Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
S3/0-12R-5 Panduit Corporation	CONN RING FLAT 3/0AWG #1/2 CRIMP	61290
PH14-14R-Q Panduit Corporation	CONN RING CIRC 14-16AWG #1/4	1406075
P18-56R-M Panduit Corporation	CONN RING CIRC 18-22AWG #5/16	1880
E14-4RB-Q Panduit Corporation	STRONGHOLD RING TERMINAL, NON-IN	4886
P2-56R-T Panduit Corporation	CONN RING CIRC 2AWG #5/16 CRIMP	832400
EV8-12R-Q Panduit Corporation	STRONGHOLD RING TERMINAL, VINYL	37537125
P6-8R-T Panduit Corporation	CONN RING CIRC 6AWG #8 CRIMP	78
PNF14-4R-3K Panduit Corporation	CONN RING CIRC 14-16AWG #4 CRIMP	6000
A4/0-56R-C Panduit Corporation	BATTERY CABLE LUG, 4/0 AWG, 5/16	68
S6-10R-E Panduit Corporation	CONN RING FLAT 6AWG #10 CRIMP	514
PV14-6R-C Panduit Corporation	CONN RING CIRC 14-16AWG #6 CRIMP	5421700
EV14-56RB-L Panduit Corporation	STRONGHOLD RING TERMINAL, VINYL	3811
PNF18-6RN-C Panduit Corporation	CONN RING CIRC 18-22AWG #6 CRIMP	110
P8-8RNHT6-Q Panduit Corporation	CONN RING D-SHAPE 8AWG #8 CRIMP	581925
EV14-56RB-Q Panduit Corporation	STRONGHOLD RING TERMINAL, VINYL	3965150
PV10-14R-E Panduit Corporation	CONN RING CIRC 10-12AWG #1/4	7403360
PNF14-6R-M Panduit Corporation	CONN RING CIRC 14-16AWG #6 CRIMP	2331
P8-56R-Q Panduit Corporation	CONN RING CIRC 8AWG #5/16 CRIMP	2206150
PK18-6R-E Panduit Corporation	CONN RING CIRC 16-22AWG #6 CRIMP	0
PV18-10R-MY Panduit Corporation	CONN RING CIRC 18-22AWG #10	2190

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)