Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
94726 3M	CONN RING CIR 18-22AWG #8 1=1PC	4736
12-4S 3M	CONN RING CIRC 14-16AWG #4 CRIMP	9736
HT-12-6S 3M	CONN RING CIRC 14-16AWG #6 CRIMP	1489
11-4S-P 3M	CONN RING CIRC 18-22AWG #4 CRIMP	999
MN8-14R/SX-BOTTLE 3M	CONN RING CIRC 8AWG #1/4 10PC	6
94718 3M	CONN RING CIR 18-22AWG 1/4 1=1PC	714
13-10 3M	CONN RING CIRC 10-12AWG #10	3584
MU18-6R/SK 3M	CONN RING CIRC 18-22AWG #6 CRIMP	40407
MV14-14R/SX-BOTTLE 3M	CONN RING CIRC 14-16AWG 100PC	3
MNG10-14R/SK 3M	CONN RING CIRC 10-12AWG #1/4	126
MNG10-10RX-BOTTLE 3M	CONN RING CIRC 10-12AWG #10 50PC	1
11-4S-W 3M	CONN RING CIRC 18-22AWG #4 CRIMP	0
M8-14R/SX 3M	CONN RING CIRC 8AWG #1/4 CRIMP	0
MH14-10R/LX-BOTTLE 3M	CONN RING CIRC 14-16AWG #10 25PC	3
MN6-38RX-BOTTLE 3M	CONN RING CIRC 6AWG #3/8 10PC	10
MNG10-14R/SX-BOTTLE 3M	CONN RING CIRC 10-12AWG 1/4 50PC	1
94755 3M	CONN RING CIR 8AWG #3/8 1=1PC	228
11-10 3M	CONN RING CIRC 18-22AWG #10	21163
MU10-10RK 3M	CONN RING CIRC 10-12AWG #10	324
94855 3M	CONN RING CIR 14-16AWG #6 1=1PC	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)