Product Description Protect your valuable electrical equipment with the LEYDEN LE-VAP 63A Adjustable Voltage & Current Protection Device. Designed for residential, commercial and industrial applications, this intelligent protection relay continuously monitors incoming voltage and load current. Whenever abnormal voltage or overload conditions occur, the device disconnects the power supply automatically to protect connected appliances. Once power returns to safe operating conditions, the relay reconnects automatically after the preset recovery delay. The LE-VAP offers complete flexibility with programmable over-voltage, under-voltage, over-current, trip delay, recovery delay and power-on delay settings. Its bright LED display provides instant monitoring of voltage and current while advanced protection logic helps increase appliance life and reduces maintenance costs. Suitable for: Homes Offices Commercial Buildings Factories Water Pumps Air Conditioners Refrigerators Deep Freezers Medical Equipment CNC Machines Industrial Panels Sensitive Electronic Equipment Before Installation Disconnect the main power supply completely. Ensure installation is performed by a qualified electrician. Verify supply voltage is 220-240VAC single phase. Use recommended wire size suitable for 63A load. Install inside a proper electrical distribution board. Wiring INPUT (Top Terminals) N → Neutral Supply L → Live Supply OUTPUT (Bottom Terminals) N → Neutral to Load L → Live to Load Always tighten all terminal screws securely. Initial Setup After installation: Switch ON the main supply. The display performs a self-test. Wait for the Power-On Delay countdown. Output turns ON automatically. Verify voltage and current display. Adjust parameters if required. Programming Instructions Enter Setting Mode Press and hold SET for approximately 3 seconds. Navigation SET → Next Parameter ▲ Increase Value ▼ Decrease Value Power Button → Exit Parameter List P1 Power ON Delay Range: 1–999 Seconds P2 Recovery Delay Range: 1–999 Seconds P3 Over Voltage Protection Range: 130–300V P4 Over Voltage Recovery Range: 125–295V P5 Under Voltage Protection Range: 80–210V P6 Under Voltage Recovery Range: 85–215V P7 Voltage Trip Delay Range: 0.1–10 Seconds P8 Voltage Calibration Factory adjustment. Changing is generally not recommended unless verified with a calibrated meter. P9 Over Current Protection Range: 1–63A P10 Current Trip Delay Range: 0.1–10 Seconds P11 Continuous Over Current Count 0–20 trips OFF disables counting. P12 Current Calibration Factory calibration. Adjustment should only be performed using calibrated test equipment. P13 Frequency Calibration Factory setting. Normally leave unchanged. P14 Display Mode 1 Standard 2 Manual Switch 3 Automatic Switch P15 Automatic Reset ON Automatic Recovery OFF Manual Recovery P16 Protection Action ON Protection Enabled OFF Knife (Bypass) Mode P17 Energy Saving 1 Standard 2 Energy Saving 3 Screen OFF P18 Password Lock Default Password: 112 Changing the password restricts parameter modification. Recommended Settings (Residential) Over Voltage: 270V Under Voltage: 170V Recovery Delay: 30 Seconds Power ON Delay: 5 Seconds Current Limit: 63A Voltage Trip Delay: 0.5 Seconds Current Trip Delay: 1 Second Safety Instructions Installation must be performed only by a qualified electrician. Disconnect the power supply before wiring or maintenance. Use only 220–240VAC single-phase supply. Ensure all wiring complies with local electrical regulations. Tighten all terminal screws securely to avoid overheating. Use copper conductors of appropriate size. Do not exceed the rated current of 63A. Do not install in wet, corrosive, or explosive environments. Keep away from excessive moisture and direct water exposure. Ensure adequate ventilation inside the electrical panel. Never bypass or modify the protection circuitry. Inspect wiring periodically for loose connections. Replace damaged wiring immediately. Keep out of reach of children. Maintenance Check terminal tightness every 6–12 months. Clean using a dry cloth only. Never use solvents or water. Inspect for signs of overheating or discoloration. Disconnect power before servicing. Warranty Terms Warranty Covers Manufacturing defects Internal electronic component failure under normal operating conditions Warranty Does Not Cover Incorrect wiring Reverse polarity connections Burn damage due to loose terminals Overloading beyond 63A Short circuit damage Physical damage Water or moisture damage Fire damage Lightning or natural disasters Unauthorized repairs or modifications Damage caused by improper installation Broken housing, display, or terminals due to mishandling Warranty Conditions Original purchase invoice is required. Product must not be opened or modified. Warranty is limited to repair or replacement of the product. The manufacturer is not liable for indirect damage to connected equipment. IMPORTANT Always use proper-size copper wire according to the co

• ✅ Automatic Recovery Automatically reconnects power after voltage returns within the safe operating range. Recovery delay prevents repeated switching during unstable power conditions.
• ✅ Heavy Duty 63A Capacity Supports loads up to 63 Amps for single-phase electrical systems. DIN Rail mounting design makes installation simple inside distribution boards.

Specifications

Common questions