IEC 61076-2-116:2022

Overview

IEC 61076-2-116:2022 is an international standard published by the International Electrotechnical Commission (IEC) that defines product requirements for circular connectors, specifically size 15 connectors, featuring bayonet-locking mechanisms. These connectors are designed with up to 3 power contacts plus protective earth (PE), and auxiliary contacts. The power contacts support rated insulation voltages up to 630 V AC/DC and currents up to 20 A, while auxiliary contacts support up to 63 V AC/DC at 10 A. Typically used in industrial power supply and motor control applications, this standard specifies both fixed and free connectors that can be either rewireable or non-rewireable.

Key Topics

• Connector Type and Size: Circular connectors of size 15 with a bayonet-locking system ensuring secure and reliable connections.
• Electrical Ratings:
  • Power contacts: Rated insulation voltage up to 630 V AC/DC; rated current up to 20 A.
  • Auxiliary contacts: Rated insulation voltage up to 63 V AC/DC; rated current up to 10 A.
• Connector Variants: Includes fixed and free connector types, both rewireable and non-rewireable.
• Contact Construction: Male connectors feature round contacts with a diameter of 1.6 mm, suitable for power or signal applications.
• Mechanical and Environmental Characteristics:
  • Defined dimensional and mechanical durability criteria to ensure compatibility and reliability.
  • Compatibility levels according to IEC 61076-1.
  • Climatic category classification for environmental suitability.
• Safety and Marking: The standard outlines clear guidance on safety requirements and proper marking for identification of connectors.
• Testing Requirements:
  • Comprehensive test schedules including electrical, mechanical, climatic, and chemical resistance tests.
  • Tests for mechanical endurance, vibration, shock, and connection reliability.
• Interface and Mounting Options:
  • Includes various mounting styles such as square flange, single hole, and circular mounting.
  • Detailed interface dimensions and mating information to ensure interchangeability and ease of integration.

Applications

IEC 61076-2-116:2022 connectors are primarily applied in industrial environments where power supply and control of equipment are critical. The typical uses include:

• 3-Phase Asynchronous Motors: Power and control connections for motor starters and drives.
• Industrial Power Distribution: Feeding power circuits and auxiliary systems.
• Automation and Control Systems: Reliable connections of sensors, actuators, and control units requiring auxiliary contacts alongside power lines.
• Harsh Environment Equipment: Thanks to robust design and tested climatic compatibility, suitable for applications in challenging industrial settings.
• Electrical and Electronic Equipment: General use as per IEC requirements for durable, safe, and standardized connectors.

Related Standards

• IEC 61076-1: This standard defines compatibility levels and general requirements for connectors covered in IEC 61076 series, ensuring interoperability across products.
• IEC 60529: Specifies degrees of protection provided by enclosures (IP code), referenced for environmental resistance ratings.
• IEC 60352 Series: Provides methods for solderless connections, relevant for connectors utilizing crimp or screw termination.
• IEC 61984: Addresses safety requirements and tests specifically for connectors used in electrical equipment.
• IEC 62262: Specifies impact protection levels, often relevant for rugged connector designs in industrial applications.

IEC 61076-2-116:2022 reinforces international standards for circular connectors in power and auxiliary contact applications, focusing on safety, mechanical reliability, and environmental resilience. Its detailed specifications support manufacturers, designers, and engineers in choosing compliant connectors for industrial power and control systems, ensuring interoperability, performance, and long-term durability.

Keywords: IEC 61076-2-116, circular connectors, bayonet-locking connectors, industrial power connectors, electrical equipment connectors, power contacts, auxiliary contacts, IEC connectors size 15, IEC connector standards, motor control connectors, IEC electrotechnical standards.