HARTING Circular Connector, 4 Contacts, Cable, M12 Connector, Plug, Male, IP65, IP67, Circular Connectors M12 Series

Harting Circular connectors M12 Series Circular Connector, 4 Contacts, 4A Current - 21031111405

This circular connector is a four-contact M12 plug designed for cable mounting in industrial control and automation environments. It provides a straight A-coded Interface for signal connections and fits applications requiring a compact, robust connector with moderate current and voltage handling in varied temperature and ingress conditions.

Features & Benefits

• Four gold-plated contacts deliver low-resistance signal transmission
  Brass contacts plated with gold over nickel reduce corrosion risk
  IDC termination enables quick, reliable cable assembly
  Rated for 4A to support moderate current sensor and actuator loads
  Operates from -40 to 85°C for wide temperature tolerance
  Polyamide housing with IP65 and IP67 ensures dust and water protection

**Applications**

• Suitable for sensor cabling in factory automation systems
  Ideal for actuator connections on production machinery
  Used with distributed I/O modules in control cabinets
  Can be used for fieldbus or device-level network links
  Used for temporary test rigs requiring quick assembly and disassembly

What contact material and finishing are used to improve electrical performance?

Contacts are brass with a gold-over-nickel plating that enhances conductivity and provides a wear-resistant finish for repeated mating cycles.

How does the connector cope with outdoor washdown or accidental immersion?

The connector housing is polyamide and rated to both IP65 and IP67, allowing protection against jets of water and temporary immersion.

What mounting and orientation options are available for installation?

This unit uses a cable-mount configuration and has a straight plug orientation for inline cabling runs.

What electrical ratings determine suitable circuit designs?

The plug is specified for 32V nominal operation and a continuous current of 4A, suitable for many low-voltage signal and control circuits.