Unipower 40A HPL Motor Load Monitor, 100V AC, 400V AC, Operating Temperature -15°C to 50°C HPL500

Unipower HPL500 40A Motor Load Monitor offers precise monitoring and protection for electric motors in industrial and commercial applications. It accurately measures true motor load up to 40 amps and supports a wide supply voltage range from 100 to 400 V AC, making it suitable for varied electrical systems globally.

The monitor features a clear digital display showing motor kilowatt load and load percentage. Its programmable trips provide over and under-load protection, critical for preventing damage from blocked or stalled motors. Three digital timers allow filtering of transient startup surges, improving operational reliability.

The HPL500's innovative design includes a current feed-through tube that removes the need for additional current transformers when monitoring motors up to 40 amps, simplifying installation and reducing costs. The programmable 0(4)-20 mA analogue output enables integration with control systems for automated motor load management.

This device operates reliably in ambient temperatures from -15°C to 50°C with an IP20 enclosure rating. Applications include dry run protection for pumps, fault detection on fans such as broken belts or closed dampers, safety for conveyors, separation screens, macerators, scrapers, and various mechanical drives including gearboxes and chains.

All settings are secured by a key lock to prevent accidental alterations. The HPL500 replaces the older HPL420 model, featuring improved functionality while retaining ease of setup.

Measures continuous motor current up to 40 amps without external transformers. Programmable motor voltage supply from 100 to 400 V AC single-phase and 100 to 575 V AC three-phase. Digital display for real-time motor power and load percentage with trip setting capabilities.

Three delay timers for surge and short duration event filtering. Two output relays programmable for either over or under-load alarms. Key lock protected settings to avoid accidental changes. Suitable for motor load protection in pumps, fans, conveyors, and mechanical drives.

This high-performance motor load monitor is ideal for use in electrical automation, industrial motor control panels, HVAC systems, water treatment plants, manufacturing processes, and other industrial equipment monitoring applications. Choose Unipower for reliable and precise motor load monitoring solutions.

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