A crossover switch is an electrical circuit that allows you to control a single lamp from three or more locations . This is an extension of a hotel switch , where an additional crossover switch is added between the two two-way switches.

This circuit is often used in:
✅ Stairwells (for example switches downstairs, halfway and upstairs).
✅ Long corridors (with switches at different ends and a cross switch in the middle).
✅ Large spaces with multiple entrances (such as a warehouse or conference room).

How does a cross connection work?

• A hotel switch consists of two changeover switches that allow you to operate a lamp from two places.
• With a cross connection, you add an extra cross switch between the two toggle switches, so that you can also switch the lamp from a third (or more) location(s).
• The cross switch changes the connection between the alternating current wires , breaking or closing the circuit regardless of the position of the other switches.

Parts of a crossover

• 2 changeover switches (for the start and end of the circuit).
• 1 or more cross switches (for additional switching points).
• Electrical wires :
  • Brown (phase of feeding).
  • Blue (neutral to the lamp).
  • Black (toggle wires between the switches).
• 1 lamp .

Operation in steps

1. The phase wire (brown) enters at the first changeover switch.
2. Two changeover wires (black) connect the first changeover switch to the crossover switch.
3. The cross switch switches the connection to the correct output.
4. Two changeover wires run from the crossover switch to the second changeover switch.
5. The output of the second changeover switch goes to the lamp.
6. The neutral wire (blue) connects the lamp to the mains power supply.

When you flip one of the switches, the circuit changes and the light turns on or off.

Advantages of a cross connection

✅ More flexibility – Ideal for large spaces or long hallways.
✅ Increased security – You can always switch on the lights when you enter and switch them off when you leave.
✅ Scalable – You can add additional cross switches if you need even more switching locations.