> ## Documentation Index
> Fetch the complete documentation index at: https://docs.totemdigital.ro/llms.txt
> Use this file to discover all available pages before exploring further.

# Installing the CN101 Timer: Dimensions and Wiring Diagrams

> Mounting dimensions of the CN101 timer and the type A, B and C connection diagrams for powering and switching electrical equipment of up to 16A.

The CN101 timer mounts on a DIN rail or with screws and is wired in one of three ways (type A, B or C), depending on the model code. This page covers the mounting dimensions and the connection diagrams.

<Warning>
  Disconnect the power before installation. Wiring must be done by a qualified electrician.
</Warning>

## Dimensions

| Dimension | Value |
| - | - |
| Body width | 60 mm |
| Body height | 60 mm |
| Mounting hole spacing (horizontal) | 54 mm |
| Mounting hole spacing (vertical) | 47 mm |
| Depth | 32 mm (21 mm to the panel) |
| Mounting holes | Φ3.2 × 4 |

## Connection diagrams

Timer terminals: **IN** (timer power), **16A** (switched contact), **NO** (normally open), **NC** (normally closed), **L** (live), **N** (neutral).

<Tabs>
  <Tab title="Type A">
    The timer power (**IN**) connects between live (**L**) and neutral (**N**). The **16A** contact switches the live line to the electrical appliance; neutral goes directly to the appliance.
  </Tab>

  <Tab title="Type B">
    The timer power (**IN**) connects between **L** and **N**. The changeover contact has two outputs: **NO** (normally open, closes when the timer is on) and **NC** (normally closed, opens when the timer is on).
  </Tab>

  <Tab title="Type C">
    The **L** and **N** input terminals receive power, and the output (**Load**) **N** and **L** terminals feed the electrical appliance through the 16A contact.
  </Tab>
</Tabs>

<Note>
  Maximum load: 16A resistive, 10A inductive or 2000W lamps, at 250V AC.
</Note>


## Related topics

- [CN101 Timer: Description and Full Technical Specifications](/en/timere-electronice/cn101/prezentare.md)
- [Installing and wiring the ZYT16G-2a/3a timer](/en/timere-electronice/zyt16g/instalare-conectare.md)
- [Electronic timer user manuals by Totem Digital Romania](/en/timere-electronice/prezentare.md)
- [Programming the CN101 Timer: Clock and Weekly Programs](/en/timere-electronice/cn101/programare.md)
- [ZYT16G-2a/3a timer: description and technical specifications](/en/timere-electronice/zyt16g/prezentare.md)


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.