Phoenix Contact UTTB 4-TG Disconnect Terminal Block - 4mm² - 3044720
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Product Information
Full details
This Phoenix Contact UTTB 4-TG Disconnect Terminal Block is designed for electrical engineers and technicians needing reliable circuit isolation and testing capabilities. Its key benefit is offering a safe, integrated disconnect point within a compact, double-level terminal block. A potential consideration is its specific voltage and current rating, requiring users to verify suitability for their application.
All features
| Model Part Number | 3044720 |
|---|---|
| Brand | Phoenix Contact |
Extended Product Information
FAQs
What is the maximum voltage and current rating for the UTTB 4-TG?
The UTTB 4-TG is rated for a maximum of 500V and 20A.
What types of DIN rails is this terminal block compatible with?
It is compatible with standard NS 35/7.5 and NS 35/15 DIN rails.
What is the purpose of the disconnect zone?
The disconnect zone allows for safe isolation of the circuit for testing, measurement, or maintenance purposes without needing to disconnect the entire system.
What is the wire connection method?
It uses a screw connection method for secure wire termination.
What wire sizes can be connected?
The terminal block can accommodate wire cross-sections from 0.14mm² to 6mm² (AWG 26 to 10).
What material is the housing made of and what is its flammability rating?
The housing is made of thermoplastic and has an inflammability class of V0 according to UL94.
Can this terminal block be used for high-frequency signals?
While designed for general power and control circuits, its suitability for high-frequency signals depends on the specific application's requirements for signal integrity and impedance matching. It is primarily intended for power and basic control applications.
Troubleshooting
Terminal connection is loose
Ensure the wire is stripped to the correct length and fully inserted into the terminal. Retighten the screw firmly with an appropriate screwdriver.
Disconnect lever is stiff or won't operate
Check for any obstructions or debris in the disconnect mechanism. Gently try to free the mechanism. Ensure the terminal is correctly seated on the DIN rail.
Overheating at the terminal
Verify that the wire gauge is within the specified range (0.14mm² - 6mm²) and that the screw is tightened correctly. Ensure the current draw does not exceed the 20A rating.
Pros and Cons
Pros
- Provides a dedicated, safe disconnect point for circuit testing.
- Space-saving double-level design.
- High compatibility with standard DIN rail mounting systems.
- Robust construction suitable for industrial environments.
- Flexible wire accommodation for various conductor sizes.
Cons
- Specific voltage (500V) and current (20A) ratings may limit some high-power applications.
- Requires specific tools for wire termination and disconnection.
- Not suitable for environments requiring intrinsically safe operation without additional safety measures.
Setup, Compatibility & Care
Setup:
- Ensure the UTTB 4-TG is securely mounted onto an NS 35/7.5 or NS 35/15 DIN rail.
- Strip wires to the appropriate length as per the terminal block's specifications (0.14mm² - 6mm²).
- Insert the conductor into the screw terminal and tighten the screw firmly using a suitable screwdriver to ensure a secure connection.
- For the disconnect function, use the designated slot to insert a test probe or disconnect tool.
Compatibility:
- Compatible with NS 35/7.5 and NS 35/15 mounting rails.
- Suitable for copper conductors within the specified cross-section range (0.14mm² - 6mm²).
- Check voltage and current ratings (500V / 20A) against application requirements.
Care:
- Keep the terminal block clean and free from dust and debris. Use a dry or slightly damp cloth for cleaning; avoid abrasive solvents.
- Periodically inspect screw connections for tightness, especially in environments with vibration.
- Ensure the disconnect mechanism operates smoothly.