Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
MU14-10RK 3M	CONN RING CIRC 14-16AWG #10	523
1577633-1 TE Connectivity AMP Connectors	CONN RING CIRC 16-18AWG #10	106
321275 TE Connectivity AMP Connectors	CONN RING CIRC 4AWG #1/4 CRIMP	5
PV14-8RB-3K Panduit Corporation	CONN RING CIRC 14-16AWG #8 CRIMP	7838
PV6-14R-X Panduit Corporation	CONN RING FLAT 6AWG #1/4 CRIMP	130
2-34141-1 TE Connectivity AMP Connectors	CONN RING CIRC 16-22AWG #4 CRIMP	1635
2178506-3 TE Connectivity AMP Connectors	CONN RING CIRC 14-18AWG M3.5	0
PV14-4R-C Panduit Corporation	CONN RING CIRC 14-16AWG #4 CRIMP	3959600
31812 TE Connectivity AMP Connectors	CONN RING CIRC 4AWG #3/8 CRIMP	802
3240078 Phoenix Contact	CONN RING CIRC 14-18AWG M4 CRIMP	124
MVU14-6R/SK 3M	CONN RING CIRC 14-16AWG #6 CRIMP	3870
PN12-10HDR-L Panduit Corporation	CONN RING CIRC 12-16AWG #10	16400
0190730236 Woodhead - Molex	CONN RING CIRC 10-12AWG #3/8	1569
13-56S 3M	CONN RING CIRC 10-12AWG #5/16	0
2-31811-3 TE Connectivity AMP Connectors	CONN RING CIRC 4AWG #1/4 CRIMP	994
0190540033 Woodhead - Molex	CONN RING CIRC 18-22AWG #6 CRIMP	0
3240017 Phoenix Contact	CONN RING CIRC 16-20AWG M3.5	4195
52043-3 TE Connectivity AMP Connectors	CONN RING CIRC 4AWG #1/4 CRIMP	764
140635 TE Connectivity AMP Connectors	CONN RING CIRC 15.5-20AWG CRIMP	27450
8-34151-1 TE Connectivity AMP Connectors	CONN RING CIRC 16-22AWG #5/16	915

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)