Qoltec Three-Phase Voltage Stabilizer AVR MULTIPROTECTION | 40kVA | Accuracy ± 3% | Servomotor 3F | LCD | Expert Line

Industrial facilities and large commercial operations often face unstable three-phase power that can damage sensitive equipment. The Qoltec AVR MULTIPROTECTION 40kVA stabilizer is built for such demanding environments, delivering a steady 380/400V output even when input fluctuates between 280V and 430V. Its servomotor-driven regulation ensures precise voltage correction with ±3% accuracy, while the LCD panel provides real-time status monitoring. This floor-standing unit is part of the Expert Line, engineered for continuous operation in workshops, production lines, and server rooms.

Key specifications

• Power rating: 40 kVA
• Input voltage range: 280V – 430V AC (phase-to-phase)
• Output voltage: 380V / 400V AC (phase-to-phase)
• Output voltage accuracy: ± 3%
• Regulation technology: Servomotor controlled
• Phases: 3-phase
• Frequency: 50/60 Hz
• Efficiency: > 95%
• Display: LCD
• Protection: Overload, overvoltage, undervoltage, short circuit, overheating
• Response time: < 1 second (for 10% voltage deviation)
• Cooling: Forced air
• Operating temperature: -10°C to +40°C
• Operating humidity: 0-90% RH (non-condensing)
• Insulation class: F
• Mounting: Floor standing

Why choose it

This stabilizer protects valuable three-phase equipment from voltage irregularities that cause downtime and premature failure. The servomotor mechanism adjusts voltage smoothly without introducing harmonic distortion, preserving power quality for sensitive electronics. With over 95% efficiency, it minimizes energy losses, and the comprehensive protection suite safeguards both the stabilizer and connected loads. The LCD display offers clear, at-a-glance monitoring of input/output voltage and status, simplifying maintenance.

Ideal use cases

• Manufacturing plants with CNC machines, motors, and industrial automation
• Data centers and server rooms requiring stable power for critical IT infrastructure
• Commercial buildings with HVAC systems, elevators, or medical equipment
• Agricultural operations using large pumps or processing machinery
• Any facility where three-phase voltage sags, surges, or fluctuations are common

Good to know

The unit is designed for floor standing installation and operates reliably in ambient temperatures from -10°C to +40°C. Its forced air cooling ensures thermal stability under continuous load. As part of Qoltec's Expert Line, it is built with robust components for long service life. Professional installation by a qualified electrician is recommended due to high power ratings and three-phase connections.