Circular Cable Assemblies

Image	Part Number	Description / PDF	Quantity	Rfq
	511000249 Lumberg Automation	RSWPA 4-RKPA 4-805/20M	0
	500002843 Lumberg Automation	RSRK 501-742/15F	0
	500004355 Lumberg Automation	RS 501-877/11M	0
	600005679 Lumberg Automation	RKWT 4-3-731/3M	0
	15926 Lumberg Automation	RKWT/LED A 4-3-224/110 M	0
	934727003 Lumberg Automation	0975 254 130/1 M	0
	511000413 Lumberg Automation	RSP 3-RKP 3-800/25M	0
	511000032 Lumberg Automation	RSP 4-RKWP 4-803/3M	0
	12076 Lumberg Automation	RST 5-VAD 3C-4-2-228/1,5 M	0
	511000616 Lumberg Automation	RSPA 3-RKWPA 3-802/15M	0
	500001342 Lumberg Automation	RSW 20-603/5M	0
	101861 Lumberg Automation	ASB 2-RKWT 4-3-224/6 M	0
	934731001 Lumberg Automation	WRSMV 3-520/2 M	0
	934809002 Lumberg Automation	RSTS 8X-478/5 M	0
	600003676 Lumberg Automation	PRKT 5-56/5 M	0
	600005850 Lumberg Automation	RSWT 4-RKT 4-679/8M	0
	511000186 Lumberg Automation	RKWP 4-803/45M	0
	500003400 Lumberg Automation	RSRK 100M-S4677/6M	0
	600001839 Lumberg Automation	RSWT 5-RKT 5-644/0.6M	0
	511000467 Lumberg Automation	RSWP 3-RKWP 3-800/1.5M	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.