3-Phase Over/Under Voltage Protection Relay 300–500V with LCD Display

Voltage fluctuations and phase faults can silently destroy your motors, compressors, and industrial machinery — this 3-Phase Over/Under Voltage Protection Relay stops damage before it starts.

The amiciKart 3-Phase Protection Relay is a professional-grade, contactor-driven protection device designed for heavy industrial and commercial applications. Operating across a wide 300–500V range, it continuously monitors all three phases in real time and automatically trips the connected contactor the moment it detects overvoltage, undervoltage, voltage imbalance, or phase sequence faults. The built-in LCD display shows live voltage readings and fault codes, so your maintenance team can diagnose issues instantly — no guesswork, no downtime.

Unlike basic inbuilt-relay protectors, this contactor-based system is engineered for high-load environments. All protection thresholds are fully adjustable: overvoltage (390–490V), undervoltage (300–370V), voltage imbalance (5–29%), and trip response time (0.1–25s) — giving you precise control tailored to your specific equipment and site conditions. It is ideal for protecting three-phase motors, water pumps, air compressors, HVAC systems, elevators, CNC machines, and distribution panels in factories, workshops, and commercial buildings across India. Note: External contactor is not included and must be purchased separately based on your load requirement.

Backed by a 1-year warranty and dedicated support via WhatsApp, call, or email, amiciKart ensures you are never left without help. Enjoy free shipping across India, same-day dispatch for orders before 2 PM, and COD available at checkout.

• Complete 3-Phase Fault Protection — Guards against overvoltage, undervoltage, phase unbalance, and phase sequence faults to keep motors, compressors, pumps, HVAC systems, and CNC machines running safely
• Fully Adjustable Protection Settings — Customise overvoltage threshold (390–490V), undervoltage threshold (300–370V), voltage imbalance range (5–29%), and trip action time (0.1–25s) to match your exact load requirements
• Live LCD Monitoring for Instant Diagnosis — Clear LCD screen displays real-time voltage readings, fault status, and parameter settings so technicians can identify and resolve issues without guesswork
• Contactor-Driven Heavy-Duty Design — Controls external contactors for reliable protection of high-load industrial equipment; safer and more robust than small inbuilt relay-type protectors (Note: contactor sold separately)
• Broad Industrial & Commercial Use — Ideal for three-phase motor panels, pump control panels, elevators, HVAC systems, distribution boards, workshops, and commercial buildings across India
• 1-Year Warranty with Dedicated Support — Backed by a 1-year manufacturer warranty; reach our support team via WhatsApp, call (980-970-9898), or email (care@amicikart.com) for fast technical assistance
• Shop with Confidence — Free pan-India shipping, same-day dispatch on orders before 2 PM, 30-day easy returns, and Cash on Delivery (COD) available