Phoenix Contact PT Fuse Clamp - PT4-HESILED 24(5x20) - 6.3A - 24V
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Product Information
Full details
The Phoenix Contact PT4-HESILED 24(5x20) fuse row clamp is designed for electrical engineers and technicians requiring safe and efficient fuse management in control cabinets. Its key benefit is tool-free wiring with integrated LED defect indication for 24V systems, simplifying installation and diagnostics. A potential caveat is the specific requirement for 5x20 mm G-fuse inserts. This terminal block offers secure connections for various conductor types, a compact design, and dual function shafts for versatile distribution tasks, all while ensuring safety through its integrated control knob and tool-less connection system.
All features
| Model Part Number | 3211903 |
|---|---|
| Brand | Phoenix Contact |
Extended Product Information
FAQs
What size and type of fuses can be used with this terminal block?
This terminal block is designed specifically for 5x20 mm G-type fuse inserts.
What is the purpose of the integrated LED?
The LED provides a visual indication when a fuse has blown, helping to quickly identify circuit faults. It operates on a supply voltage of 12-30V DC.
Can I use this terminal block for circuits other than 24V?
The terminal block itself has a rated voltage of 24V. The LED defect indication feature is specifically designed for 24V AC/DC systems. It can be used in circuits with different voltages as a fuse holder, but the LED will not function correctly outside its specified range.
What types of conductors can be wired using the push-in connection?
It supports fine-strand conductors (0.2-4mm² with or without cable end sleeve), solid-core conductors (0.2-6mm²), and multi-wired conductors (0.2-4mm²).
Is a closing plate always required?
A closing plate is required when using multiple terminal blocks in a row to ensure proper electrical isolation between adjacent blocks. It is also recommended for the end of a terminal block assembly.
What are the dimensions of this terminal block?
The terminal block has a width of 6.2mm, a height of 62.5mm, and a length of 56mm.
Does this product require any special tools for installation?
No, the primary connection method is tool-free push-in technology for conductors. A closing plate might be needed, which typically snaps into place without tools. Fuse insertion and replacement are also tool-free.
Troubleshooting
LED indicator does not light up when a fuse is blown.
Verify that the supply voltage to the LED (12-30V DC) is correctly connected and within the operating range. Ensure the fuse is properly seated and the correct type of fuse is installed.
Conductor connection is loose or unreliable.
Ensure the conductor is inserted fully into the terminal. Check if the conductor size and type are within the specified range (0.2-6mm²). If using a ferrule, ensure it is properly crimped and sized for the conductor.
Terminal block does not snap securely onto the DIN rail.
Confirm that you are using a standard 35 mm top hat DIN rail. Check the mounting foot of the terminal block for any damage or obstructions. Ensure the rail is properly installed and secured.
Difficulty inserting conductors.
For solid conductors or those with ferrules, ensure they are straight and inserted directly. For fine-strand conductors, use appropriate ferrules or ensure they are correctly prepared. Do not force conductors; ensure they are aligned correctly with the push-in opening.
Pros and Cons
Pros
- Significantly reduced insertion forces for easier and faster wiring.
- Integrated LED provides clear visual indication of fuse status.
- Compact 6.2mm width saves significant space in enclosures.
- Tool-free connection technology streamlines installation.
- Safe conductor handling with integrated control knob.
- Tested for demanding applications like railway systems.
Cons
- Requires specific 5x20 mm G-fuse inserts.
- LED indicator is limited to 24V AC/DC systems.
- Requires a separate closing plate for complete assembly.
- Maximum rated current is 6.3A, limiting its use in high-power circuits.
- Primarily designed for DIN rail mounting; other mounting options are not standard.
Setup, Compatibility & Care
Setup:
- Mount the terminal block onto a 35 mm DIN rail (top hat type).
- Connect conductors using the push-in connection system. Insert solid or ferruled conductors directly into the terminal. For fine-strand conductors without a ferrule, ensure proper preparation.
- Insert the appropriate 5x20 mm G-fuse into the swiveling fuse holder.
- If multiple blocks are used in series, a closing plate is required to complete the assembly and ensure electrical isolation between blocks.
Compatibility:
- Conductors: Fine-strand (0.2-4mm² with/without sleeve), Solid (0.2-6mm²), Multi-wired (0.2-4mm²).
- Fuse Type: Exclusively compatible with 5x20 mm G-type fuse inserts.
- Voltage: LED indicator operates on 12-30V DC supply voltage. Rated voltage for the terminal block itself is 24V.
- Mounting: Standard 35 mm DIN rail (IEC 60715).
Care:
- Keep terminals clean and free from dust and debris. Use a dry cloth for cleaning.
- Periodically check conductor connections to ensure they remain secure.
- Inspect fuses for signs of damage or overheating. Replace blown fuses promptly with the correct type and rating.