IEC 61076-2-111-2017 PDF

Full title and description

Connectors for electrical and electronic equipment - Product requirements - Part 2-111: Circular connectors - Detail specification for power connectors with M12 screw-locking. This document specifies 4‑ to 6‑way circular M12 screw‑locking power connectors (fixed and free, rewireable or non‑rewireable) intended for power supply and power applications in industrial premises, with defined contact geometries, codings to prevent cross‑mating and rated currents and voltages appropriate for industrial power use.

Abstract

IEC 61076‑2‑111:2017 defines product requirements, dimensional information, ratings, marking and test schedules for M12 screw‑locking circular power connectors (4–6 contacts). It includes mechanical and electrical characteristics, compatibility and coding rules to avoid incorrect mating, and references to relevant test and safety standards used to verify performance and environmental protection. The 2017 edition was later superseded by a 2025 edition that updates technical details and ratings.

General information

• Status: Withdrawn / superseded (superseded by IEC 61076‑2‑111:2025).
• Publication date: 7 December 2017 (Edition 1.0).
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 31.220.10 (Plug‑and‑socket devices; connectors).
• Edition / version: Edition 1.0 (2017).
• Number of pages: 71 pages (2017 edition).

Scope

The 2017 edition covers 4‑ to 6‑way circular connectors with M12 screw‑locking for power applications, specifying contact arrangements (male round contacts Ø1.0 mm and Ø1.5 mm for different current ratings), electrical ratings (up to 16 A for the contacts in the 2017 text), dimensional details, codings to prevent mismating, marking, safety considerations and test schedules for verification in industrial environments.

Key topics and requirements

• Connector types and mechanical dimensions for M12 screw‑locking circular power connectors (4–6 poles).
• Contact geometries (male contacts Ø1.0 mm and Ø1.5 mm) and termination options (rewireable and non‑rewireable).
• Electrical ratings: current and voltage assignments (contact current ratings up to 16 A in the 2017 edition) and assigned voltages by coding.
• Coding schemes to prevent cross‑mating with other interfaces and between different codings.
• Performance, safety and environmental tests and references (mechanical and electrical tests, IP/degree of protection, creepage/clearance and insulation coordination).
• Marking, identification and compatibility levels aligned with IEC 61076‑1 and related product‑level requirements.

Typical use and users

Used by connector manufacturers, OEMs and designers of industrial automation and power equipment, procurement and standards/compliance engineers, test laboratories and installers specifying or verifying M12 power connector interfaces for machinery, factory systems and other industrial premises. The standard is intended to ensure interchangeability, safe ratings and reliable performance in industrial power applications.

Related standards

Commonly referenced standards and documents include IEC 61076‑1 (generic connector product requirements), IEC 61984 (connector safety requirements and tests), IEC 60529 (IP code for degrees of protection), IEC 60664‑1 (insulation coordination / creepage and clearance) and various IEC 60512/60529/60584 test methods cited in the normative references of the 2017 edition.

Keywords

M12, circular connector, power connector, screw‑locking, 4‑pole, 5‑pole, 6‑pole, contact Ø1.0 mm, contact Ø1.5 mm, coding, current rating, voltage rating, IEC 61076 series, industrial power connectors.

FAQ

Q: What is this standard?

A: IEC 61076‑2‑111:2017 is an IEC product standard giving the detail specification for M12 screw‑locking circular power connectors (4–6 poles), covering dimensions, ratings, codings and test requirements for those connector types.

Q: What does it cover?

A: It covers mechanical and dimensional specifications, electrical ratings, contact geometries and terminations, coding to avoid mismating, marking and a test schedule (mechanical, electrical and environmental) to verify performance in industrial power applications.

Q: Who typically uses it?

A: Connector manufacturers, OEM product designers, procurement and standards engineers, test laboratories and integrators working with industrial power connections and M12 interfaces.

Q: Is it current or superseded?

A: The 2017 edition has been superseded by IEC 61076‑2‑111:2025; the 2017 edition was withdrawn on 11 December 2025 when the 2025 edition was published. Users should reference the 2025 edition for the latest technical requirements.

Q: Is it part of a series?

A: Yes — it is part of the IEC 61076 series (product requirements for connectors for electrical and electronic equipment) and is used together with IEC 61076‑1 (generic specification) and other part‑specific documents (for example parts covering signal/data variants and other mechanical locking styles).

Q: What are the key keywords?

A: M12, circular power connector, screw‑locking, 4‑6 poles, contact geometry, coding, current rating, voltage rating, IEC 61076.