Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
P6-56R-T Panduit Corporation	CONN RING CIRC 6AWG #5/16 CRIMP	273
P4-10R-E Panduit Corporation	CONN RING CIRC 4AWG #10 CRIMP	40
2-33467-3 TE Connectivity AMP Connectors	CONN RING CIRC 6AWG #3/8 CRIMP	745
PN18-4R-C Panduit Corporation	CONN RING CIRC 18-22AWG #4 CRIMP	4071600
3240083 Phoenix Contact	CONN RING CIRC 10-14AWG M4 CRIMP	0
0190710250 Woodhead - Molex	CONN RING CIRC 4AWG #10 CRIMP	68
13-56-NB 3M	CONN RING CIRC 10-12AWG #5/16	747
PNF10-14R-2K Panduit Corporation	CONN RING CIRC 10-12AWG #1/4	1356
0192030005 Woodhead - Molex	CONN RING CIRC 18-22AWG #1/4	0
2-321895-2 TE Connectivity AMP Connectors	CONN RING CIRC 16-22AWG #8 CRIMP	929
MVU10-10RX 3M	CONN RING CIRC10-12AWG 1=1BOTTLE	3
50881 TE Connectivity AMP Connectors	CONN RING CIRC 14-16AWG #6 CRIMP	6269
P2-56RHT6-X Panduit Corporation	CONN RING D-SHAPE 2AWG #5/16	61450
0192030388 Woodhead - Molex	CONN RING CIRC 14-16AWG #10	2147483647
34105-3 TE Connectivity AMP Connectors	CONN RING CIRC 16-22AWG #6 CRIMP	358
S1/0-12R-X Panduit Corporation	CONN RING FLAT 1/0AWG #1/2 CRIMP	59180
53403-1 TE Connectivity AMP Connectors	CONN RING CIRC 24-26AWG #8 CRIMP	5208
8-36152-1 TE Connectivity AMP Connectors	CONN RING CIRC 16-22AWG #6 CRIMP	2895
PMNF6-3R-L Panduit Corporation	CONN RING CIRC 10-12AWG M3 CRIMP	68410550
40594 TE Connectivity AMP Connectors	CONN RING CIRC 14-18AWG #8 CRIMP	23264

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)