PMA50A480 - PUMP PROTECTION RELAY 440-480VAC

Why Choose the PMA50A480?

Ensure reliable pump operation with the Lovato PMA50A480 pump protection relay. Designed for single-phase and three-phase systems on 440...480VAC supplies, it monitors maximum AC current and minimum cosφ to protect equipment. The device detects phase loss and incorrect phase sequence, providing one relay output for decisive control. Simple potentiometer-based setup and selectable 5 A or 16 A rated currents streamline commissioning.

Built for demanding environments, the PMA50 series offers Ith 8 A and a 6 kV impulse withstand rating, with a mechanical life of 30000000 cycles. Operating from -20 to +60 °C and weighing 251 g, it suits control panels where robustness matters. Compliance with IEC/EN 60255-5, 61000-6-2, 61000-6-3, UL 508 and CSA C22.2 n° 14 supports integration across industrial installations.

Key Benefits

• Protects single- and three-phase pumps on 440...480VAC supplies.
• Monitors maximum AC current and minimum cosφ for reliable protection.
• Detects phase loss and incorrect phase sequence to safeguard motors.
• Selectable 5 A or 16 A rated current to match application needs.
• Simple commissioning via potentiometers, no programming tools.
• One relay output for straightforward control integration.
• Rugged design with 6 kV Uimp and 30000000-cycle mechanical life.

Technical Specification

• Product type designation: PMA50
• Ith (IEC): 8 A
• Mechanical life: 30000000 cycles
• Terminal tightening torque (max): 0.8 Nm
• Rated impulse withstand voltage Uimp: 6 kV
• Operating temperature: -20 to +60 °C
• Storage temperature: -30 to +80 °C
• Weight: 251 g

What’s Included

• Lovato PMA50A480 pump protection relay
• Installation and setup leaflet
• Protective packaging for transit

Applications

• Pump control panels for industrial process lines
• Water and wastewater pumping stations
• Irrigation and agricultural pumping systems
• HVAC circulation and booster pumps
• Building services and utility pump monitoring

Safety note: Installation should be performed by a qualified electrician. Isolate power before wiring and observe stated voltage, torque and environmental limits, following applicable standards.