1 are left to the fourth edition.

The IEC foreword recommends that the content be adopted for mandatory national implementation "not earlier than 3 years from the date of publication". That is a recommendation to National Committees, not a transition period that binds a regulator: in practice, each regulator names its own reference, as the sections below show.

The seventeen clauses

The standard has seventeen clauses. Subclause titles below are taken from the table of contents of edition 3.2.

Clause	Title	What sits inside (subclauses)
1	Scope, object and related standards	Scope and exclusions, object, collateral standards (1.3), particular standards (1.4)
2	Normative references	Includes IEC 62304:2006 with Amendment 1:2015 and IEC 62368-1:2018
3	Terminology and definitions	Basic safety, essential performance, means of protection and the other defined terms
4	General requirements	4.2 risk management process, 4.3 essential performance, 4.4 expected service life, 4.5 alternative risk control measures, 4.7 single fault condition, 4.9 components with high-integrity characteristics
5	General requirements for testing	Type tests, number of samples, ambient conditions, humidity preconditioning, sequence of tests, determination of applied parts and accessible parts
6	Classification	Protection against electric shock, ingress of water or particulate matter, sterilization method, oxygen rich environment, mode of operation
7	Identification, marking and documents	Markings outside and inside, controls, safety signs, symbols, indicator lights, accompanying documents
8	Protection against electrical hazards	Fundamental rule of protection against electric shock (8.1), applied part classification (8.3), separation of parts (8.5), protective and functional earthing (8.6), leakage currents (8.7), insulation (8.8), creepage distances and air clearances (8.9)
9	Mechanical hazards	Moving parts, surfaces and edges, instability, expelled parts, acoustic energy and vibration, pressure vessels, support systems
10	Unwanted and excessive radiation	X-radiation, particle radiation, microwave, lasers and LEDs, visible, infrared and ultraviolet radiation
11	Excessive temperatures and other hazards	Temperatures, fire, flammable anaesthetics and agents, spillage and cleaning, biocompatibility (11.7), interruption of the power supply
12	Accuracy of controls and instruments, hazardous outputs	Accuracy, usability (12.2), alarm systems (12.3), protection against hazardous output
13	Hazardous situations and fault conditions	Specific hazardous situations, single fault conditions
14	Programmable electrical medical systems (PEMS)	Documentation, risk management plan, development life cycle, problem resolution, requirement specification, architecture, verification, validation, modification, network and data coupling
15	Construction	Arrangement of controls, serviceability, mechanical strength, components and general assembly, mains supply transformers
16	ME systems	Accompanying documents, power supply, enclosures, separation devices, leakage currents, mechanical hazards, connections and wiring
17	Electromagnetic compatibility	Points to the EMC collateral, IEC 60601-1-2

Essential performance (subclause 4.3) is not every function of the device. It is the performance whose loss or degradation would lead to an unacceptable risk, and it is identified through the risk management process. That is why two otherwise similar devices can carry different essential performance lists.

Means of protection: MOOP and MOPP

The third edition separates the means of protection against electric shock by the person protected: a means of operator protection (MOOP) or a means of patient protection (MOPP). Clause 8 has separate tables for each: Table 6 (test voltages for solid insulation forming a means of protection), Table 7 (test voltages for MOOP), Table 12 (creepage distances and air clearances providing MOPP) and Tables 13, 15 and 16 (air clearances and creepage distances providing MOOP). Patient leakage current limits sit in Tables 3 and 4 and depend on the applied part type (B, BF or CF), in normal and single fault condition.

Values for creepage and clearance depend on working voltage, pollution degree, material group and altitude (Tables 8 and 9 are the altitude factors and material groups), so any one-line summary is a simplification. The values power supply makers commonly quote for mains-connected supplies are:

Level	Insulation	Test voltage	Creepage
1 MOOP	Basic	1500 V AC	2.5 mm
2 MOOP	Double	3000 V AC	5.0 mm
1 MOPP	Basic	1500 V AC	4.0 mm
2 MOPP	Double	4000 V AC	8.0 mm

Secondary source: power supply manufacturer white paper (CUI, hosted by Bel Fuse). The governing figures are those of the clause 8 tables for the actual working voltage.

The rule that applies everywhere is two means of protection between a hazardous voltage and the person: two MOPP toward the patient through an applied part, two MOOP toward the operator. Many MOOP requirements originally came from IEC 60950-1, which is why a power supply certified to an IT equipment standard may satisfy MOOP but not MOPP. Amendment 2 brought IEC 62368-1:2018 into the normative references, and Annex A of edition 3.2 includes a table of typical scenarios for the use of equipment complying with IEC 62368-1.

Collateral standards 60601-1-X

Editions below are those the FDA lists as recognised. The right-hand column is the status under the MDR on 7 October 2026.

