Automatic Transfer Switching Equipment (ATSE)
Dual power changeover equipment from 100A to 3200A, in 2-pole, 3-pole and 4-pole versions, PC class and CC class, tested to IEC 60947-6-1. Use the selection matrix to shortlist a frame, then open the series page for the full parameter table.
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MOTE Electric automatic transfer switching equipment is tested to IEC 60947-6-1 and available from 100A to 3200A in PC class and CC class configurations.
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The range is offered in 2-pole, 3-pole and 4-pole versions with adjustable transfer time per frame.
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Selection follows current rating, pole configuration, class and the required transfer time for the loads served.
Shortlist by current rating, poles and class
Each row maps a current band to the pole options, class availability and the typical transfer time used in that band.
| Current Rating | Poles | Class | Typical Transfer Time | Typical Use |
|---|---|---|---|---|
| 100A – 320A | 2P / 3P / 4P | PC / CC | 0.5 s – 3 s | Essential lighting, small plant rooms |
| 400A – 800A | 2P / 3P / 4P | PC / CC | 0.8 s – 5 s | Building main boards, hospitals, data rooms |
| 1000A – 1600A | 3P / 4P | PC / CC | 1 s – 10 s | Hospital mains, data center feeds, risers |
| 2000A – 3200A | 3P / 4P | PC | 1.5 s – 15 s | Utility incomers, large data halls, process plants |
ATSE frames by current band
Open a frame for the full parameter table, datasheet request and typical applications.
PC class or CC class
The class is a coordination decision. PC class relies on upstream protection to break fault current, while CC class includes an integral breaking element.
| Property | PC class | CC class |
|---|---|---|
| Short-circuit making and carrying | Yes | Yes |
| Short-circuit breaking by the changeover device | No — relies on upstream device | Yes — integral breaking element |
| Typical use | Main incomers with coordinated upstream protection | Equipment and sub-boards close to the source |
| Standard reference | IEC 60947-6-1 | IEC 60947-6-1 |
Confirm the class against the fault level
Where the changeover sits close to the transformer and the fault level is high, CC class is commonly specified. On main incomers with coordinated upstream protection, PC class is usual. Either way, the decision belongs to the short-circuit coordination study.
Series datasheets and IEC 60947-6-1 type-test evidence are issued on request so the correct revision reaches your project file.
Request datasheetATSE questions buyers ask us
Direct answers to the questions that come up most often during procurement.
What is the difference between PC class and CC class ATSE?
PC class carries and closes on short-circuit current but does not break it, relying on the upstream device. CC class includes an integral short-circuit breaking element, so the changeover itself is rated to break fault current.
How do I choose the current rating for an ATSE?
Start from the board design current and the restart behaviour of the largest load. For motor-heavy boards, restart current — not running current — decides the rating.
Does the ATSE comply with IEC 60947-6-1?
Yes. The ATSE range is tested to IEC 60947-6-1, and type-test evidence is available on request during procurement review.
Are 2-pole and 4-pole versions available across the range?
2-pole, 3-pole and 4-pole versions are available on the smaller frames, while the larger frames from 1000A upwards are supplied in 3-pole and 4-pole configurations.
Need the ATSE sizing method? Read the ATSE sizing guide for generator backup systems or contact info@motegrid.com with your single-line diagram.
Request an ATSE quote
Send the rated current, pole configuration, class preference and required transfer time. We will confirm the frame and delay settings.