Phoenix Contact UKK 5-HESI Fuse Terminal Block - 4mm² - Black
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Product Information
Full details
The Phoenix Contact UKK 5-HESI (5X20) is a dual-level fuse terminal block designed for electrical control panels and systems requiring reliable circuit protection for 5x20mm fuses. It offers a key benefit of simplifying wiring by integrating fuse holding and termination in a single unit, though its specific voltage and current ratings necessitate careful application consideration. This block features screw connections for secure wiring, compatibility with common mounting rails, and a durable thermoplastic construction.
All features
| Model Part Number | 3007204 |
|---|---|
| Brand | Phoenix Contact |
Extended Product Information
FAQs
What type and size of fuse does the UKK 5-HESI (5X20) use?
This terminal block is designed specifically for 5x20mm glass or ceramic fuses.
What is the maximum wire size this terminal block can accommodate?
It can accommodate conductor cross-sections from 0.2mm² up to 4mm² (equivalent to AWG 24 to 12).
Can this terminal block be mounted on any type of DIN rail?
No, it is specifically compatible with NS 35/7.5, NS 35/15, and NS 32 mounting rails due to its universal mounting base.
What is the maximum voltage and current rating?
The rated voltage is 400V, and the current rating is 32A.
Is this terminal block suitable for both solid and stranded wire?
Yes, it is suitable for solid-core, multi-wired, and fine-strand conductors, with or without cable end sleeves.
What is the flammability class of the insulation material?
The insulation material has a UL94 V0 flammability class, indicating a high standard of fire resistance.
How do I connect wires to the terminal block?
Wires are connected using screw terminals. Strip the conductor to the appropriate length, insert it into the terminal opening, and tighten the screw firmly with a screwdriver.
Troubleshooting
No power through the terminal block
Check that the fuse is correctly inserted and has not blown. Verify that the conductor connections are securely tightened in both terminal levels.
Loose conductor connection
Ensure the correct conductor size is used (0.2-4mm²). Loosen the screw terminal, re-insert the conductor firmly, and retighten the screw securely.
Overheating at connection point
Verify that the conductor is fully inserted and the screw is tightened appropriately. Ensure the conductor's cross-section is within the specified range and that the fuse rating matches the circuit's requirements.
Terminal block does not snap onto DIN rail
Confirm you are using a compatible DIN rail type (NS 35/7.5, NS 35/15, or NS 32). Ensure the mounting rail is correctly positioned and the terminal block's mounting base is properly aligned.
Pros and Cons
Pros
- Integrates fuse holding and terminal connection, saving space and simplifying installation.
- Accommodates a broad spectrum of wire types and sizes.
- Secure screw connections ensure reliable electrical contact.
- Compatible with industry-standard mounting rails for easy integration.
- Durable construction with a UL94 V0 flammability rating for safety.
Cons
- Limited to 5x20mm fuse size.
- 400V nominal voltage rating may not be sufficient for high-voltage applications.
- Requires specific fuse types (glass/ceramic), limiting selection.
- Screw connections may require periodic checking for tightness in high-vibration environments.
Setup, Compatibility & Care
Setup:
- Mounting: Snap the terminal block onto the desired mounting rail (NS 35/7.5, NS 35/15, or NS 32). The universal mounting base allows for secure attachment to both symmetric and asymmetric rails.
- Wiring: Insert conductors into the screw terminals. Strip the wire to the appropriate length and insert it into the terminal. Tighten the screw firmly using a suitable screwdriver to secure the connection. Ensure correct conductor cross-section (0.2-4mm²) is used.
- Fuse Insertion: Insert a 5x20mm glass or ceramic fuse into the designated fuse holder slot. Ensure the fuse rating is appropriate for the circuit being protected.
Compatibility:
- Mounting Rails: Compatible with NS 35/7.5, NS 35/15, and NS 32 DIN mounting rails.
- Fuses: Designed for 5x20mm glass or ceramic fuses.
- Conductors: Suitable for solid, multi-wired, and fine-strand conductors (with or without ferrules) within the 0.2-4mm² (24-12 AWG) range.
Care:
- Keep the terminal block clean and free from dust and debris. Use a dry or slightly damp cloth for cleaning.
- Periodically check screw connections for tightness, especially in environments with significant vibration, to maintain optimal electrical contact.
- Ensure fuses are correctly rated for the application to prevent damage to the terminal block or connected equipment.