Circular Cable Assemblies

Image	Part Number	Description / PDF	Quantity	Rfq
	1300060673 Woodhead - Molex	MC 3P MP 6' 90D 18/3 PVC	0
	1300640269 Woodhead - Molex	QC 4P M/MFE ST/ST SK 20M 10/4	0
	1302000151 Woodhead - Molex	MAX-LOC GRIP-MACH F3 .625-.750	0
	1300100400 Woodhead - Molex	MC 3P MFE 6' 90/ST 16/3 PVC	0
	1200650567 Woodhead - Molex	MIC 4P M/MSPG 1-2 3-4 SPCL	0
	1300280416 Woodhead - Molex	MIC 5P M/MFE 8M 90/90 DROP FLE	0
	1300390171 Woodhead - Molex	MC/MIC 5P M/MFE 2M DROP	0
	1200661553 Woodhead - Molex	MIC 4P M/MFE 8M 90/ST 22/4PVC	0
	1200650928 Woodhead - Molex	MIC 4P M/MP 4M 22/4 PVC SS	0
	1200708154 Woodhead - Molex	MMC-8P-FE-REC-P/MTG-0.5M-PVC	0
	1300250560 Woodhead - Molex	MC 5P M/MFE 15M ST/ST MID	0
	1200740103 Woodhead - Molex	MIC 3P MR 1' 18/1 PVC	0
	1200730353 Woodhead - Molex	MIC 5P M/MFE 20' 90/90 18/5PVC	0
	1300061067 Woodhead - Molex	MC 4P MP 3' 16/4 SOO	0
	1300130094 Woodhead - Molex	MC 2P FR 12IN 16/1 PVC SS	0
	1200720553 Woodhead - Molex	MIC 5P M/MP 12' 22/5 PVC	0
	1300120269 Woodhead - Molex	MC 12P MFE 50' 90/90 16/12 PVC	0
	1300000069 Woodhead - Molex	QC 4P MP 3FT. 14/4 SO CORD	0
	1300060953 Woodhead - Molex	MC 4P FP 5M 18/4 IEC 90DEG N-M	0
	1300080263 Woodhead - Molex	MC 12P MP 32' 90D 16/12 PVC	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.