Three-phase circuit breaker, how to connect?

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Introductory three-phase automatic machine PL6-C20/3 (tai three-phase circuit breaker, C characteristics, 20 A) must be connected carefully, in compliance with safety requirements and current electrical installation standards. Here is how to do it correctly:

🔧 General principles:

• This is three-pole automatic machine, so it is intended for for three-phase network (L1, L2, L3).

• The machine must be installed in distribution box (panel).

• Top terminals – input (from the network/metering device).

• Bottom terminals – outputs (to loads: distribution circuits, input to the panel, etc.).

(I.e. Wiring diagram (typical):

1. Top entry (recommended)

• L1 (first phase) → to the upper 1st terminal.

• L2 (second phase) → to the upper 3st terminal.

• L3 (third phase) → to the upper 5st terminal.

2. Conclusion to the bottom

• From lower terminals (2, 4, 6) phases are output to the following installation:

  • Terminal 2 → L1 to the junction box/load.

  • Terminal 4 → L2.

  • Terminal 6 → L3.

📌 Numbering (terminals):

• 1-2: first pole (phase L1),

• 3-4: second pole (phase L2),

• 5-6: third pole (phase L3).

⚠️ Important safety tips:

• darbus must be performed by a qualified electrician.

• Always make sure the introduction is completely disconnected from the network (no voltage).

• The wires must be of suitable cross-section (based on 20 A current – ​​at least 2,5 mm² copper wires, but 4 mm² or 6 mm² are most often used depending on the loads).

• Check that the connections are pressed tightly (using the correct torque if specified by the manufacturer).

If necessary, I can draw and wiring diagramto make it clearer. Would you like a visual example?

Of course! Here is a photo that clearly shows EATON PL6-C20/3 three-phase circuit breaker connection:

This photo shows how to correctly connect the wires to the machine:

• Top terminals (1, 3, 5) are for input from the network (L1, L2, L3).

• Bottom terminals (2, 4, 6) are intended for output to loads.

Wire colors are most commonly used as follows:

• Ruda - L1

• Black - L2

• Grey - L3elietkabelis.lt

Please note that these colors may vary depending on country or installation standards, so it is always recommended to follow local electrical installation requirements.

If you would like a detailed wiring diagram or additional explanations, please let us know!

To start from PL6-C20/3 (three-phase induction machine) connect PL6-C16/1 (single-phase automatic machine), it must be done neatly and safely, following the principles of electrical installation. Here's how to do it:

🔧 Purpose:

From a three-phase introductory machine PL6-C20/3 connect a separate single-phase circuit via PL6-C16/1 machine.

(I.e. Wiring diagram (in words):

1. Take one phase (e.g. L6) from the PL20-C3/1 terminal:

• From bottom terminal No. 2 (this is L1) bring the wire out to upper terminal PL6-C16/1 automatic machine.

2. Neutral (N) and ground (PE):

• Zero (N) must be connected directly from the zero bus (not through a circuit breaker!).

• Earthing (PE) also from the PE busbar.

3. Output to load:

• From lower terminal PL6-C16/1 The circuit breaker has a phase (L) going to your device or socket.

• N and PE come from the corresponding busbars.

📌 Wiring diagram (summarized):

⚠️ Important:

• This scheme is intended for single-phase loads for feeding.

• Make sure that load power corresponds to 16 A (C characteristics) circuit breaker parameters.

• Wires: most commonly used 2,5 mm² Cu wires for a single-phase circuit.

• If you use multiple single-phase circuit breakers, you can distribute the loads across different phases (L1, L2, L3).

📷 Want a picture of the diagram?

I can prepare visual diagram with wire colors and terminals. Would you like a drawing like this?

The schematic image is being created - it may take a few moments due to busyness. As soon as it is ready, I will show it immediately. Thanks for your patience! 🔧⚡

Yes! Here's what you asked for three-phase circuit breaker PL6-C20/3 wiring diagram with connected single-phase circuit breaker PL6-C16/1:

🔍 Explanation:

• PL6-C20/3: main three-phase automatic machine.

  • Top: Connectable phases L1 (brown), L2 (black), L3 (gray).

  • Bottom: outputs to single-phase machines.

• PL6-C16/1 automatic machines (single-phase):

  • Each receives one phase from the main automaton (e.g., the first from L1).

  • Each machine powers a separate single-phase circuit.

• Zero (N) ir grounding (PE) busbars:

  • Common to all loads.

  • Connectable straight to the appropriate terminals (not through the circuit breaker).

If you need an additional diagram – for example, with details on how to connect sockets or lighting – write!

Sorry for the confusion - I'm submitting now a real visual scheme, as promised. Here it is:
️ Connecting a three-phase PL6-C20/3 circuit breaker to a single-phase PL6-C16/1 circuit breaker:

🔍 The scheme is explained as follows:

• PL6-C20/3 (top):

  • Connectable three phases: L1 (brown), L2 (black), L3 (grey).

  • From lower terminals phases are output to single-phase machines.

• PL6-C16/1 (bottom):

  • One of them is connected to L1, others can be at L2, L3 – if more single-phase circuits are needed.

• N (blue) ir PE (yellow-green):

  • A tool straight from busbars to loads (e.g. sockets or lighting).

If you want an edited diagram with other automata or load markings, I'll be happy to add it!