Heavy Duty Connectors

Heavy Duty Connectors - Contacts

Part Number	Description / PDF	Quantity
11192000 LAPP	CONN CNT GLD PIN 2.5MM 20AWG	500
11190000 LAPP	CONN CNT SLV PIN 2.5MM 20AWG	1200
11190200 LAPP	CONN CNT SLV PIN 2.5MM 16AWG	1000
44423250 LAPP	CONN CNT SLV PIN 4MM 16AWG	300
11190400 LAPP	CONN CNT SLV PIN 2.5MM 12AWG	845
44423259 LAPP	CONN CNT SLV SKT 4MM 8AWG	180
44423248 LAPP	CONN CNT SLV SKT 8MM 2AWG	30
1121830C LAPP	CONN CNT SLV SKT MC 2.5MM 14AWG	199
44423247 LAPP	CONN CNT SLV SKT 8MM 4AWG	30
11197000 LAPP	CONN CNT GLD SKT 2.5MM 20AWG	100
13163200 LAPP	CONN CNT SLV SKT 1.6MM 18AWG	984
13163100 LAPP	CONN CNT SLV SKT 1.6MM 20AWG	350
11221000 LAPP	CONN CNT SLV PIN 1.5MM 20-16AWG	1300
13162600 LAPP	CONN CNT GLD PIN 1.6MM 20AWG	1025
13163000 LAPP	CONN CNT SLV SKT 1.6MM 26-22AWG	500
13162500 LAPP	CONN CNT GLD PIN 1.6MM 26-22AWG	150
44423242 LAPP	CONN CNT SLV PIN 8MM 8AWG	50
11192100 LAPP	CONN CNT GLD PIN 2.5MM 18AWG	200
44423256 LAPP	CONN CNT SLV SKT 4MM 14AWG	280
44423260 LAPP	CONN CNT HLDR PIN COAX 1.6MM	20

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