ARK-trol® RPX Series Explosionproof Special Purpose Power Connectors


ARK-trol® RPX Connectors are used:

  • In areas which are hazardous due to the presence of gasoline or gases or vapors of equivalent hazard
  • For connection of devices ranging from simple lighting units, power tools and similar portables requiring only a power circuit to sophisticated control and instrumentation assemblies requiring disconnect
Amperages 10; 20; 30; 60A
Types Grounded or ungrounded
Configurations 4W 5P; 5W 5P; 2W 3P; 3W 4P; 3W 3P; 4W 4P
Voltages 250; 480; 600VAC, 50-400 Hz
Contact Sizes #12; #10; #4
Shell Sizes 017; 021; 033
Hub Sizes 3/4"; 1"; 1 1/4"
Back Box and Adapter Material Feraloy® iron alloy


  • High strength impact extruded aluminum shell parts
  • "Tri-Disc" insert assemblies
  • Contacts snap in after termination
  • Positive polarization
  • Interchangeability of inserts in each shell size
  • Grounding contacts, where used, make first and break last
  • The RPX "Time-Slot" delayed action feature prevents complete withdrawal of the plug in one continuous movement, eliminating the possibility of a circuit-breaking arc occurring in a hazardous area