3.81mm Pluggable Terminal Block Overview
The 3.81mm Pluggable Terminal Block is a high-performance, industrial-grade 3.81mm pluggable terminal block connector system engineered for reliable wire-to-board connections. Comprising a secure screw-clamp plug and versatile PCB headers, this system simplifies field wiring, maintenance, and system upgrades. It is widely adopted in industrial automation, power supplies, data acquisition modules, and HVAC control systems.
3.81mm Pluggable Terminal Block Technical Specifications
| Category | Parameters | Specifications |
|---|---|---|
| Electrical | Rated Voltage | 300V |
| Rated Current | 8A | |
| Withstand Voltage | 2500V AC | |
| Dielectric Strength | 2500 V/min | |
| Contact Resistance | ≤ 20 mΩ | |
| Insulation Resistance | ≥ 1000 MΩ | |
| Mechanical | Pitch | 3.81 mm |
| Pole Range | 2P – 24P | |
| Wire Range | 28-16 AWG (0.14-1.5 mm²) | |
| Stripping Length | 7-8 mm | |
| Screw Thread | M2 | |
| Torque | 0.2 N·m | |
| Pin Dimensions | 3.7 mm | |
| PCB Hole Diameter | 1.4 mm | |
| Operating Temp. | -40°C ~ +105°C | |
| Materials | Insulator Material | PA66 (Polyamide 66), UL94V-0 |
| Terminal Material | Copper Alloy | |
| Terminal Plating | 3.0-5.0 um Nickel Plated | |
| Contact Plating | Tin Plated over Nickel | |
| Screw Material | Steel, Zinc Plated | |
| Environmental | RoHS Compliant |
Key Advantages & Application Benefits
Flexible Board Design: Available in both Right-Angle (Horizontal) and Vertical PCB configurations, giving hardware engineers the flexibility to optimize space in tight enclosures.
Secure Screw Clamp Mechanism: The M2 steel clamping screw ensures high gas-tight retention force, preventing accidental wire pull-outs under heavy vibration.
Efficient Field Maintenance: The two-piece pluggable design allows for rapid troubleshooting and modular swaps without desoldering wires, significantly reducing machine downtime.
3.81mm Pluggable Terminal Block FAQ
Q1: What is the pitch and current rating of this terminal block system?
A: This pluggable terminal block connector system features a standard 3.81mm pitch. It is rated for a maximum voltage of 300V and a rated current of 8A, making it ideal for industrial control boards and signal routing.
Q2: What wire sizes are compatible with the 15EDGK-3.81 screw clamp plug?
A: The screw clamp plug accepts a wide wire range from 28 AWG to 16 AWG (equivalent to cross-sectional areas of $0.14\text{ mm}^2$ to $1.5\text{ mm}^2$). The recommended wire stripping length is 7-8 mm.
Q3: What PCB mounting options are available for the mating headers?
A: We offer two types of PCB headers to suit different spatial layouts: Right-Angle (Horizontal) for parallel board mounting and Vertical for upright mounting. Both variations require a recommended PCB hole diameter of 1.4 mm.
Q4: What are the material properties and flammability ratings?
- A: The insulator housing is made of high-quality PA66 (Polyamide 66) with a UL94V-0 flame-retardant rating. The contacts are constructed from a robust Copper Alloy, finished with Tin Plating over a Nickel base, ensuring excellent conductivity and corrosion resistance.
Q5: Can this connector withstand harsh industrial environments?
A: Yes, the connector is designed for rugged applications, featuring a wide operating temperature range from $-40^\circ\text{C}$ to $+105^\circ\text{C}$. Additionally, the entire series is fully RoHS Compliant, fulfilling environmental regulatory requirements for export to European and American markets.
Q6: What is the correct screw torque for the plug wiring?
A: The plug uses M2 steel, zinc-plated screws. The recommended tightening torque is 0.2 N·m. Applying the correct torque ensures a secure connection without damaging the wire or the internal terminal clamping cage.
Customization Available:
For custom lengths or bulk pricing, please email us:
nick.xu@lyd123.com
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