Introduction
This manual provides instructions for the OONO Screw Mount 30A/300V 2x12 Position Terminal Block Distribution Module, model MD-D1339P-1. This module is designed for distributing electrical connections, supporting multiple module extension connections.
The module features two main terminal blocks (A and B) and two sets of 12 position terminal blocks (A1-A12 and B1-B12). It is constructed with a fireproof nylon mount carrier and includes M3 x 10mm wood screws for easy mounting on a wooden board.
Specifications
| Model Number | MD-D1339P-1 |
| Maximum Voltage | 300V |
| A / B Position Maximum Current | 30 Amp (each position) |
| A1~A12 / B1~B12 Position Maximum Current | 20 Amp (each position) |
| A / B Terminal Block Pitch | 7.62mm / 0.3" |
| A / B Terminal Block Wire Range | 26AWG ~ 10AWG / 4.0mm² |
| A / B Terminal Block Strip Length | 8mm |
| A1~A12 / B1~B12 Terminal Block Pitch | 5.0mm / 0.197" |
| A1~A12 / B1~B12 Terminal Block Wire Range | 26AWG ~ 12AWG / 2.5mm² |
| A1~A12 / B1~B12 Terminal Block Strip Length | 7mm |
| Screws | M3, steel, Cr3+ Zn plated |
| Pin Header and Cage Material | Brass |
| Mounting Type | Screw Mount |
| Dimensions | 5.24 x 3.9 x 2.09 inches (133.1 x 99.1 x 53.1 mm) |
| Weight | 3.84 ounces (108.86 grams) |
Refer to the dimension diagram for detailed measurements.
Image: Top and side view diagrams illustrating the dimensions of the OONO terminal block, including length (82mm), width (48mm), and height (37.1mm).
Setup
The OONO terminal block is designed for screw mounting. Follow these steps for installation:
- Select Mounting Location: Choose a stable surface, such as a wooden board, for mounting the terminal block.
- Position the Module: Place the terminal block in the desired location and mark the positions for the mounting screws.
- Secure the Module: Use the two included M3 x 10mm wood screws to securely fasten the terminal block to the mounting surface. Ensure the module is stable and does not wobble.
Image: The OONO terminal block shown alongside two M3 x 10mm wood screws, indicating the included hardware for mounting.
Image: An OONO terminal block securely mounted to a surface, demonstrating a typical installation.
Operating Instructions
This terminal block facilitates organized electrical distribution. Understand the connection points and their specifications before wiring.
Terminal Layout and Capacity:
- A / B Terminal Blocks: These are the main input/output terminals. Each A or B position can handle a maximum current of 30 Amp. The wire range for these terminals is 26AWG to 10AWG (4.0mm²), with a strip length of 8mm.
- A1~A12 / B1~B12 Terminal Blocks: These are the distribution terminals. Each individual A1-A12 or B1-B12 position can handle a maximum current of 20 Amp. The total maximum current for all A1-A12 positions combined is 30 Amp, and similarly for B1-B12 positions. The maximum voltage for all terminals is 300V. The wire range for these terminals is 26AWG to 12AWG (2.5mm²), with a strip length of 7mm.
Wiring Procedure:
- Prepare Wires: Strip the insulation from the ends of your wires according to the specified strip lengths (8mm for A/B terminals, 7mm for A1-A12/B1-B12 terminals). Ensure the wire gauge is within the specified range.
- Loosen Screws: Use a suitable screwdriver to loosen the M3 screws on the desired terminal points.
- Insert Wires: Insert the stripped wire end fully into the terminal opening. Ensure no stray strands are exposed.
- Tighten Screws: Tighten the screw firmly to secure the wire. Perform a gentle pull test on each wire to confirm a secure connection.
- Verify Connections: Double-check all connections for correct polarity and secure fastening before applying power.
Image: A front view of the OONO terminal block, showing the main A and B terminals and the 12-position distribution terminals (A1-A12, B1-B12) clearly labeled.
Image: An angled view of the OONO terminal block, highlighting the screw terminals and the overall robust construction.
Image: A schematic diagram illustrating the internal wiring of the OONO terminal block, showing how the main A and B lines connect to the A1-A12 and B1-B12 distribution points respectively.
Image: A visual representation of a typical connection method, demonstrating how multiple OONO terminal blocks can be interconnected for extended distribution, with input and output wiring indicated by arrows.
Maintenance
Regular maintenance helps ensure the longevity and safe operation of your terminal block.
- Periodic Inspection: Periodically inspect all wire connections to ensure they remain tight. Vibrations or temperature changes can sometimes loosen screw terminals over time.
- Cleanliness: Keep the terminal block free from dust, dirt, and moisture. Use a dry, soft cloth for cleaning. Do not use liquid cleaners.
- Environmental Conditions: Ensure the operating environment remains within suitable temperature and humidity ranges to prevent material degradation.
Troubleshooting
If you encounter issues with your OONO terminal block, consider the following common troubleshooting steps:
- No Power/Intermittent Connection:
- Check all screw terminals to ensure wires are securely fastened. Loose connections are a common cause of power loss or intermittent operation.
- Verify that the wire insulation is stripped to the correct length and that the bare wire is fully inserted into the terminal.
- Confirm that the wire gauge is appropriate for the terminal and that it is not too thin or too thick.
- Overheating:
- Ensure that the current flowing through any individual terminal or group of terminals does not exceed the specified maximum ratings (30A for A/B, 20A for A1-A12/B1-B12 individual, 30A total for A1-A12 or B1-B12).
- Check for short circuits in the connected wiring.
- Difficulty Inserting Wires:
- Ensure the screw is sufficiently loosened.
- Verify the wire gauge is within the acceptable range for the specific terminal.
If problems persist after performing these checks, consult a qualified electrician or contact OONO customer support.
Warranty and Support
For information regarding warranty coverage or technical support, please refer to the product packaging or contact your retailer. You may also visit the official OONO brand store for additional resources and contact information:
