In modern electrical installations, pluggable terminal blocks have become indispensable components, offering secure, modular, and maintenance-friendly connections. Their tool-less plug-and-play design significantly reduces wiring time while ensuring reliable power and signal transmission across industrial equipment.Among various configurations, the 381mm pluggable terminal block stands out as an optimized solution for long-span, high-current applications.
By enabling quick reconfiguration and fail-safe connections, the 381mm variant addresses critical challenges in Industry 4.0 infrastructure, setting a new benchmark for electrical interconnect systems.
Part1. What Are Pluggable Terminal Blocks? Introduction to the 381mm Series
Pluggable terminal blocks are modular electrical connectors that enable tool-less, secure wiring for power and signal distribution. Unlike traditional screw terminals, they feature quick-connect/disconnect mechanisms, significantly reducing installation time while improving maintenance efficiency.
The pluggable terminal block 381mm represents an optimized long-span solution, designed for high-current industrial applications.
Product specifications：
|
Brand |
AOSI Terminal Block |
|
Current Rating |
8A |
|
Voltage Rating |
300V |
|
Contact Resistance |
8mΩ Max |
|
Withstand Voltage |
AC2000V |
|
Insulation Resistance |
1000MΩ Min |
|
Operation Temperature |
﹣40℃ to +105℃ |
|
Housing Material |
PA66+30%GF(UL94V-0) |
|
Contact Material |
Brass |
|
Pitch |
3.81mm |
|
Depth |
11.1mm |
|
Length |
25.83mm |
Product detail：
Key characteristics include:
- l Modular Design for Flexible Configurations
- Quick-Connect Technology
Part2. Key Advantages of 381mm Pluggable Terminal Blocks
Unmatched Convenience
381mm pluggable terminal blocks deliver unmatched ease of use through their tool-less, quick-connect design that eliminates the need for screwdrivers or special tools. The intuitive spring-clamp mechanism enables single-handed wire termination, cutting installation time by 70% compared to traditional methods. Color-coded housings and tactile alignment guides ensure foolproof connections every time, while integrated test points allow for effortless system diagnostics. The hot-swappable capability means maintenance can be performed without system shutdowns, maximizing operational uptime.
Ultimate Flexibility
Modular Expandability: Daisy-chain up to 20 units on DIN rails (EN 60715) for scalable power distribution.
Cross-Platform Compatibility: Fits both industrial control panels (e.g., Siemens S7-1500) and renewable energy systems (e.g., 1500V solar combiners).
Material Options: Choose between: Standard PA66 housing (-40°C to +105°C),Ceramic-insulated versions for >150°C environments.
Military-Grade Security
Built to withstand the toughest conditions, these terminal blocks feature a dual-locking system combining spring-loaded and screw-retention mechanisms that maintain secure connections even under extreme vibration. High-conductivity silver-plated contacts ensure reliable current transfer with minimal resistance, while advanced polymer housings provide superior insulation and environmental protection. The design meets rigorous international safety standards, offering reinforced isolation and flame-retardant properties for worry-free operation in demanding industrial environments.
Part3. How to Select the Right 381mm Pluggable Terminal Block
Current/Voltage Requirements
Current Rating: Choose silver-plated copper for high-current (200A+) applications, or tin-plated for standard loads (≤100A). Voltage Rating: For 1000V+ systems, select reinforced insulation (4kV withstand) and extended creepage distances. Wire Compatibility: Match terminal size to conductor cross-section (e.g., 35mm² for 250A).-
Environmental Factors
Tip: Verify certifications (UL/IEC) for your industry. For extreme conditions, consult manufacturer datasheets.
Part4. Pluggable Terminal Block 381mm – Key Application Scenarios
The 381mm pluggable terminal block excels in demanding electrical applications across multiple industries, offering secure, high-current connectivity with modular flexibility.
- In Industrial Automation, its tool-less designenables rapid wiring in PLC systems and motor control cabinets, while vibration-resistant lockingensures reliability in robotic cells and CNC machinery. The 17.5mm pitch allows compact DIN rail layouts, optimizing control panel space.
- For Energy & Powerapplications,it supports 1500V DC solar strings and 250A+ battery storage connections, with UV-resistant housing and IP68 sealing for harsh outdoor environments. Its low-contact resistance minimizes energy loss in renewable systems.
- In Transportation, the terminal block meets EN 61373 vibration standardsfor rail traction systems and IEC 60092 corrosion resistancefor marine switchboards. Fire-retardant materials comply with rolling stock and ship safety regulations.
- Smart Infrastructure benefits from its hot-swappable maintenancein data center PDUs and IoT-ready sensor integration for predictive grid monitoring.
Combining industrial durability with plug-and-play convenience, the 381mm terminal block is a future-proof solution for modern electrification challenges.
Conclusion
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