Socomec ATyS t M / g M: transformer and genset management, 125 to 3200 A
ATyS t M and ATyS g M cover Socomec’s higher-current back-to-back ATS range, from 125 to 3200 A, built for transformer switching (t M) or straightforward genset management (g M) at a facility scale well above the small ATyS M/S families.
Technical specification
| Model | Current | Poles | Voltage | Transfer time | Type | Mounting | Control / comms |
|---|---|---|---|---|---|---|---|
| ATyS t M | 125–3200 A | – | – | – | Panel | Side-by-side or back-to-back | Transformer (building) management |
| ATyS g M | 125–3200 A | – | – | – | Panel | Side-by-side or back-to-back | Simple genset management |
Source of the values: Socomec ATyS t M / ATyS g M user manual. Both codes share the ATyS family’s 125–3200 A back-to-back range confirmed from Socomec’s own user manuals; pole count and exact voltage depend on the specific size ordered and were not confirmed at the individual-rating level. An en dash means the manufacturer does not publish that value in the source we hold; we do not fill it in with an estimate. Confirm every figure against the current manufacturer document before it is written into a contract.
The references we quote in this family are ATyS t M and ATyS g M. Send us the load, the phase and the transfer requirement, and we will confirm availability and lead time.
Which one should you choose?
t M and g M solve different management problems at the same current range
ATyS t M is positioned specifically for transformer (building) management, while ATyS g M handles simple genset management. Both share the 125-3200 A range, so the current rating alone does not tell you which one a project needs; the source configuration does.
Side-by-side or back-to-back mounting changes the switchgear footprint
The back-to-back configuration mentioned in Socomec’s own range overview is a compact mounting arrangement distinct from a side-by-side layout; confirm which arrangement the panel design assumes before the switchgear enclosure dimensions are finalised.
This range sits directly above the smaller ATyS M/S families, do not undersize into it
At 125 A, the bottom of this range overlaps with the top of the ATyS S family; the real differentiator at that boundary is the transformer or genset management role, not just the ampere figure. If the project is genuinely a small genset backup rather than a managed transformer or larger genset, ATyS S may be the simpler and cheaper fit.
The genset setting dials shown on ATyS g’s control module are a real day-to-day interface
The physical control module carries dedicated dials for nominal voltage, voltage deviation, failure time and return time settings, which an operator adjusts directly on the unit rather than through a separate software tool. Plan for on-site commissioning time to set these dials correctly for the actual generator being managed.
Where it fits, and where it does not
Fits a facility-scale transformer switching (t M) or genset management (g M) role from 125 to 3200 A. Does not fit a small genset backup role at the low end of this range; check ATyS S first; and does not fit a role needing the more advanced power-management features of ATyS p M.
What we need in order to quote it
- Ampere size needed within 125 to 3200 A
- Transformer management (t M) or simple genset management (g M)
- Side-by-side or back-to-back mounting preference
- Confirmation that the project is not better served by ATyS S or ATyS p M
Request a Quote
Tell us the usable capacity, the protocol and the delivery country. A priced quote comes back within 48 hours, usually with a second option so the trade-off is visible.
