100Amps TPN Automatic ChangeOver Switch (ATS

What is it?

Socomec 100Amps TPN Automatic ChangeOver is an automatic transfer switch (ATS) that switches a load between two power sources without manual intervention. It is rated 100A in a triple-pole-plus-neutral configuration for three-phase installations that use a neutral.

How does it work?

The ATS monitors the preferred supply and, when that source fails or goes out of tolerance, transfers the load automatically to the alternate source. Once the preferred source returns and stabilises, it switches the load back, removing the need to operate a manual changeover during outages.

Practical uses

- Keep facilities running by switching between grid and generator during outages.
- Support offices, shops and residential sites that need automatic changeover without manual switching.
- Standardise source switching on projects using three-phase plus neutral distribution.

Who should consider a different solution?

- Single-phase-only installations, which require a 1P+N automatic changeover solution.
- Applications where total load current exceeds 100A; choose a higher-rated ATS for those projects.

Installation

Fixed installation by a qualified electrician is required. The ATS is integrated between two power sources and the load distribution, with cables and protective devices selected to suit a TPN circuit and the project’s design and regulations.

Compatibility

- System type: confirm your installation uses three phases plus neutral.
- Load capacity: ensure the ATS current rating matches your maximum load and coordinates with upstream protection.
- Source arrangement: agree with your installer how it interfaces with your mains and generator setup, including the preferred source and return-to-normal logic.

What you should know before buying

- Engage your electrician early to confirm the rating, source arrangement and installation space.
- Plan cable routes and protective devices suitable for a TPN installation.
- Decide the preferred source and return logic during project planning so the changeover behaviour matches your site’s needs.

Why buy from us?

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