Circular Cable Assemblies

Part Number	Description / PDF	Quantity
44438 Lumberg Automation	RKMV 4-225/15 M	0
511000893 Lumberg Automation	RSP 3-RKP 3-800/10M-R	0
600005671 Lumberg Automation	RKWT 4-3-610/8M	0
900002595 Lumberg Automation	0985 607 500/20M	0
600003273 Lumberg Automation	RST 4-RKT 4-225/1,5 M	0
934753018 Lumberg Automation	WRSMV3-WRKWT/LED A 4-3-520/15M	0
511000418 Lumberg Automation	RSP 3-RKP 3-800/50M	0
500002731 Lumberg Automation	RSRK 501-742/12F	0
900002214 Lumberg Automation	0985 706 100/0.3M	0
600005395 Lumberg Automation	RST 4-RKT 4-643/20M	0
511000775 Lumberg Automation	RSFP 3-1/2NPT-800/0.5M	0
934729002 Lumberg Automation	WRKMV 3-520/5 M	0
600006347 Lumberg Automation	RSWT 3-RKWT 4-3-659/0.3M	0
511000839 Lumberg Automation	RSP 3-RKPA 3-802/8M	0
91617 Lumberg Automation	RKWU 19-S3792/50 M	0
934853099 Lumberg Automation	RSTS 4T-RKTS 4T-918/0,3 M	0
900001447 Lumberg Automation	0985 342 104/10M	8
900005239 Lumberg Automation	RSWTN 4D-RSTN 4D-806/0.3M	0
600005587 Lumberg Automation	RKF 5-1/2-14/8M	0
900004182 Lumberg Automation	0985 806 124/35M	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.