Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
S2-12R-X Panduit Corporation	CONN RING FLAT 1-2AWG #1/2 CRIMP	112
PN18-10R-E Panduit Corporation	CONN RING CIRC 18-22AWG #10	100
PV18-56R-MY Panduit Corporation	CONN RING CIRC 18-22AWG #5/16	86715000
PNF14-10R-E Panduit Corporation	CONN RING CIRC 14-16AWG #10	0
P14-4R-M Panduit Corporation	CONN RING CIRC 14-18AWG #4 CRIMP	1611
PN14-6RN-3K Panduit Corporation	CONN RING CIRC 14-16AWG #6 CRIMP	28269000
PH18-10R-Q Panduit Corporation	CONN RING CIRC 18-22AWG #10	6141175
PMV2-5RB-C Panduit Corporation	CONN RING CIRC 14-16AWG M5 CRIMP	10118400
S2/0-14R-X Panduit Corporation	CONN RING FLAT 2/0AWG #1/4 CRIMP	2110
P6-14R-T Panduit Corporation	CONN RING CIRC 6AWG #1/4 CRIMP	155
S1/0-14R-C Panduit Corporation	CONN RING FLAT 1/0AWG #1/4 CRIMP	93200
PK14-14R-X Panduit Corporation	CONN RING CIRC 14-18AWG #1/4	0
P10-10R-D Panduit Corporation	CONN RING CIRC 10-14AWG #10	1710
E18-6RB-Q Panduit Corporation	STRONGHOLD RING TERMINAL, NON-IN	3435
S2/0-56R-X Panduit Corporation	CONN RING FLAT 2/0AWG #5/16	8010
A2/0-56RC-C Panduit Corporation	BATTERY CABLE LUG, 2/0 AWG, 5/16	1878600
EV18-14RB-L Panduit Corporation	STRONGHOLD RING TERMINAL, VINYL	4315
PV8-10RX-QY Panduit Corporation	CONN RING FLAT 8AWG #10 CRIMP	3771725
P18-10R-C Panduit Corporation	CONN RING CIRC 18-22AWG #10	132212700
PN18-38R-C Panduit Corporation	CONN RING CIRC 18-22AWG #3/8	925

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)