Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
55148-1 TE Connectivity AMP Connectors	CONN RING CIRC 16-22AWG #10	2321
328965 TE Connectivity AMP Connectors	CONN RING ANGLED 16-22AWG #1/4	905
322340 TE Connectivity AMP Connectors	CONN RING CIRC 14-16AWG #5/16	0
2-328975-2 TE Connectivity AMP Connectors	CONN RING CIRC 20AWG #1/2 CRIMP	0
2-321518-1 TE Connectivity AMP Connectors	CONN RING CIRC 14-16AWG #10	1212
34826 TE Connectivity AMP Connectors	CONN RING CIRC 14-16AWG #3/8	11
34150 TE Connectivity AMP Connectors	CONN RING CIRC 16-22AWG #1/4	19603
640253-2 TE Connectivity AMP Connectors	CONN RING CIRC 12-16AWG CRIMP	15623
41332-1 TE Connectivity AMP Connectors	CONN RING CIRC 14-18AWG #8 CRIMP	12927
33461 TE Connectivity AMP Connectors	CONN RING CIRC 8AWG #1/4 CRIMP	0
2-33461-4 TE Connectivity AMP Connectors	CONN RING CIRC 8AWG #1/4 CRIMP	2838
320564 TE Connectivity AMP Connectors	CONN RING CIRC 14-16AWG #3/8	1256
34835 TE Connectivity AMP Connectors	CONN RING CIRC 10-12AWG #4 CRIMP	2014
171512-1 TE Connectivity AMP Connectors	CONN RING TONG 22-18AWG #4 P-G	18418
8-36149-1 TE Connectivity AMP Connectors	CONN RING CIRC 16-22AWG #6 CRIMP	950
34104-2 TE Connectivity AMP Connectors	CONN RING CIRC 16-22AWG #4 CRIMP	854
165026 TE Connectivity AMP Connectors	CONN RING CIRC 10-12AWG M6	0
322764 TE Connectivity AMP Connectors	CONN RING CIRC 300-350MCM #1/2	129
160101-9 TE Connectivity AMP Connectors	CONN RING CIRC 16-20AWG #8 CRIMP	0
322704 TE Connectivity AMP Connectors	CONN RING CIRC 4AWG #3/8 CRIMP	285

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)