Phoenix Contact PT 4-FSI/F Fuse Terminal Block - 3208943

Push-in fuse terminal block designed for flat type F (miniature) fuses with 400V nominal voltage a...

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Product Information

Full details

The Phoenix Contact PT 4-FSI/F is a push-in fuse terminal block designed for electrical professionals needing a reliable solution for incorporating miniature (Type F) fuses into control panels. Its key benefit is tool-free wiring for both solid conductors and conductors with wire end ferrules, significantly speeding up installation. A minor consideration is its specific fuse type compatibility, requiring Type F fuses.

All features

Model Part Number3208943
BrandPhoenix Contact

Extended Product Information

FAQs

What type of fuse does the PT 4-FSI/F use?

The PT 4-FSI/F is designed specifically for Type F (miniature) fuses.

Can I use stranded wire without a ferrule?

No, for stranded conductors, a wire end ferrule must be used with this push-in terminal block to ensure a secure connection.

What is the maximum wire size this terminal block can accommodate?

It can accommodate wire cross-sections from 0.2 mm² up to 6 mm² (equivalent to AWG 24 to 10).

What is the voltage and current rating?

The terminal block has a nominal voltage rating of 400V and a current rating of 10A.

Does it require special tools for wiring?

No, the push-in termination allows for tool-free wiring of conductors.

What type of DIN rail can this be mounted on?

It is designed to mount on standard 35mm DIN rails, specifically NS 35/7.5 or NS 35/15.

How do I replace a blown fuse?

Once the circuit is de-energized, simply remove the old fuse from its slot and insert a new fuse of the correct rating.

Troubleshooting

Terminal block not holding conductor securely

Ensure the conductor is solid or has a properly crimped wire end ferrule. Verify the conductor is inserted to the full depth of the push-in terminal. Check if the conductor size is within the specified range (0.2mm² to 6mm²).

Fuse does not make contact or circuit does not work

Confirm that a Type F (miniature) fuse is used. Ensure the fuse is correctly seated in the terminal block's slot. Check the fuse itself for continuity.

Difficulty inserting conductor

Make sure the conductor is stripped cleanly or the wire end ferrule is properly applied. Avoid twisting stranded wires too much before insertion. If using solid wire, ensure it is straight.

Terminal block becomes loose on DIN rail

Verify the DIN rail is properly mounted and secured. Ensure the terminal block's mounting mechanism is fully engaged with the rail.

Pros and Cons

Pros

  • Tool-free wiring reduces installation time and complexity.
  • Space-saving design with a narrow 6.2 mm width.
  • Secure and reliable connection for various conductor types.
  • Clear visual indication of fuse status.
  • Robust construction for industrial environments.

Cons

  • Only compatible with Type F (miniature) fuses.
  • Requires conductors with wire end ferrules for stranded wire, adding a small step.
  • Limited to a 10A current rating, not suitable for high-power circuits.
  • Black color may not be ideal for all panel aesthetics.

Setup, Compatibility & Care

Setup:

  1. Ensure the power to the circuit is switched OFF before installation.
  2. Select the appropriate Type F (miniature) fuse for the circuit's requirements (up to 10A).
  3. Strip the conductor to the recommended length (refer to conductor manufacturer's specifications if using wire end ferrules).
  4. For solid conductors, insert directly into the push-in terminal.
  5. For stranded conductors, crimp a suitable wire end ferrule onto the conductor end and insert into the push-in terminal.
  6. Mount the terminal block onto a 35mm DIN rail (NS 35/7.5 or NS 35/15).
  7. Insert the Type F fuse into the designated slot.
  8. Turn ON power once all connections are verified.

Compatibility:

  • Fuses: Only compatible with Type F (miniature) fuses.
  • Conductors: Suitable for solid conductors and conductors with wire end ferrules, ranging from 0.2 mm² to 6 mm² (AWG 24 - 10).
  • DIN Rails: Designed for mounting on NS 35/7.5 and NS 35/15 standard DIN rails.

Care:

  • Keep the terminal block clean and free from dust and debris.
  • Periodically inspect connections for tightness and signs of wear.
  • Use a dry or slightly damp cloth for cleaning. Avoid solvents or abrasive cleaners.
  • Ensure the fuse is correctly seated and is the appropriate rating.