Heavy Duty Connectors

Heavy Duty Connectors - Contacts

Image	Part Number	Description / PDF	Quantity	Rfq
	0936010009 Woodhead - Molex	CONTACT H.D. CRIMP SKT 18-26AWG	0
	0936010502 Woodhead - Molex	S-M CX/50 M CONN 1P+SHLD 50 OHM	0
	0936010035 Woodhead - Molex	CONTACT H.D. CRIMP PIN 14-18AWG	0
	0936010063 Woodhead - Molex	PCB 10A SILVER FEM DOUBLE CONTAC	0
	0936010074 Woodhead - Molex	S-Q7/PCB GOLD MALE CONTACT	0
	0936010193 Woodhead - Molex	S-EHV CRIMP CONTACT MALE 0,50MM	0
	0936010457 Woodhead - Molex	200A MALE CRIMP CONT 25MM	0
	0936010474 Woodhead - Molex	MALE CRIMP CONTACT 70A 16 MM -	0
	0936010156 Woodhead - Molex	PCB 16A GOLD FEM DOUBLE CONTACT	0
	0506389128 Woodhead - Molex	CONTACT H.D CRIMP BLADE 14-16AWG	0
	0936010073 Woodhead - Molex	S-Q7/PCB SILVER MALE CONTACT	0
	0936010493 Woodhead - Molex	S-M PN3 F PNEUM. CNT D 3 TUBE W/	0
	0936010076 Woodhead - Molex	S-Q7/PCB GOLD 7P PCB ADAPT	0
	0936010414 Woodhead - Molex	40A FEM CONTACT X 10 MM WIRE SI	0
	0936010546 Woodhead - Molex	S-M CX/8 M CONN 4P+SHLD 5A	0
	0936010004 Woodhead - Molex	CONTACT H.D. CRIMP SKT 18-26AWG	0
	0936010031 Woodhead - Molex	CONTACT H.D. CRIMP PIN 14-18AWG	0
	0936010030 Woodhead - Molex	CONTACT H.D. CRIMP PIN 14-18AWG	0
	0936010012 Woodhead - Molex	CONTACT H.D. CRIMP SKT 14-18AWG	0
	0506370128 Woodhead - Molex	CONTACT H.D. CRIMP SKT 14-18AWG	0

Heavy Duty Connectors - Contacts

1. Overview

Heavy duty connectors - contacts are specialized electrical components designed to establish reliable conductive pathways in high-current, high-voltage, or harsh-environment applications. These contacts serve as critical interface points in power transmission systems, industrial machinery, and transportation infrastructure. Their importance continues to grow with advancements in electrification, renewable energy systems, and automated manufacturing processes.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Bolted Contacts	High mechanical stability, screw-terminal connections	Power distribution panels, heavy machinery
Blade Contacts	Quick-insert design with positive lock mechanism	Automotive systems, battery packs
Circular Contacts	360 rotational connectivity	Rotary unions, wind turbines
Printed Circuit Contacts	Surface-mount compatible with PCB integration	Industrial control systems, automation equipment

3. Structure and Components

Typical construction includes:

Contact body: Copper alloys (C18150, C11000) or aluminum alloys
Contact surface: Silver-plated or tin-coated for enhanced conductivity
Insulation housing: Thermoplastic (PBT) or thermoset materials
Locking mechanism: Bayonet, threaded, or spring-loaded systems
Environmental seals: IP65-rated gaskets and O-rings

Modular designs often incorporate replaceable contact inserts and integrated cooling channels.

4. Key Technical Specifications

Parameter	Typical Range	Importance
Current Rating	100A - 5000A	Determines power transmission capacity
Voltage Rating	600V - 15kV	Ensures dielectric safety
Contact Resistance	<0.1m - 0.5m	Impacts thermal performance
Temperature Range	-55 C to +150 C	Defines operational envelope
Insertion Force	50N - 200N	Affects mating durability

5. Application Fields

Energy: Power generation equipment, grid infrastructure
Transportation: Electric vehicles, rail systems, marine propulsion
Industrial: CNC machinery, welding robots, factory automation
Renewables: Wind turbine converters, solar inverters
Military/Aerospace: Avionics systems, defense equipment

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
TE Connectivity	XD Connector System	1500A rating, quick-make design
Amphenol Industrial	MAXRAD High Power	IP67 protection, 3-phase configuration
Delphi Automotive	EVP High Voltage Connector	800V capability, fault current protection

7. Selection Recommendations

Key considerations:

Current/voltage requirements with 20% safety margin
Environmental protection (IP rating, corrosion resistance)
Mating cycle requirements (1000-10,000+ cycles)
Compliance with standards (IEC 60999, UL 486A-B)
Thermal derating for ambient temperatures >40 C

Case study: For wind turbine generator connections, specify silver-plated contacts with IP65 sealing and vibration damping features.

8. Industry Trends

Current developments include:

Miniaturization while maintaining high current density
Integration with smart monitoring (IoT-enabled contacts)
Advanced coating technologies (graphene-enhanced surfaces)
Increased focus on recyclable materials
Hybrid designs combining power and signal transmission