Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
PK18-38R-C Panduit Corporation	CONN RING CIRC 16-22AWG #3/8	0
MU10-14R/SK 3M	CONN RING CIRC 10-12AWG #1/4	923
323059 TE Connectivity AMP Connectors	CONN RING CIRC 10-12AWG #6 CRIMP	0
320567 TE Connectivity AMP Connectors	CONN RING CIRC 10-12AWG #6 CRIMP	0
151730 TE Connectivity AMP Connectors	CONN RING CIRC 16-22AWG M5 CRIMP	4360
9200080000 Weidmuller	CONN RING CIRC M3.5 CRIMP	18
76-IRT22-10L NTE Electronics, Inc.	PVC INS RING TERM 22-18WG 50 BAG	0
0190730032 Woodhead - Molex	CONN RING CIRC 18-22AWG #3/8	122
A2-14R-C Panduit Corporation	BATTERY CABLE LUG, 2 AWG, 1/4" S	6223900
MVU14-8R/SK 3M	CONN RING CIRC 14-16AWG #8 CRIMP	2194
PV6-14RX-X Panduit Corporation	CONN RING FLAT 6AWG #1/4 CRIMP	74
8-36154-1 TE Connectivity AMP Connectors	CONN RING CIRC 16-22AWG #10	0
0191930375 Woodhead - Molex	CONN RING FLAT 4/0AWG #3/8 CRIMP	17
1958413-1 TE Connectivity AMP Connectors	CONN RING ANGLED 4AWG #5/16	0
2-34146-5 TE Connectivity AMP Connectors	CONN RING CIRC 16-22AWG #10	14283
PN18-4R-M Panduit Corporation	CONN RING CIRC 18-22AWG #4 CRIMP	19123000
2-35772-1 TE Connectivity AMP Connectors	CONN RING CIRC 10-12AWG #1/4	12912
A3/0-12R-C Panduit Corporation	BATTERY CABLE LUG, 3/0 AWG, 1/2"	461600
322798 TE Connectivity AMP Connectors	CONN RING CIRC 16-22AWG #8 CRIMP	10078
PV2-14R-XY Panduit Corporation	CONN RING D-SHAPE 2AWG #1/4	157810

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)