SUNTREE Automatic Transfer Switches (ATS) are designed to automatically transfer electrical loads between a primary and backup power source. They are commonly used in backup power systems, generators, UPS systems, inverters, solar systems, and emergency power applications.
This category includes the SUNTREE SQ8W and SUNTREE SQ8T, both available for 6A–63A loads but with different switching classes, voltage ratings, and transfer speeds.
| Specification | SUNTREE SQ8W | SUNTREE SQ8T |
|---|---|---|
| Product Type | Automatic Transfer Switch | Automatic Transfer Switch |
| Switching Class | CB Class | PC Class |
| Rated Current | 6A–63A | 6A–63A |
| Rated Voltage | AC 230/400V | AC 110/200V |
| Pole Configuration | — | 2P / 4P |
| Transfer Time | ≤3 seconds | <50ms |
| Main Application | Standard backup power transfer | High-speed power transfer |
| Protection | Overload & short-circuit protection | According to system protection design |
| Application | Recommended Model | How It Is Used |
| Residential backup power | SQ8W / SQ8T | Transfers loads from the utility supply to backup power |
| Generator systems | SQ8W / SQ8T | Automatically switches between utility and generator |
| Solar & inverter systems | SQ8W / SQ8T | Transfers loads between the main and backup power sources |
| UPS systems | SQ8T | Suitable for applications requiring faster source transfer |
| Critical electrical loads | SQ8T | Provides very fast transfer with <50ms switching time |
| Emergency power systems | SQ8W / SQ8T | Maintains power by switching to a standby source |
Choose the SUNTREE SQ8W when you need a practical ATS for standard backup power, generator, or automatic source transfer applications where a transfer time of up to 3 seconds is acceptable.
Choose the SUNTREE SQ8T when fast transfer is a priority. With a specified transfer time of less than 50ms, it is better suited to applications where minimizing power interruption is important.
Before selecting an ATS, always check the load current, system voltage, pole configuration, backup power source, and required transfer time.
PAS Solar supplies SUNTREE Automatic Transfer Switches for backup power, generator, UPS, inverter, solar, and electrical distribution applications.
An Automatic Transfer Switch (ATS) automatically transfers an electrical load between a primary power source and a backup power source when the main supply fails.
The main differences are their switching class, voltage rating, and transfer speed. SQ8W has a transfer time of up to 3 seconds, while SQ8T provides a transfer time of less than 50ms.
Yes. They can be used in suitable generator backup systems to automatically transfer electrical loads between the utility supply and standby generator.
The SUNTREE SQ8T is the better choice when very fast automatic transfer is required, with a specified transfer time of less than 50ms.
What is an Automatic Transfer Switch?
What is the difference between SUNTREE SQ8W and SQ8T?
Can SUNTREE ATS products be used with generators?
Which SUNTREE ATS is better for fast transfer?