Reference	Topic	Edition recognised by the FDA	Cited under the MDR?
IEC 60601-1-2	Electromagnetic disturbances, requirements and tests	Ed. 4.1 2020-09 (19-36, partial)	No
IEC 60601-1-3	Radiation protection in diagnostic X-ray equipment	Ed. 2.2 2021-01 (12-336)	No
IEC 60601-1-6	Usability	Ed. 3.2 2020-07 (5-132)	No
IEC 60601-1-8	Alarm systems	Ed. 2.2 2020-07 (5-131)	No
IEC 60601-1-9	Environmentally conscious design	Not found in the 60601-1 search of the FDA database	No
IEC 60601-1-10	Physiologic closed-loop controllers	Ed. 1.2 2020-07 (19-37)	No
IEC 60601-1-11	Home healthcare environment	Ed. 2.1 2020-07 (19-38, partial)	No
IEC 60601-1-12	Emergency medical services environment	Ed. 1.1 2020-07 (19-39)	No

Clause 1.3 makes the applicable collaterals normative together with the general standard, so a 60601-1 declaration without them is incomplete whatever the regulator. What changes under the MDR is only the legal effect: using EN 60601-1-2 or EN 60601-1-6 there is a way to demonstrate conformity with the general safety and performance requirements, not a route to presumption of conformity.

Particular standards 60601-2-XX and 80601-2-XX

The particular series covers individual device types. A sample, with titles as recorded in the FDA database or the Official Journal:

• IEC 60601-2-1 Electron accelerators in the range 1 MeV to 50 MeV (edition 4.0, 2020)
• IEC 60601-2-2 High frequency surgical equipment (edition 6.1, 2023)
• IEC 60601-2-4 Cardiac defibrillators (edition 3.1, 2018)
• ISO 80601-2-12 Critical care ventilators (third edition, 2023), which replaced IEC 60601-2-12
• ISO 80601-2-13 Anaesthetic workstations (second edition, 2022), which replaced IEC 60601-2-13
• IEC 60601-2-24 Infusion pumps and controllers
• IEC 60601-2-25 Electrocardiographs (edition 2.0, 2011)
• IEC 60601-2-27 Electrocardiographic monitoring equipment (edition 3.0, 2011)
• IEC 60601-2-37 Ultrasonic medical diagnostic and monitoring equipment (edition 3.0, 2024)
• IEC 60601-2-44 X-ray equipment for computed tomography (edition 3.2, 2016)
• IEC 60601-2-47 Ambulatory electrocardiographic systems (edition 2.0, 2012)
• IEC 60601-2-83 Home light therapy equipment, the only particular standard cited under the MDR (EN IEC 60601-2-83:2020 with A11:2021 and A1:2025)

Where no particular standard exists for a device type, the general standard and the applicable collaterals still apply, alongside the standards of the relevant domain (software, biocompatibility, sterilisation).

Risk management (ISO 14971)

The introduction of edition 3.2 is explicit: "Compliance with this edition of IEC 60601-1 requires that the MANUFACTURER have in place a RISK MANAGEMENT PROCESS complying with parts of ISO 14971 (see 4.2)." The risk management file is therefore an input to the test campaign, not an appendix to it. Several requirements of the standard are resolved through it:

• the identification of essential performance (4.3),
• alternative risk control measures or test methods (4.5),
• the single fault conditions to consider (4.7 and clause 13),
• the PEMS risk management plan and process (14.3 and 14.6).

Under the MDR, EN ISO 14971:2019 with A11:2021 is a cited harmonised standard (entry 16 of the annex to Implementing Decision (EU) 2021/1182). See the risk management page for the method itself.

Couplings with IEC 62366-1 and IEC 62304

Usability. Subclause 12.2 of the general standard covers usability of ME equipment and leads to the collateral IEC 60601-1-6, which itself works with IEC 62366-1 (usability engineering). In the MDR, use error and ergonomic design are addressed in Annex I, section 5, and devices for use by lay persons in section 22. Neither EN 62366-1 nor EN 60601-1-6 is cited under the MDR on 7 October 2026.

Software. IEC 62304:2006 with Amendment 1:2015 is a normative reference of edition 3.2, and clause 14 sets the PEMS requirements (documentation, risk management plan, development life cycle, problem resolution, verification, validation, modification, network connection). IEC 62304 assigns a software safety class (A, B or C) that sets how much of its process applies. EN 62304 is not cited under the MDR either.

For the terms used here (essential performance, single fault condition, applied part B/BF/CF, MOOP, MOPP, PEMS), see the glossary.

