Carlo Gavazzi DPA 3-Phase HVAC Monitoring Relays
Carlo Gavazzi DPA 3-Phase HVAC Monitoring Relays are specially designed for HVAC systems using low-GWP refrigerants. These relays help protect compressors, enable sustainability, and ensure compliance as manufacturers phase out and replace high-GWP HFCs with next-generation refrigerants such as R-32, R-1234yf, and R-290. While these alternatives support climate goals, they also have a higher ignition risk and require strict compliance with IEC/EN 60335-2-40 and UL 60335-2-40 safety standards. Carlo Gavazzi DPA 3-Phase HVAC Monitoring Relays provide a reliable and certified solution, operating completely spark-free while meeting the ignition-free requirements for A2L and A3 refrigerants. The DPA HVAC relays provide continuous phase-sequence and phase-loss monitoring to ensure compressors remain protected from main-grid failures. Ideal applications include commercial and industrial heat pumps, chillers, and rooftop units.
Features
- Sealed relay output
- Enhanced safety in flammable refrigerant environments
- Spark-free technology to eliminate ignition risk
- Fully compliant with IEC/EN/UL 60335-2-40 bubble tests
- Ensures ignition-free operation in A2L/A3 systems
- Full compliance with international standards
- Meets latest UL and IEC requirements
- Helps OEMs achieve certification without expensive redesigns
- Reliable HVAC compressor protection
- Continuous monitoring of phase sequence and phase loss
- Disconnects power in case of anomalies to avoid costly failures and downtime
- Upgrade-ready solution allows easy upgrades to existing systems with minimal redesign
Applications
- Commercial and industrial heat pumps
- Chillers
- Rooftop units
Specifications
- Regenerated voltage detection
- Wide voltage range from 208VAC to 690VAC
- 17.5mm or 22.5mm DIN-rail housing
- Harmonic immunity
Related Relays
Carlo Gavazzi DPA & PPA 3-Phase Industrial Monitoring Relays
Designed to detect incorrect phase sequence and total/partial phase loss.