Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
3240098 Phoenix Contact	CONN RING CIRC 6AWG M12 CRIMP	77
3240220 Phoenix Contact	CONN RING CIRC 8AWG M6 CRIMP	365
3240099 Phoenix Contact	CONN RING CIRC 4AWG M5 CRIMP	1980
3240024 Phoenix Contact	CONN RING CIRC 14-16AWG M5 CRIMP	423610500
3240095 Phoenix Contact	CONN RING CIRC 6AWG M6 CRIMP	2500
3240102 Phoenix Contact	CONN RING CIRC 4AWG M10 CRIMP	180
3240080 Phoenix Contact	CONN RING CIRC 14-18AWG M6 CRIMP	1962
3240089 Phoenix Contact	CONN RING CIRC 8AWG M5 CRIMP	0
3240096 Phoenix Contact	CONN RING CIRC 6AWG M8 CRIMP	752
3240071 Phoenix Contact	CONN RING CIRC 18-20AWG M3.5	581
3240219 Phoenix Contact	CONN RING CIRC 8AWG M5 CRIMP	1755
3240030 Phoenix Contact	CONN RING CIRC 10-12AWG M8 CRIMP	2830
3240020 Phoenix Contact	CONN RING CIRC 16-20AWG M6 CRIMP	1758
3240082 Phoenix Contact	CONN RING CIRC 14-18AWG M10	489
3240019 Phoenix Contact	CONN RING CIRC 16-20AWG M5 CRIMP	704
3240124 Phoenix Contact	CONN RING CIRC 250MCM M8 CRIMP	0
3240119 Phoenix Contact	CONN RING CIRC 2/0AWG M16 CRIMP	100
3240135 Phoenix Contact	CONN RING CIRC 500MCM M12 CRIMP	0
3241211 Phoenix Contact	CONN RING CIRC 10-12AWG M5 CRIMP	6800
3240120 Phoenix Contact	CONN RING CIRC 3/0AWG M8 CRIMP	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)