Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
43-8-NB 3M	CONN RING HOOK 10-12AWG #8 CRIMP	676
MU18-14R/SK 3M	CONN RING CIRC 18-22AWG #1/4	4539
MVU10-8RK 3M	CONN RING CIRC 10-12AWG #8 CRIMP	1038
MVU18-10RX-BOTTLE 3M	CONN RING CIRC 18-22AWG 10 100PC	0
MVU18-516R/SK 3M	CONN RING CIRC 18-22AWG #5/16	308
13-56S-W 3M	CONN RING CIRC 10-12AWG #5/16	0
12-6S-P 3M	CONN RNG CIR 14-16AWG #6 1=1000	2
M18-6R/SX-BOTTLE 3M	CONN RING CIRC 18-22AWG #6 100PC	1
MV18-6R/SX-BOTTLE 3M	CONN RING CIRC 18-22AWG #6 100PC	3
94761 3M	CONN RING CIR 6AWG #5/16 1=1PC	125
MV10-10RX-BOTTLE 3M	CONN RING CIRC 10-12AWG #10 50PC	18
MVU18-10R/LK 3M	CONN RING CIRC 18-22AWG #10	3036
MV10-14R/SX-BOTTLE 3M	CONN RING CIRC 10-12AWG 1/4 50PC	5
12-4S-NB 3M	CONN RING CIRC 14-16AWG #4 CRIMP	0
10-6-WN 3M	CONN RING CIRC 24-26AWG #6 CRIMP	435
94856 3M	CONN RING CIR 14-16AWG #8 1=1PC	476
MN8-38RX-BOTTLE 3M	CONNRINGCIRC8AWG#3/8 10PC/BOTTLE	11
94753 3M	CONN RING CIR 10-12AWG #8 1=1PC	1302
13-56 3M	CONN RING CIRC 10-12AWG #5/16	703
MVU14-10RX 3M	CONN RING CIRC 14-16AWG #10	860

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)