Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
3240094 Phoenix Contact	CONN RING CIRC 6AWG M5 CRIMP	897
3240084 Phoenix Contact	CONN RING CIRC 10-14AWG M5 CRIMP	2584
3240093 Phoenix Contact	CONN RING CIRC 8AWG M12 CRIMP	195
3240112 Phoenix Contact	CONN RING CIRC 1/0AWG M10 CRIMP	0
3240221 Phoenix Contact	CONN RING CIRC 8AWG M8 CRIMP	553
3240097 Phoenix Contact	CONN RING CIRC 6AWG M10 CRIMP	85
3240092 Phoenix Contact	CONN RING CIRC 8AWG M10 CRIMP	1398
3240077 Phoenix Contact	CONN RING CIRC 14-18AWG #3.5	118
3240025 Phoenix Contact	CONN RING CIRC 14-16AWG M6 CRIMP	20528550
3240027 Phoenix Contact	CONN RING CIRC 10-12AWG M4 CRIMP	1987
3240087 Phoenix Contact	CONN RING CIRC 10-14AWG M10	15
3240023 Phoenix Contact	CONN RING CIRC 14-16AWG #4 CRIMP	261
3240031 Phoenix Contact	CONN RING CIRC 10-12AWG M10	65
3240088 Phoenix Contact	CONN RING CIRC 10-14AWG M12	136
3240021 Phoenix Contact	CONN RING CIRC 14-16AWG M3 CRIMP	1745
3240022 Phoenix Contact	CONN RING CIRC 14-16AWG M3.5	2496
3240086 Phoenix Contact	CONN RING CIRC 10-14AWG M8 CRIMP	1757
3240091 Phoenix Contact	CONN RING CIRC 8AWG M8 CRIMP	0
3240105 Phoenix Contact	CONN RING CIRC 2AWG M6 CRIMP	238
3240101 Phoenix Contact	CONN RING CIRC 4AWG M8 CRIMP	231

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)