Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
5580825 Würth Elektronik Midcom	CONN RING CIRC 3AWG M8 CRIMP	398
5580506 Würth Elektronik Midcom	CONN RING CIRC M5 CRIMP	904
5580835 Würth Elektronik Midcom	CONN RING CIRC 2AWG M8 CRIMP	1168
55803025 Würth Elektronik Midcom	CONN RING CIRC M3 CRIMP	0
5580610 Würth Elektronik Midcom	CONN RING CIRC 7AWG M6 CRIMP	472
5581050 Würth Elektronik Midcom	CONN RING CIRC 0AWG M10 CRIMP	82
5580616 Würth Elektronik Midcom	CONN RING CIRC M6 CRIMP	1467
5580406 Würth Elektronik Midcom	CONN RING CIRC M4 CRIMP	2265
5580404 Würth Elektronik Midcom	CONN RING CIRC M4 CRIMP	321
5581095 Würth Elektronik Midcom	CONN RING CIRC 000AWG M10 CRIMP	34
5580625 Würth Elektronik Midcom	CONN RING CIRC M6 CRIMP	524
5580510 Würth Elektronik Midcom	CONN RING CIRC 7AWG M5 CRIMP	371
55803015 Würth Elektronik Midcom	CONN RING CIRC M3 CRIMP	2501
5580516 Würth Elektronik Midcom	CONN RING CIRC M5 CRIMP	170
55804025 Würth Elektronik Midcom	CONN RING CIRC M4 CRIMP	567
5580870 Würth Elektronik Midcom	CONN RING CIRC 00AWG M8 CRIMP	88
5580635 Würth Elektronik Midcom	CONN RING CIRC 2AWG M6 CRIMP	739
5580850 Würth Elektronik Midcom	CONN RING CIRC 0AWG M8 CRIMP	428
5581070 Würth Elektronik Midcom	CONN RING CIRC 00AWG M10 CRIMP	12

Terminals - Ring Connectors

1. Overview

Ring connectors are cylindrical metallic terminals with a closed loop at one end, designed to establish secure electrical connections between wires and screw-type terminals. They prevent wire fraying and ensure stable contact in high-vibration environments. Critical for power transmission and signal integrity in industrial and automotive systems.

2. Main Types & Functional Classification

Type	Functional Features	Application Examples
Open Barrel Ring	Split design for easy wire insertion	Battery terminals, control panels
Closed Barrel Ring	360 compression for maximum conductivity	High-vibration machinery
Insulated Ring	Polymer coating for short-circuit prevention	Automotive electronics

3. Structure & Composition

Typical construction includes:

Copper alloy body (C11000/C14500) with tin/nickel plating
Insulation sleeve (PVC/nylon, 105 C rating)
Barrel section with 2-3 crimping zones for wire retention
Loop diameter tolerance 0.1mm for screw compatibility

4. Key Technical Specifications

Parameter	Typical Range	Importance
Ampacity	10-150A	Current carrying capacity
Contact Resistance	0.5-5m	Power loss prevention
Dielectric Strength	1kV-5kV	Insulation reliability
Vibration Resistance	15G @ 10Hz-2kHz	Automotive compliance

5. Application Fields

Primary industries:

Automotive (battery cables, alternator connections)
Industrial automation (PLC terminals, motor drives)
Renewable energy (solar charge controllers)
Aerospace (avionics grounding systems)

6. Leading Manufacturers & Products

Manufacturer	Product Series	Key Features
TE Connectivity	DT Ring Terminals	Corrosion-resistant alloy, 125A rating
Phoenix Contact	RTME Series	Push-in wire connection, 600V compliance
Sumitomo Electric	HR4H-S-DC5V	Automotive-grade tin-plated copper

7. Selection Guidelines

Key considerations:

Current/voltage requirements
Wire gauge compatibility (AWG 22-4/0)
Environmental factors (temperature, humidity, vibration)
UL/CSA certification for safety compliance
Color-coded insulation for circuit identification

8. Industry Trends

Emerging developments include:

Miniaturization for EV battery management systems
Graphene-enhanced plating for corrosion resistance
Smart connectors with integrated current sensing
Lead-free manufacturing processes (RoHS compliance)