What a 60601-1 test campaign covers

A campaign is normally run by a laboratory accredited to ISO/IEC 17025 with the relevant standards in its scope. Following the structure of the standard, it typically combines:

• document review: risk management file, essential performance, classification (clause 6), list of means of protection, applicable collateral and particular standards,
• marking and accompanying documents (clause 7),
• electrical tests (clause 8): dielectric strength for each means of protection, leakage currents in normal and single fault condition, creepage and clearance measurement,
• mechanical, radiation and thermal tests (clauses 9 to 11),
• fault condition tests (clause 13),
• PEMS review against clause 14 and the IEC 62304 file,
• EMC tests against IEC 60601-1-2, often in a separate EMC laboratory,
• usability against IEC 60601-1-6 and the IEC 62366-1 file.

Before ordering tests, check that the particular standard you need is in the accreditation scope of the laboratory, not only the general standard.

Working on the normative scoping of a medical-electrical project ahead of a 60601-1 campaign for a real product? AESTECHNO can audit your design and certification plan. Get in touch

Relation to the MDR: what the Official Journal actually cites

Article 8(1) of Regulation (EU) 2017/745 gives presumption of conformity to devices that conform to harmonised standards whose references are published in the OJEU. For the MDR, those references are kept in the annex to Implementing Decision (EU) 2021/1182, amended ten times up to Decision (EU) 2026/1231. The entries that matter for medical electrical equipment, as consolidated on 17 June 2026:

Entry	Reference cited	Added or changed by	Note
14	EN IEC 60601-2-83:2020, EN IEC 60601-2-83:2020/A11:2021	Original list	Deleted with effect from 15 December 2027 (Decision 2026/1231, Article 2)
14a	EN IEC 60601-2-83:2020, /A11:2021, /A1:2025	Decision (EU) 2026/1231	Replacement entry, applies from 17 June 2026
16	EN ISO 14971:2019, EN ISO 14971:2019/A11:2021	Decision (EU) 2022/757	Risk management
65	EN 60601-1:2006, EN 60601-1:2006/A13:2024	Decision (EU) 2026/1231	First citation of EN 60601-1 under the MDR (recital 5 of 2026/1231)

Three consequences follow:

• The cited reference is not edition 3.2. Entry 65 lists the 2006 EN with the European amendment A13:2024. A1:2013 and A2:2021 are not in the entry. Presumption of conformity attaches to the references as listed.
• No collateral is cited. EN 60601-1-2, EN 60601-1-6, EN 60601-1-8 and the others do not appear, nor do EN 62304 and EN 62366-1. Applying them remains the normal way to show the state of the art, but not with presumption.
• The absence of a harmonised standard does not bar placing on the market. It shifts the burden of proof: the manufacturer shows conformity with the general safety and performance requirements by other means.

For the regulation itself, see the MDR guide and the IVDR guide. For CE marking in general, see the CE page and the harmonised standards.

Relation to the FDA: two recognitions

The FDA Recognized Consensus Standards database has two entries for the general standard:

Recognition	Standard	Entry date	Extent	Condition
19-49	IEC 60601-1 Edition 3.2 2020-08 consolidated version	3 April 2023	Complete	Declaration of conformity accepted "when the US national differences are applied" (ANSI/AAMI ES60601-1, or the IECEE test report attachment for US national differences)
19-46	ANSI/AAMI ES60601-1:2005/(R)2012 & A1:2012, C1:2009/(R)2012 & A2:2010/(R)2012, including AMD2:2021	30 May 2022	Complete	US modified adoption (ANSI/AAMI)

Both are flagged as included in ASCA, the FDA accreditation scheme for conformity assessment. A manufacturer can therefore declare conformity to the IEC text itself, as long as the US national differences are applied, and does not have to switch to the AAMI document. The FDA guidance on the appropriate use of voluntary consensus standards in premarket submissions (September 2018) is the reference for how such declarations are made in a 510(k), De Novo or PMA.

The practical consequence for a device sold in both markets: the FDA recognises edition 3.2, while the reference cited in the OJ under the MDR is the EN 2006 text with A13:2024. Map the two in the test report rather than assuming one covers the other.

Pitfalls observed in practice

• Treating edition 3.2 and the OJ reference as the same document. They are not, see entry 65 above.
• Claiming presumption of conformity from a collateral standard under the MDR. None is cited today.
• Citing superseded particulars, for example IEC 60601-2-12 or IEC 60601-2-13 instead of ISO 80601-2-12 and ISO 80601-2-13.
• Not listing the applied collaterals in the declaration, contrary to the recommendation in clause 1.3.
• Empty or tautological essential performance. "The device must work correctly" is not an essential performance.
• Assuming an IT equipment power supply covers patient protection. IEC 62368-1 or IEC 60950-1 approval does not give MOPP.
• Checking only the general standard in the laboratory scope when a particular standard is needed.

