| Parameter | Specification |
|---|---|
| Product Model | SUNTREE SQ8T |
| Product Type | Automatic Transfer Switch (ATS) |
| Switching Class | PC Class |
| Case Grade | 63 |
| Rated Operating Current (Ie) | 6A / 10A / 16A / 20A / 25A / 32A / 40A / 50A / 63A |
| Rated Insulation Voltage (Ui) | 690V |
| Rated Impulse Withstand Voltage (Uimp) | 8kV |
| Rated Working Voltage (Ue) | AC200V / AC110V |
| Rated Frequency | 50/60Hz |
| Pole Configuration | 2P / 4P |
| Rated Short-Circuit Current (Iq) | 50kA |
| Short-Circuit Protection Device | RT16-00-63A Fuse |
| Rated Control Voltage (Us) | AC220V, 50Hz |
| Control Voltage Operating Range | 85%Us–110%Us |
| Auxiliary Circuit | AC220V / 110V, 50Hz, Ie=5A |
| Contactor Change-Over Time | <50ms |
| Operation Change-Over Time | <50ms |
| Return Change-Over Time | <50ms |
| Power-Off Time | <50ms |
| Change-Over Operation Time | <50ms |
| Mechanical Life | ≥8,000 Operations |
| Electrical Life | ≥1,500 Operations |
| Usage Category | AC-31B |
The SUNTREE SQ8T is available with two pole configurations to accommodate different AC system requirements:
| Model Series | Pole Configuration | Rated Current |
| SQ8T | 2P | 6A–63A |
| SQ8T | 4P | 6A–63A |
| Product Model | Available Current Ratings |
| SQ8T | 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A |
| Parameter | Specification |
| Rated Working Voltage (Ue) | AC200V / AC110V |
| Rated Insulation Voltage (Ui) | 690V |
| Rated Frequency | 50/60Hz |
| Rated Impulse Withstand Voltage (Uimp) | 8kV |
| Rated Short-Circuit Current (Iq) | 50kA |
| Usage Category | AC-31B |
| Parameter | Specification |
| Contactor Change-Over Time | <50ms |
| Operation Change-Over Time | <50ms |
| Return Change-Over Time | <50ms |
| Power-Off Time | <50ms |
| Change-Over Operation Time | <50ms |
| Switching Design | Two-Station / Two-Position |
| Main Supply | Common Power Supply A |
| Backup Supply | Standby Power Supply B |
| Parameter | Specification |
| Rated Control Voltage (Us) | AC220V, 50Hz |
| Normal Control Voltage Range | 85%Us–110%Us |
| Auxiliary Circuit Voltage | AC220V / 110V, 50Hz |
| Auxiliary Circuit Current (Ie) | 5A |
| Short-Circuit Protection | RT16-00-63A Fuse |
| Protection / Safety Function | Specification |
| Automatic Transfer | Yes |
| Main-to-Standby Transfer | Automatic |
| Automatic Transfer Speed | <50ms |
| Short-Circuit Protection | RT16-00-63A Fuse |
| Switching Class | PC Class |
| Rated Short-Circuit Current | 50kA |
| Power Continuity Function | Automatic Transfer to Standby Supply |
| Return to Main Supply | Automatic Return Switching |
| Parameter | Specification |
| Mechanical Life | ≥8,000 Operations |
| Electrical Life | ≥1,500 Operations |
| Pole Configuration | 2P / 4P |
| Case Grade | 63 |
| Switching Mechanism | Two-Position Change-Over |
The SUNTREE SQ8T uses a two-position A/B configuration, where A is the common/main power supply and B is the standby power supply. When the main power supply fails, the ATS automatically transfers the load to the standby source. When the main supply is available according to the operating configuration, the switch can return to the main power source. The manufacturer specifies switching, return, and power-off times of less than 50ms.
The SUNTREE SQ8T is a PC-class Automatic Transfer Switch (ATS) designed to automatically transfer an electrical load between a main power supply and a standby power supply when the main source fails.
The SQ8T supports rated operating currents from 6A to 63A, with available ratings of 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, and 63A.
The SUNTREE SQ8T has a specified contactor, operation, return, power-off, and change-over operation time of less than 50 milliseconds.
The technical reference lists rated working voltage options of AC200V and AC110V, with a rated insulation voltage of 690V. The rated frequency is 50/60Hz.
The SUNTREE SQ8T is available in 2P and 4P configurations. The appropriate configuration depends on the electrical system and whether the neutral conductor needs to be switched.
2 reviews for SUNTREE SQ8T Automatic Transfer Switch
Kirby –
This looks like a practical option for applications where automatic source switching is important.
Rutherford –
What is the main difference between the SQ8T and the SQ8W models?