FAQs
> FAQsWelcome to AOSI Electronics’ FAQ page! We’ve compiled answers to the most common questions we receive from our clients. We hope this resource provides you with a quick and clear solution. If you can’t find the answer you’re looking for, please feel free to contact us.
1. Basic Product Knowledge：
What is a terminal block and what is its main function?
A terminal block is an electrical connector used to join and manage wires safely and efficiently. Its primary function is to simplify the process of connecting wires, allowing you to create secure, reliable electrical connections without soldering or splicing. They are essential components in power distribution, automation control, telecommunications, and machinery. Using terminal blocks ensures connection stability, enhances safety, and streamlines assembly and maintenance.
Explore our full range of Terminal Blocks here.
What exactly are the "modules" you offer? What types are available?
Our modules, often called interface modules, are advanced components that integrate specific electrical functions into a compact, standardized housing. Built upon terminal block technology, they can be quickly mounted on standard DIN rails. This simplifies circuit design and saves cabinet space. Key types include:
- Relay Modules: For signal amplification, switching, and electrical isolation.
- Interface Modules: To bridge signals between PLC/DCS systems and field devices.
- Power Distribution Modules: To safely and neatly distribute power from a single source to multiple loads.
- Specialty Function Modules: Such as diode modules, fuse modules, and sensor-actuator interface modules.
See all our Interface Modulesto find the perfect fit for your system.
What are the advantages of using terminal blocks/modules over direct soldering?
Using our products offers significant advantages over traditional wiring methods:
- Efficiency: Fast and easy installation and removal, drastically reducing wiring and maintenance time.
- Safety & Reliability: Insulated housing and secure wire-clamping mechanisms prevent short circuits and poor connections.
- Organization: Creates a clean, well-organized control cabinet, making troubleshooting and wire identification simple.
- Standardization: Facilitates standardized designs and assembly, improving the overall quality and consistency of the final product.
- Functional Integration: Modules allow for the easy addition of complex electrical functions, simplifying your overall circuit design.
2. Choosing the Right Product
How do I select the correct terminal block for my application?
To choose the right terminal block, you must consider several key factors:
- Current & Voltage Rating: The terminal block’s rating must be greater than the maximum current and voltage in your circuit.
- Wire Gauge: Ensure the block’s clamping range can accommodate your wire size (AWG or mm²).
- Mounting Type: Choose based on your setup, such as DIN Rail, PCB (Printed Circuit Board), or Panel Mount.
- Connection Technology: We offer screw, spring-cage, and push-in technologies. Your choice may depend on vibration resistance requirements and wiring preferences.
- Operating Environment: For harsh environments with vibration, corrosion, or extreme temperatures, select products with the appropriate specifications.
To get started, you can browse our complete catalog of terminal blocks.
What's the difference between screw, spring-cage, and push-in terminal blocks? Which should I choose?
These are three primary connection technologies, each with unique benefits:
- Screw Terminals: Provide very high clamping force, making the connection extremely secure. They are versatile and support a wide range of wire sizes. Ideal for applications where high reliability is paramount and vibration is minimal.
- Spring-Cage Terminals: Use spring force to clamp the wire, offering excellent vibration and shock resistance. They are faster to wire than screw terminals. A perfect choice for equipment subject to movement, like railways and heavy machinery.
- Push-in Terminals (PIT): The fastest and most efficient wiring technology. Solid wires or stranded wires with ferrules can be inserted directly without any tools. Ideal for high-density wiring applications and automated manufacturing environments.
You can explore our specific categories for Screw Terminal Blocks, Spring-Cage Terminal Blocks, and Push-in Terminal Blocks.
How do I select the right interface module for my PLC/DCS system?
Using our products offers significant advantages over traditional wiring methods:
- Efficiency: Fast and easy installation and removal, drastically reducing wiring and maintenance time.
- Safety & Reliability: Insulated housing and secure wire-clamping mechanisms prevent short circuits and poor connections.
- Organization: Creates a clean, well-organized control cabinet, making troubleshooting and wire identification simple.
- Standardization: Facilitates standardized designs and assembly, improving the overall quality and consistency of the final product.
- Functional Integration: Modules allow for the easy addition of complex electrical functions, simplifying your overall circuit design.
3. Installation and Use
What are some common mistakes to avoid during installation and wiring?
To ensure a flawless connection, please avoid these common errors:
- Improper Torque (Screw Terminals): Overtightening can damage the wire or terminal, while undertightening can cause a loose connection and overheating. Always use the recommended torque value from the datasheet.
- Incorrect Wire Strip Length: Stripping too little insulation results in poor contact. Stripping too much exposes the conductor, creating a shock or short-circuit hazard.
- Using Stranded Wire without a Ferrule: When using stranded wires with screw or push-in terminals, it is highly recommended to use a ferrule to prevent wire fraying and ensure a solid, reliable connection.
- Connecting Multiple Wires in a Single Clamp: Unless the terminal is specifically designed for multiple conductors, each clamping point should only hold one wire.
For detailed instructions, always refer to the product datasheet, which can be found in our product download.
Do your products require periodic maintenance?
When installed correctly, our products are generally maintenance-free. However, we recommend periodic visual inspections of the control cabinet for any signs of loose connections, discoloration from overheating, or physical damage. For applications with heavy vibration, a periodic torque check on screw terminals is good practice.
4. Ordering and Business
How can I get a quote and order products?
You can place an order or request a quote through several easy methods:
- Online Quote Request: Add products to your inquiry list on our website and submit a formal Request for Quote (RFQ).
- Email or Phone: Call our sales department at 86-15813394039 or email your requirements to [email protected].
- Contact Form: Fill out our general Contact Us form and a representative will get back to you shortly.
What is your Minimum Order Quantity (MOQ)? What is the typical lead time?
Most of our standard products do not have an MOQ. However, custom or non-standard products may have minimum requirements. The typical lead time for in-stock items is [e.g., 3-5 business days]. Your sales representative will provide an accurate lead time with your quote.
Do you offer samples for testing?
Using our products offers significant advantages over traditional wiring methods:
- Efficiency: Fast and easy installation and removal, drastically reducing wiring and maintenance time.
- Safety & Reliability: Insulated housing and secure wire-clamping mechanisms prevent short circuits and poor connections.
- Organization: Creates a clean, well-organized control cabinet, making troubleshooting and wire identification simple.
- Standardization: Facilitates standardized designs and assembly, improving the overall quality and consistency of the final product.
- Functional Integration: Modules allow for the easy addition of complex electrical functions, simplifying your overall circuit design.
Can you develop custom products for my specific needs?
Yes, we are happy to provide samples to qualified customers for testing and evaluation. Please fill out our Sample Request Form with the part numbers you need and a brief description of your application.
5. After-Sales Support
What should I do if I receive a damaged or defective product?
A: We adhere to strict quality control standards. In the unlikely event you receive a damaged or defective item, please contact our customer support team within [e.g., 7 days] of receipt. Provide your order number and photos of the issue. We will immediately arrange for a replacement or return.