Claims the texts contradict

Common claim (including earlier versions of this page)	What the text says
"EN 60601-1 harmonised under the MDR is edition 3.2"	Entry 65 of the annex to Decision 2021/1182 lists EN 60601-1:2006 with A13:2024 only (Decision 2026/1231)
"IEC 60601-1 and its collateral standards are harmonised under the MDR"	On 17 June 2026 the only 60601 entries are EN 60601-1 (65) and EN IEC 60601-2-83 (14 and 14a)
"60601-1-6 is required for presumption of conformity with MDR usability requirements"	EN 60601-1-6 is not cited under the MDR; it gives no presumption there
"Edition 3.1 is the reference used in almost every regulatory recognition"	The FDA recognises edition 3.2 (19-49) and ES60601-1 with AMD2:2021 (19-46)
"A US manufacturer declares to ANSI/AAMI ES60601-1 rather than to the IEC version"	19-49 accepts a declaration to IEC 60601-1 ed. 3.2 when the US national differences are applied
"A particular standard prevails only where it explicitly deviates"	Clause 1.4: a requirement of a particular standard takes priority over the general and applicable collateral standards; it may modify, replace or delete requirements
"60601-1 is maintained by TC 62"	It is maintained by subcommittee SC 62A of TC 62
"IEC 60601-2-1 covers X-ray equipment for radiotherapy"	Its title covers electron accelerators in the range 1 MeV to 50 MeV
"IEC 60601-2-12 is the ventilator standard"	Critical care ventilators are covered by ISO 80601-2-12 (third edition 2023)
"A single reinforced insulation never replaces two means of protection; an isolation transformer counts as one MOP; a functional earth can be a second MOP"	The clause 8 insulation tables give values for one and for two means of protection, and power supply makers specify the two-MOPP level as a single double-insulation barrier (4000 V AC, 8 mm); subclause 8.6 distinguishes functional earthing from protective earthing
"The 4th edition will be published by the end of the decade"	IEC forecasts edition 4.0 for 6 April 2029, with edition 3.2 stable until 2028

Further reading

Risk management, which IEC 60601-1 leans on throughout, has its own page: ISO 14971, IEC 31010, FMEA and FTA.

Not covered on this site, and worth going to the standards themselves for: the collateral IEC 60601-1-2 on EMC in medical environments and how it meets the general EMC regime; usability engineering under IEC 62366-1 and the collateral IEC 60601-1-6; and medical software under IEC 62304 with its safety classes A, B and C.

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Sources & references

1. IEC 60601-1:2005+AMD1:2012+AMD2:2020 CSV, edition 3.2, catalogue entry and lifecycle, IEC webstore.iec.ch/publication/67497
2. IEC 60601-1 edition 3.2, official preview (foreword, introductions to Amendments 1 and 2, clauses 1 and 2, table of contents), IEC webstore.iec.ch/en/iec_catalog/product/preview/?id=L3B1Yi9wZGYvcHJldmlldy9pbmZvX2llYzYwNjAxLTF7ZWQzLjJ9ZW4ucGRm
3. IEC 60601-1-2:2014+AMD1:2020 CSV, edition 4.1 (EMC collateral), IEC webstore.iec.ch/en/publication/67554
4. IEC TC 62, Electrical equipment in medical practice, IEC www.iec.ch/dyn/www/f?p=103:7:::::FSP_ORG_ID:1245
5. Commission Implementing Decision (EU) 2026/1231 of 11 June 2026 amending Implementing Decision (EU) 2021/1182 (entry 65, EN 60601-1), Official Journal of the European Union data.europa.eu/eli/dec_impl/2026/1231/oj
6. Implementing Decision (EU) 2021/1182, consolidated text of 17 June 2026 (harmonised standards under the MDR), EUR-Lex eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02021D1182-20260617
7. Regulation (EU) 2017/745 on medical devices (MDR), EUR-Lex eur-lex.europa.eu/eli/reg/2017/745/oj
8. Harmonised standards for medical devices, European Commission health.ec.europa.eu/medical-devices-topics-interest/harmonised-standards_en
9. FDA recognition 19-49, IEC 60601-1 edition 3.2 2020-08 with US national differences, FDA www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfStandards/detail.cfm?standard__identification_no=44029
10. FDA recognition 19-46, ANSI/AAMI ES60601-1 including Amendment 2 (2021), FDA www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfStandards/detail.cfm?standard__identification_no=43309
11. FDA Recognized Consensus Standards database for medical devices, FDA www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfStandards/search.cfm
12. ISO 14971, Medical devices, Application of risk management to medical devices, ISO www.iso.org/standard/72704.html
13. IEC 62366-1, Medical devices, Application of usability engineering to medical devices, IEC webstore.iec.ch/en/iec-search/result?q=IEC%2062366-1
14. Power supply safety standards, agencies and marks (secondary source: power supply manufacturer white paper, MOOP/MOPP table), CUI / Bel Fuse www.belfuse.com/media/documents/whitepapers/power-supply-safety-standards-agencies-and-marks.pdf