IEC 60079-45 ignition systems: current status
The official IEC 60079-45:2025 catalogue page identifies Edition 1.0, published on August 27, 2025, with a displayed stability date of 2029. The current IEC 60079 series catalogue also lists IEC 60079-45:2025. A stability date supports IEC maintenance planning. It does not state that every product, engine or installation using the standard is approved.
The publication provides minimum construction and test requirements, together with manufacturer installation and maintenance recommendations, for electrical ignition systems and components in its scope. It supplements and modifies IEC 60079-0 and ISO/IEC 80079-41. Where Part 45 conflicts with those referenced documents, the Part 45 requirement takes precedence for its defined subject.
As of this review date, the official ISO catalogue records ISO/IEC FDIS 80079-41, the Part 41 draft on reciprocating internal combustion engines, as under development at the Final Draft International Standard stage. It must not be described as a published International Standard. Project teams should verify its live status and use only the documents that are legally and contractually applicable on the decision date.
What the public IEC scope includes
Part 45 applies only to electrical ignition systems or their individual components used on spark-ignited reciprocating internal combustion engines. The engine can be stationary while operating, or it can be installed in mobile machinery where the engine can be a potential ignition source. The public scope names gas compressors, electric power generators, forklift trucks and pumps as examples. An example is not an automatic approval for every machine of that type.
The following table is a purchasing screen based on the public IEC scope. It is not a substitute for the licensed standard or the exact product evidence.
| Scope question | Public Part 45 boundary | Buyer evidence to check |
|---|---|---|
| Engine principle | Spark-ignited reciprocating internal combustion engine | Engine description, ignition architecture and controlled drawings |
| Protection level | Parts of the ignition system provide EPL Gc | Complete marking, certificate or assessment route, and schedule where applicable |
| Gas group | Group IIB+H2, IIB or IIA | Exact group stated for the offered system and every assessed component |
| Secondary voltage | Normal operation no greater than 60 kV | Rated secondary voltage, operating limits and manufacturer data |
| Operating context | Stationary engines and relevant mobile machinery | Intended operation, machine function, classified-area basis and installation boundary |
| Deliverable boundary | Ignition system or individual ignition-system component | Bill of materials, model and suffix, interfaces, drawings, instructions and change status |
EPL Gc is not a synonym for a complete Zone decision. The MMAIATEX Equipment Protection Level guide explains the EPL concept, while the Zone 0, Zone 1 and Zone 2 guide explains gas-area terminology. The responsible engineering team must connect the site's classification and required protection level to the complete equipment evidence under applicable law.
What IEC 60079-45:2025 excludes
The public scope expressly excludes breaker-point ignition systems and magneto-type ignition systems because they would not be suitable for use in a hazardous area under this document. It also excludes road vehicles.
Low-voltage parts and electrical installation outside the ignition system are excluded. The IEC examples include various sensors and thermocouples, throttle actuators, fuel-control valves, the human-machine interface, their respective harnesses and wiring, and other items that may belong to the integrated control system but not to the ignition system. Exclusion from Part 45 does not mean those items are safe, optional or outside all regulatory requirements. It means another assessment basis is needed.
The standard's boundary also prevents a common evidence error. A Part 45 report for an ignition controller, coil or complete ignition system is not proof that the engine, compressor, generator, forklift or pump has been assessed as a complete package. Fuel, intake, exhaust, hot surfaces, mechanical ignition sources, control functions, electrical accessories, protective shutdowns and installation interfaces can require separate evidence.
Seven checks before accepting a Part 45 offer
1. Fix the exact supply boundary
Identify whether the offer is for one component, the complete ignition system, an engine, or a wider machine package. Record every included model, suffix, harness and interface. The purchase order and controlled drawings should use the same identity.
2. Confirm the engine and operating context
Document that the application uses a spark-ignited reciprocating engine within the stationary or mobile-machinery scope. Record the machine function and intended operating state. Do not extend the document to road vehicles or a different ignition principle.
3. Match EPL and gas group
Check the required EPL and gas group against the exact evidence for the offered item. IIB+H2, IIB and IIA are distinct entries in the Part 45 scope. A buyer should not upgrade or transfer a group by inference from a similar product name or photograph.
4. Verify the secondary-voltage limit
Confirm that normal secondary voltage is no greater than 60 kV and that the submitted rating belongs to the exact system configuration. The scope ceiling is not a declared rating for every item, and it does not remove the need to review insulation, connections, installation and maintenance requirements.
5. Separate excluded controls and accessories
List sensors, thermocouples, actuators, fuel valves, HMI hardware, external wiring and other integrated controls. For each excluded item, identify its own protection, conformity and installation evidence. Do not hide an unresolved interface inside the phrase engine control system.
6. Build an identity-linked evidence file
Keep current certificates or assessment records where the applicable route requires them, complete markings, schedules, drawings, test references, installation instructions, maintenance recommendations and deviation approvals. The MMAIATEX guide to verifying IECEx certificates and ATEX documents provides an identity-first review method. It does not validate an engine package by itself.
7. Control installation and later changes
Record cable and harness routing, terminations, earthing, environmental limits, inspection tasks, maintenance intervals and permitted replacement parts. Connect the ignition-system file to the installation evidence described in the MMAIATEX IEC 60079-14 buyer checklist. A changed coil, controller, connector, spark plug, harness, setting or engine interface may require fresh engineering and conformity review.
Part 45 evidence is not complete-engine approval
A procurement file should distinguish three layers. The first is the exact Part 45 ignition system or component. The second is the reciprocating engine and its other potential ignition sources. The third is the complete machine and site installation. Evidence at one layer cannot silently approve the others.
This distinction is especially important while ISO/IEC 80079-41 remains an FDIS under development. A draft reference can inform standards planning, but it is not a published International Standard and it cannot be presented as current certification proof. The responsible parties must identify the valid conformity route, accepted editions, national requirements and project specifications for the actual destination and date.
Current MMAIATEX certification status
MMAIATEX is the public brand of MMAIATEX Explosion-proof Technology (Zhejiang) Co., Ltd. The public About page states that ATEX, IECEx and CCC certification work is in progress. This article, a Part 45 reference, product image or component document does not establish certification, compliance or suitability for any MMAIATEX ignition system, engine or machine. Verify the exact legal manufacturer, model and suffix, complete marking, certificate scope, schedule, conditions and current controlled documentation before relying on a claim.
Safety and legal disclaimer
This article is general procurement information, not an ignition-system design, engine risk assessment, hazardous-area classification, conformity assessment, certificate, installation approval or legal opinion. Internal combustion engines can introduce electrical, mechanical, thermal, fuel, exhaust and control-system ignition hazards. Use the current licensed standards, applicable law, exact project records and competent engineering, safety and conformity professionals. Stop approval or work when the system boundary, rating, marking, document status or engine-package evidence is uncertain.
Contact MMAIATEX for an ignition-system evidence review
For an evidence checklist tied to a proposed model and engine-package boundary, contact MMAIATEX with the destination market, classification basis, required EPL and gas group, engine type, secondary voltage and available controlled documents.