Circular Cable Assemblies

Image	Part Number	Description / PDF	Quantity	Rfq
	1200651229 Woodhead - Molex	MIC 3P FP 5M 90D #18AWG SJOOW	0
	1200720826 Woodhead - Molex	MIC 3P M/MP 12FT. 18/3 PUR	0
	1200720189 Woodhead - Molex	MIC 3P FP 30' #22/3 AUTO	0
	1300060404 Woodhead - Molex	MC 3P FP 6' 18/3 TPE	0
	1300101257 Woodhead - Molex	MC 5P M/MFE 3M 16/5 PVC	0
	1300100688 Woodhead - Molex	MC 4P MFE 20' 90/ST #16 STOOW	0
	1200705240 Woodhead - Molex	MMC-5P-FE-REC-PG9-PVC 0.34 WIRE-	0
	1200660675 Woodhead - Molex	MIC 3P M/MFE 0.5M ST/ST DC #22	0
	1300130596 Woodhead - Molex	MC 6P MR 12IN 16/1 PVC SS 316	0
	1300070210 Woodhead - Molex	MC 8P MP 35' 16/8 PVC	0
	1200800415 Woodhead - Molex	MIC 3P MFE ULOCK 2M 90/ST 22/3	0
	1200660777 Woodhead - Molex	MIC/NC 3P M/MFE 5M 24AWG PVC	0
	1200720981 Woodhead - Molex	MIC 3P MP 2FT. 18/3AWG PVC AUTO	0
	1300640385 Woodhead - Molex	QC 4P M/MFE ST/ST DK 22M 10/4	0
	1300060050 Woodhead - Molex	MC 5P FP 3M ST 16/5 TPE	0
	1200660120 Woodhead - Molex	MIC 90/MC 4P M/MFE 2M 22/4 PVC	0
	1300280160 Woodhead - Molex	MIC 5P M/MFE 5M ST/ST SS DROP	0
	1300061686 Woodhead - Molex	MC 6P MP 20' 16/6 PVC	0
	1300620245 Woodhead - Molex	MC 4P M/MFE ST/ST 5M 14/4 GRAY A	0
	1300200100 Woodhead - Molex	CC 6P MP 18' 14/6 SO	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.