63A/80A Self-Recovery Voltage Protector with LCD Display
63A/80A Self-Recovery Voltage Protector with LCD Display
SVP-917 Self-Recovery Over & Under Voltage Protector with LCD Display
Safeguard your home, apartment, or commercial electrical circuits with the SVP-917 Adjustable Self-Recovery Voltage & Current Limiting Protector. Rated for AC 85–300V at 63A or 80A, this DIN-rail-mounted device continuously monitors your single-phase line and automatically disconnects—and reconnects—when voltage or current returns to safe levels. The backlit LCD gives you real-time readings of energy (kWh), current (A), voltage (V), and active power (W), putting complete circuit visibility right on your panel. Made in Mainland China.
Key Features
- Backlit LCD Display: Monitors total active energy (kWh, 4-digit + 1 decimal), real-time current (A), voltage (V), and active power (W) at a glance.
- Bi-Directional Energy Measurement: Accurately measures reverse active energy and rolls it into the total active energy reading.
- Integrated Surge Protection: Built-in lightning/transient overvoltage protection prevents false tripping and guards the unit itself at peak fault voltages.
- Auto or Manual Reclosing: Choose automatic self-recovery (reconnects after a user-defined delay once voltage stabilizes) or manual reclosing for full control.
- Unstable Supply Detection: Detects loose-connection faults and intermittent power cycling—disconnects the line to protect downstream equipment.
- Malignant Load (Resistive Load Limit) Mode: Ideal for apartments and student dormitories—limits pure resistive overload for enhanced electrical safety.
- Scheduled Cycle Switching: Programmable circuit output cycle on/off pattern for timed control applications.
- Selective Protection: Enable or disable overvoltage, undervoltage, and overcurrent protections independently at any time.
- LED Fault Indicators: Dedicated LEDs signal the exact fault type—overvoltage, undervoltage, or overcurrent—for rapid diagnostics.
- 35 mm DIN Rail Mount: Fits standard distribution boards for quick, tool-friendly installation.
Technical Specifications
| Model | SVP-917 |
| Input Voltage | AC 85–300V, 50/60 Hz |
| Rated Current | 63A or 80A (optional) |
| Overvoltage Protection Range | 85V–300V / OFF (default: 270V) |
| Overvoltage Trip Time | 0.1s–60s (default: 0.1s) |
| Undervoltage Protection Range | 85V–300V / OFF (default: 170V) |
| Undervoltage Trip Time | 0.1s–60s (default: 0.1s) |
| Overcurrent Adjustment Range | 1–63A or 1–80A |
| Overcurrent Action Time | 0.1s–60s (default: 0.1s) |
| Recovery Delay Time | 1s–512s (default: 60s) |
| Power Consumption | <1W |
| Mechanical Life | 100,000 operations |
| Installation | 35 mm DIN Rail |
| Country of Origin | Made in Mainland China |
What's in the Box
- 1× SVP-917 Over & Under Voltage Protector
Important Notes
- Actual color may vary slightly from product images due to monitor settings and lighting conditions.
- Please allow ±1 mm–1 cm dimensional tolerance due to manual measurement.
Electrical Safety Resource
For guidance on safe electrical installation practices and circuit protection standards, refer to the U.S. Consumer Product Safety Commission – Electrical Safety resource center.
Learn more: Circuit breaker
Frequently Asked Questions
Q: What is the difference between the 63A and 80A versions of this voltage protector?
A: The current rating indicates the maximum continuous load current the device can handle. The 63A model suits most standard residential circuits, while the 80A model is better suited for higher-demand circuits such as large appliances, workshop panels, or light commercial applications. Both versions offer the same adjustable voltage and overcurrent protection features.
Q: Can the SVP-917 protector reconnect automatically after a fault clears?
A: Yes. When set to auto-reclosing mode, the device will wait for the user-programmed recovery delay (1–512 seconds, default 60s) after the voltage returns to normal, then automatically reconnect the circuit. If you prefer manual control, simply switch it to manual-reclosing mode so the circuit only reconnects when you press the reset button.
Q: How do I install this voltage protector in my distribution board?
A: The SVP-917 is designed for standard 35 mm DIN rail installation, making it compatible with most residential and commercial distribution boards. Snap it onto the DIN rail, wire the input and output terminals according to the label markings, and set your desired voltage and current thresholds via the front panel buttons. Always ensure the main breaker is off before installation and consult a licensed electrician if you are unsure.
Q: Can I disable individual protection functions (e.g., keep overcurrent active but turn off undervoltage protection)?
A: Absolutely. The SVP-917 features independent enable/disable controls for overvoltage, undervoltage, and overcurrent protections. You can turn any one or all of them off at any time without affecting the others, giving you full flexibility to tailor the protection to your specific circuit requirements.