Veris Industries H-540 Current Switch

The Veris Industries H-540 (identical to the Veris H540) is a heavy-duty current monitor relay designed for the precise supervision of fractional horsepower motors. As a core component of the Hawkeye 5xx series, this SPST current sensing switch integrates a load-switching relay, a fixed trip current sensor, and a manual Hand-Off-Auto (HOA) switch into a single remote-mounted enclosure. This consolidated design eliminates the need for multiple separate devices, simplifying the control of exhaust fans, unit ventilators, and recirculating pumps in complex Building Automation Systems (BAS).

Engineered for professional performance, the H-540 Hawkeye features a solid-state status output rated for 1A at 30VAC/DC and a mechanical command relay capable of handling 1 HP at 120VAC. The induced power design ensures the sensor operates directly from the monitored conductor, while the adjustable jumper allows for field-selectable Normally Open (N.O.) or Normally Closed (N.C.) relay operation. Designed for 4x4 junction box mounting, the housing provides clear physical separation between control and high-voltage wiring, facilitating safer HVAC motor troubleshooting and localized manual override during commissioning.

• Streamlined Installation: Housing combines status sensing, command relay, and HOA override in a single footprint to reduce wiring labor and enclosure congestion.
• Independent Manual Control: The integrated HOA switch allows technicians to bypass control logic for rapid motor testing and maintenance.
• Versatile Compatibility: Field-selectable SPST relay contacts (N.O./N.C.) accommodate diverse control circuit requirements.
• Self-Powered Operation: Current status sensor is powered by induction, requiring no external power supply for the sensing side.
• Technical Reliability: Rated for loads from 0.25 to 15A with rugged construction suitable for industrial 50/60 Hz environments.

• What is the difference between the H-540 and H540? They are the exact same model; the hyphenation is simply a variation in manufacturer labeling.
• Can I use this for belt loss detection? The H-540 has a fixed trip point at 0.25A for basic on/off status. For precise belt loss detection on larger loads, the adjustable H-548 model is typically preferred.
• How is the unit powered? The current sensor is self-powered via induction from the monitored wire, while the relay coil requires a 24 VAC/DC signal from your controller.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.