Adjustable Digital Voltage and Current Relay 220V 40A 63A Household Circuit Surge Protector Switch with LCD Display
Useful Little Things
311 Sold
Useful Little Things
311 Sold
rated current:
40a
Safeguard sensitive household electronics, motor appliances, and electrical circuits from dangerous voltage fluctuations with our adjustable digital voltage and current relay 220V 40A 63A household circuit surge protector switch with LCD display. Engineered for DIN-rail distribution board installation, this intelligent protective relay continuously monitors live line AC voltage and current draw in real time. Featuring customizable over-voltage, under-voltage, and over-current protection limits, it automatically cuts off power to downstream circuits the moment grid conditions exceed safe operational parameters. Once voltage and current normalize, the internal microcomputer automatically restores power after a programmable delay, shielding appliances like air conditioners, refrigerators, and motors from damaging power-on surges. Equipped with a bright dual digital display panel presenting real-time volts and amps, this heavy-duty protector provides an essential safety line for home, office, and industrial electrical panels.
KEY FEATURES
Comprehensive Circuit Protection: Combines over-voltage, under-voltage, and over-current limit protection within a single automated DIN-rail module.
Real-Time Dual Digital LED Screen: High-contrast dual display panel presents live AC voltage (V) and load current (A) simultaneously for instant visual status checks.
Programmable Threshold Setpoints: Allows precise user configuration of high/low voltage limits, maximum current trip points, and automatic recovery delay times.
Automatic Power Restoration: Intelligently restores circuit power automatically once grid voltage and current return to stable operating thresholds.
Power-On Delay Safeguard: Built-in re-connection timer delay prevents repeated rapid power cycling that can damage HVAC compressors and electric motors.
SPECIFICATIONS AND DISPLAY GUIDE
| Technical Specification | Feature and Performance Details |
|---|---|
| Nominal Operating Voltage | 220V AC (50Hz / 60Hz) |
| Rated Load Current Options | Heavy-Duty 40A / 63A Current Capacity Options |
| Over-Voltage Protection Range | 230V to 300V AC (Programmable Threshold) |
| Under-Voltage Protection Range | 140V to 210V AC (Programmable Threshold) |
| Over-Current Protection Range | 1A to 40A / 63A (Programmable Threshold) |
| Power Restoration Delay Time | 1 to 500 Seconds (Adjustable Timer Delay) |
| Mounting Standard | 35mm Standard Distribution DIN-Rail Enclosure |
| Primary Applications | Whole-House Distribution Panels, Air Conditioners, Refrigerators, and Heavy Motor Loads |
WHY CHOOSE OUR ADJUSTABLE VOLTAGE AND CURRENT RELAY
Standard circuit breakers only trip during extreme short circuits or thermal overloads, leaving sensitive electronics completely vulnerable to dangerous high-voltage surges, grid brownouts, and phase instabilities. Fixed plug-in surge strips lack real-time digital monitoring and cannot shut off power to hardwired heavy appliances when grid voltage drops dangerously low. This DIN-rail digital protective relay combines customizable high/low voltage cutoffs, precise current monitoring, automatic delay restoration, and heavy-duty 40A/63A switching capacity into a complete electrical panel defense unit.
PERFECT FOR (OCCASIONS AND USES)
Whole-House Power Protection: Install at the main distribution panel to protect home appliances from power grid surges, lightning spikes, and low-voltage brownouts.
HVAC and Compressor Safety: Shield expensive air conditioners, heat pumps, and refrigeration units from low-voltage burnout and immediate re-ignition surges.
Industrial and Workshop Equipment: Prevent motor damage and power supply failures in workshop tools, air compressors, and heavy single-phase machinery.
