Circular Cable Assemblies

Image	Part Number	Description / PDF	Quantity	Rfq
	600001769 Lumberg Automation	PRKWT 4-07/5 M	0
	900004600 Lumberg Automation	0985 806 125/25M	0
	511000645 Lumberg Automation	RSWPA 3-RKPA 3-802/35M	0
	600005752 Lumberg Automation	RSWT 3-RKT 4-3-731/3M	0
	511000704 Lumberg Automation	RSWPA 3-802/8M	0
	700000474 Lumberg Automation	RSMV 3-RKMWV/LED A 3-224/5 M	0
	900001595 Lumberg Automation	0935 614 302/3M	0
	500004158 Lumberg Automation	RSRK 30-838/20M	0
	600001742 Lumberg Automation	RKWT 4-3-632/15M	0
	600005610 Lumberg Automation	RSWT 4-RKWT 4-637/4M	0
	600006452 Lumberg Automation	RSWT 8-RKT 8-661/2M	0
	600005704 Lumberg Automation	RST 3-RKT 4-3-645/3M	0
	26152 Lumberg Automation	RSFM 8/20/0,5 M	0
	500000714 Lumberg Automation	RS 30-601/2M	0
	59203 Lumberg Automation	RKMWV 4-225/3 M	0
	500003381 Lumberg Automation	RSRK 50-877/50M	0
	600001365 Lumberg Automation	RST 4-07/5 M	0
	511000596 Lumberg Automation	RSPA 3-RKPA 3-802/22M	0
	900016146 Lumberg Automation	RSTS 4D-RKTS 8-S57530/45M	0
	934703004 Lumberg Automation	RKWTS 4-182/2 M	0

Circular Cable Assemblies

1. Overview

Circular Cable Assemblies are engineered interconnect solutions designed to transmit electrical signals or power through circular-shaped connectors. These assemblies combine multiple wires or cables terminated with circular connectors, ensuring reliable connectivity in demanding environments. Their importance spans across industries requiring robust, high-density, and high-performance connections, particularly in applications where space constraints and environmental resilience are critical.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Circular Push-Pull	Quick-mating design with mechanical locking	Industrial automation, medical devices
Circular Threaded	Vibration-resistant threaded coupling	Aerospace, military equipment
Waterproof Circular	IP67+ sealing against liquids and dust	Outdoor telecom equipment, underwater sensors
High-Density Circular	Miniaturized contacts for compact designs	Avionics, robotics

3. Structure and Components

A typical circular cable assembly consists of:

Conductors: Copper/aluminum for signal/power transmission
Insulation: PVC/TPE/PUR jackets for dielectric protection
Shielding: Braided copper or foil for EMI/RFI protection
Connector Housing: Metal/plastic shells with precision contacts
Retention System: Latches, threads, or bayonet couplings

Modular designs allow customization with hybrid signal/power/RF configurations.

4. Key Technical Specifications

Parameter	Importance
Current Rating (Amps)	Determines power transmission capacity
Voltage Rating (Volts)	Defines dielectric strength and safety margins
Contact Resistance (m )	Impacts signal integrity and power efficiency
Operating Temperature (-40 C to +125 C)	Ensures reliability in extreme environments
Mating Cycles (1000-10,000)	Indicates mechanical durability
IP Rating (IP65-IP68)	Defines environmental protection level

5. Application Fields

Primary industries include:

Industrial Automation: PLCs, CNC machines, robotic arms
Telecommunications: 5G base stations, fiber optic enclosures
Medical Equipment: MRI scanners, patient monitoring systems
Aerospace: Avionics, flight control systems
Transportation: Rail signaling systems, EV charging stations

Case Study: In automotive manufacturing, circular assemblies enable high-vibration resistance connections in robotic welding cells operating 24/7.

6. Leading Manufacturers and Products

Manufacturer	Representative Product
TE Connectivity	DEUTSCH DT Series circular connectors
Amphenol	CIRCULAR C Series high-density connectors
Molex	Circular Rast 55 series for industrial control
Delphi	Weatherproof automotive circular connectors

7. Selection Guidelines

Key considerations:

Electrical requirements (current/voltage profiles)
Environmental conditions (temperature, moisture, chemical exposure)
Mechanical demands (vibration, mating cycles, cable bend radius)
Space constraints (connector size and orientation)
Industry-specific certifications (e.g., MIL-STD, UL, RoHS)

Recommend verifying compatibility with existing infrastructure and performing thermal cycling tests for critical applications.

8. Industry Trends

Emerging developments include:

Miniaturization while maintaining high contact density
Integration of fiber optics and high-speed data transmission
Adoption of composite materials for weight reduction
Growing demand for waterproof connectors in outdoor IoT deployments
Standardization of hybrid power/signal interfaces in EV charging

Market forecasts predict 8.2% CAGR through 2027 driven by industrial IoT and 5G infrastructure investments.