IEC 61076-2-106:2011

Overview

IEC 61076-2-106:2011 is an international standard provided by the International Electrotechnical Commission (IEC) that specifies product requirements for circular connectors used in electronic equipment. This part of the IEC 61076 series focuses on detailed specifications for M16 x 0,75 circular connectors with screw-locking mechanisms. It covers connectors with degrees of protection IP40 and IP65/67, making them suitable for various industrial and measurement applications where reliable environmental protection is essential.

These circular connectors are designed primarily for industrial process measurement and control systems. They include fixed and free connector types, available as rewireable or non-rewireable variants. The male connectors feature round contacts of either 1.5 mm or 1.0 mm diameter, ensuring reliable electrical performance.

Key Topics

• Connector Types and Styles
  The standard defines multiple styles of fixed and free connectors, differentiated by mounting type (front or rear), contact gender (male or female), and protection level (IP40 or IP65/67). Protective caps and accessories for these connectors are also specified.

• Degree of Protection (IP Rating)
  The IEC 61076-2-106 standard ensures connectors meet IP40 for basic protection against solids and limited ingress, or IP65/67 for robust protection against dust and water, suitable for harsh environments.

• Mechanical and Electrical Characteristics
  Detailed mechanical requirements such as insertion/withdrawal forces, contact retention, vibration and shock resistance are outlined. The electrical characteristics include rated voltage, rated impulse voltage, current-carrying capacity, insulation resistance, and contact resistance values.

• Dimensions and Interface Specifications
  The standard provides comprehensive dimensional data for interface compatibility, including panel cut-out dimensions and pin location for different connector variants.

• Testing and Compliance
  A full test schedule covers preliminary tests, dynamic/climatic conditions, mechanical endurance, electrical load, chemical resistivity, and connection methods to guarantee performance and safety.

Applications

IEC 61076-2-106:2011 connectors are widely used in:

• Industrial Process Measurement and Control
  Their robust IP65/67-rated versions are ideal for factory automation, instrumentation, and control systems exposed to dust, dirt, and moisture.

• Electronic Equipment Connections
  Ensures secure, reliable electrical connections in diverse electronics requiring screw-locking circular connectors with standardized dimensions.

• Harsh Environment Installations
  The IP65/67 variants provide secure connections for outdoor or industrial environments where exposure to contaminants and water is expected.

• Field Wiring and Maintenance
  The availability of rewireable and non-rewireable free connectors supports ease of installation and maintenance in the field.

Related Standards

• IEC 61076-2 Series
  Other parts cover additional circular connector sizes and styles, extending the scope beyond M16 connectors.

• IEC 60529
  Defines the IP (Ingress Protection) rating system referenced extensively in IEC 61076-2-106 for environmental protection requirements.

• IEC 60228
  Specifies standard conductor sizes and properties which may be applicable for cables terminated by connectors.

• Industry-Specific Standards
  Depending on application, connectors conforming to IEC 61076-2-106 may also comply with additional industrial automation or instrumentation requirements.

Keywords: IEC 61076-2-106, circular connectors, M16 x 0.75 connectors, screw-locking connectors, IP40 connectors, IP65/67 connectors, industrial process measurement, electronic equipment connectors, connector dimensions, ingress protection, electrical connector standards.