Circular Cable Assemblies

Image	Part Number	Description / PDF	Quantity	Rfq
	600003103 Lumberg Automation	RST 3-RKM 3-224/1 M	0
	934966207 Lumberg Automation	RSTS 8Y-RKHS 8Y-922/10 M	0
	934853086 Lumberg Automation	RSTS 4S-RKTS 4S-915/10 M	0
	600005782 Lumberg Automation	RKT 4-633/4M	0
	934735012 Lumberg Automation	WRST 4-521/25 M	0
	934894021 Lumberg Automation	RSM 5-RKM 5-293/3 M	0
	11431 Lumberg Automation	RKWT 3 U-12-19/5 M	0
	500003337 Lumberg Automation	RSRK 40-839/30M	0
	900000416 Lumberg Automation	0985 656 100/20M	0
	934737061 Lumberg Automation	WRSMV 4-WRKMV 4-521/0,6 M	0
	600005741 Lumberg Automation	RSWT 3-RKT 4-3-632/8M	0
	700000149 Lumberg Automation	RSMV 4-RKMV 4-07/2 M	0
	600000908 Lumberg Automation	RSWT 4-29/5 M	0
	600002923 Lumberg Automation	RST 4-RKMV 4-225/2 M	0
	511000499 Lumberg Automation	RSP 3-800/12M	0
	934853096 Lumberg Automation	RSTS 4T-RKTS 4T-722/2 M	0
	600005997 Lumberg Automation	RKT/LED F 4-679/8M	0
	934898055 Lumberg Automation	RSWT 5-RKM 5-293/10 M	0
	511000173 Lumberg Automation	RKWP 4-803/6M	0
	511000190 Lumberg Automation	RSPA 4-RKPA 4-805/1.5M	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.