Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
62612-1 TE Connectivity AMP Connectors	CONN RING CIRC 10-12AWG #8 CRIMP	0
BU-L00-375TIN Mueller Electric Co.	LUG 2/0 AWG 3/8" STUD TIN	99245
PN10-14R-D Panduit Corporation	CONN RING CIRC 10-12AWG #1/4	490
PN10-10R-D Panduit Corporation	CONN RING CIRC 10-12AWG #10	1824
76-IRT16-1/4L NTE Electronics, Inc.	PVC INS RING TERM 16-14WG 50 BAG	6
M4-38RX-BOTTLE 3M	CONN RING CIRC 4AWG #3/8 10PC	4
0191930143 Woodhead - Molex	CONN RING CIRC 8AWG #6 CRIMP	699
2-35775-1 TE Connectivity AMP Connectors	CONN RING CIRC 14-16AWG #1/4	7394
34146 TE Connectivity AMP Connectors	CONN RING CIRC 16-22AWG #10	2243
326854 TE Connectivity AMP Connectors	CONN RING CIRC 14-16AWG #2 CRIMP	24696
94731 3M	CONN RING CIR 14-16AWG 1/4 1=1PC	563
PV18-8R-CY Panduit Corporation	CONN RING CIRC 18-22AWG #8 CRIMP	2035
322316 TE Connectivity AMP Connectors	CONN RING CIRC 10-12AWG #14	0
8-31894-5 TE Connectivity AMP Connectors	CONN RING CIRC 16-22AWG #1/4	4402
0191640083 Woodhead - Molex	CONN RING CIRC 8AWG #5/16 CRIMP	226
8-33457-1 TE Connectivity AMP Connectors	CONN RING CIRC 10-12AWG #10	709
PN18-14R-M Panduit Corporation	CONN RING CIRC 18-22AWG #1/4	6615000
324043 TE Connectivity AMP Connectors	CONN RING CIRC 8AWG #10 CRIMP	1202
170011-8 TE Connectivity AMP Connectors	CONN RING CIRC 14-18AWG #10	17270
53405-1 TE Connectivity AMP Connectors	CONN RING CIRC 16-22AWG #4 CRIMP	960

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)