Circular Cable Assemblies

Part Number	Description / PDF	Quantity
700000892 Lumberg Automation	RKMWV 3-610/2M	0
600005588 Lumberg Automation	RKF 5-1/2-14/10M	0
900004348 Lumberg Automation	0985 YM57530 100/25M	0
11396 Lumberg Automation	RSTS 8X-RJ45 G-478/15 M	0
900004988 Lumberg Automation	0935 660 301/2M	0
500002827 Lumberg Automation	RKW 30-741/15F	0
700000963 Lumberg Automation	RKMV 4-500/20 M	0
934853023 Lumberg Automation	RST 4T-RKT 4T-740/5 M	0
500004328 Lumberg Automation	RK 100M-752/23M	0
600002105 Lumberg Automation	RST 4 U-RKT 4 U-674/3F	0
500000604 Lumberg Automation	RSF 90M-623/1F	0
600004468 Lumberg Automation	RKF 5-1/4-NPT/0.5M	0
900004060 Lumberg Automation	0985 806 100/40M	6
511000269 Lumberg Automation	RSWPA 4-RKWPA 4-805/14M	0
934851052 Lumberg Automation	RSTS 4T-918/5 M	0
600000320 Lumberg Automation	RKT 8-09/2 M	0
511000842 Lumberg Automation	RSP 3-RKPA 3-802/14M	0
900001747 Lumberg Automation	0935 613 301/0.6M	0
500003301 Lumberg Automation	RKF 401-639/15F	0
900001957 Lumberg Automation	0935 613 303/10M	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.