M1 – Circular Modular Connectors

4 and 6 pole connector with PE

M1 series
M connectors are modular. The modular connector design allows many variations of assembly.
M1 series
M connectors are modular. The modular connector design allows many variations of assembly.
M series universal industrial connectors are designed for safety and reliability in harsh ambient conditions.

M1 series universal modular connectors offer a customized and cost-effective realisation of your application.
M1 series circular connectors are dustproof and water pressure tight. They are also resistant to the effects of aggressive liquids and vapors as well as the extremes of temperature in a range from -50° C up to +100° C.


  • Contact arrangement: 4 + PE and 6 + PE
  • Contacts: High-quality machined contacts, silver or gold plated, crimped connections
  • Modular design
  • Rugged shell made of impact resistent plastic
  • Functional threaded coupling with protection degree IP67 / IP69K
  • Electrical and mechanical characteristics to IEC 61984
  • Approvals: UL, EAC


You can use our M1 series connectors for various applications, especially where high reliability under harsh environmental conditions is important. Typical applications are: mining, ship-building, power plant construction, mechanical and traffic engineering, environmental technology or food processing. We hold numerous official approvals.


M1 Series
Number of contacts4+PE / 6+PE
Wire gaugeAWG 20 ... AWG 13 (0.5 ... 2.5 mm²)
Rated voltage at PD3, altitude correction factor 1 (IEC 60664-1)4+PE: 230 V/400 V 6+PE: 250 V
Current rating7.5 A ... 16 A
Contact resistance< 3 mΩ
Insulation resistance1 GΩ
IP rating (IEC 60529)IP67 / IP69K (mated/with protection cap)
Mechanical endurance5,000
Temperature range-50° C ... +100° C
Material, shellsPolyamide PA6.6 GF30, black
Material, insertsPolyamide PA6.6 GF30, black
Material, sealsNBR, CR, black
Shells, flammability ratingUL94V-0
Contact terminal typeCrimp
Contact materialCopper wrought alloy
Contact finishSilver / gold
CouplingThreaded coupling
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M1 – Circular Modular Connectors