Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
S8-10R-Q Panduit Corporation	CONN RING FLAT 8AWG #10 CRIMP	1781396
PNF14-4R-M Panduit Corporation	CONN RING CIRC 14-16AWG #4 CRIMP	22543000
P8-14R-Q Panduit Corporation	CONN RING CIRC 8AWG #1/4 CRIMP	56
PK14-4R-X Panduit Corporation	CONN RING CIRC 14-18AWG #4 CRIMP	0
P8-8R-T Panduit Corporation	CONN RING CIRC 8AWG #8 CRIMP	0
A1/0-38R-C Panduit Corporation	BATTERY CABLE LUG, 1/0 AWG, 3/8"	87600
PV18-14R-CY Panduit Corporation	CONN RING CIRC 18-22AWG #1/4	6676400
S2-56R-X Panduit Corporation	CONN RING FLAT 1-2AWG #5/16	141720
PN22-6R-M Panduit Corporation	CONN RING CIRC 22-26AWG #6 CRIMP	1020
PV8-10RX-TY Panduit Corporation	CONN RING FLAT 8AWG #10 CRIMP	246
PK4-14R-T Panduit Corporation	CONN RING CIRC 4AWG #1/4 CRIMP	0
PV14-56RB-2K Panduit Corporation	CONN RING CIRC 14-16AWG #5/16	333222000
PV10-8RX-D Panduit Corporation	CONN RING CIRC 10-12AWG #8 CRIMP	12092500
P12-10HDR-D Panduit Corporation	CONN RING CIRC 12-16AWG #10	89523000
PV10-8R-L Panduit Corporation	CONN RING CIRC 10-12AWG #8 CRIMP	1346
PNF10-14R-D Panduit Corporation	CONN RING CIRC 10-12AWG #1/4	937
PN10-8R-E Panduit Corporation	CONN RING CIRC 10-12AWG #8 CRIMP	0
PV10-56RB-2K Panduit Corporation	CONN RING CIRC 10-12AWG #5/16	0
PK8-14R-T Panduit Corporation	CONN RING CIRC 8AWG #1/4 CRIMP	0
PM6-5R-L Panduit Corporation	CONN RING CIRC 10-12AWG M5 CRIMP	0

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)