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Prodcut Details
The Soltree ST2-VA5 Over/Under Voltage & Current Protector is a smart and precise protection device designed for safeguarding electrical systems in residential, commercial, and industrial applications. It provides reliable protection against overvoltage, undervoltage, and overcurrent, featuring an advanced microcontroller for intelligent control. With a large LED digital display and customizable settings, the ST2-VA5 ensures stable operation and enhanced power safety for your electrical equipment.
Over/Under Voltage Protection – Automatically disconnects when voltage exceeds or drops below the set range.
Overcurrent Protection – Prevents damage from overload and overheating.
Large LED Digital Display – Real-time monitoring of voltage and current values.
Adjustable Parameter Settings – Flexible setup for voltage, current, and delay values.
Customizable Logo Display – Supports personalized branding for OEM/ODM orders.
Microcontroller-Based Intelligent Control – Ensures high accuracy and reliability.
DIN-Rail Mounting – Easy and compact installation for various environments.
| Item | Specification |
|---|---|
| Supply Terminals | N, L |
| Rated Supply Voltage | AC 220V/DC 85–300V |
| Rated Frequency | 40/50/60Hz |
| Over/Under Voltage Setting Range | AC130–300V / DC138–300V |
| Overcurrent Setting Range | AC10–220V / DC15–220V |
| Voltage Hysteresis | 5V |
| Overvoltage Trip Delay | 0.5s |
| Voltage Accuracy | <1% |
| Max Operating Phase Voltage | 350V |
| Max Operating Current | 40A / 63A / 80A / 100A |
| Altitude | ≤2000m |
| Permissible Humidity | ≤90% at 40°C (non-condensing) |
| Ambient Temperature | -25°C to +55°C |
| Size | 81 × 36 × 67.5 mm |
| Installation | 35mm DIN-rail mounting |
Residential: Safeguard home appliances such as air conditioners, refrigerators, and washing machines.
Commercial: Maintain stable operation of office equipment, retail lighting, and restaurant devices.
Industrial: Protect motors, pumps, and machinery from power fluctuations.
Renewable Energy Systems: Ideal for solar or off-grid installations requiring precise voltage regulation.
Parameter Adjustment: Long press the “SET” key for 5 seconds to enter the setting mode.
Use the UP and DOWN keys to adjust overvoltage, undervoltage, and overcurrent parameters.
Display Modes:
Mode 1 (Standard): P1–P19 parameters display.
Mode 2 (Manual): View voltage (U-), power (P-), current (A-), and frequency (H-).
Mode 3 (Auto): Automatically cycles through all parameters.
Thank you for choosing Soltree Electrical Co., Ltd.
We are committed to providing high-quality products and professional support.
For customization, technical consultation, or orders, please contact us directly.
📞 Tel/WhatsApp: +86-15658672325
📧 Email: jacky@cnsoltree.com
👉 We reply to all inquiries within 12 hours.
Soltree is a professional manufacturer of low-voltage electrical products with over 15 years of industry experience. We specialize in circuit breakers, RCCBs, surge protectors, power meters, and smart WiFi devices, providing reliable solutions for residential, commercial, and industrial applications.
Our products boast customizable materials and dimensions, ensuring a tailored experience. With a range of materials to choose from and the ability to adjust sizes to your liking, our offerings are designed to meet your unique needs and preferences.
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