Carlo Gavazzi Automation Introduces CF/CS30 ATEX Series Electromechanical Relays for Hazardous Envir

Carlo Gavazzi Automation has expanded its portfolio with the launch of the CF/CS30 ATEX Series, a new line of electromechanical power relays engineered specifically for use in environments where flammable liquids, vapors, and dusts pose significant safety risks. These relays are designed to meet stringent international standards for hazardous zones, ensuring reliable operation without compromising worker safety or process integrity.

Addressing Critical Safety Challenges in Explosive Atmospheres

In industries such as chemical processing, oil and gas, refrigeration, and industrial cooling, the presence of flammable substances creates a need for automation components that eliminate ignition risks. Standard electromechanical relays can generate electrical arcs during state transitions (e.g., switching from open to closed), which—while harmless in everyday settings—can trigger catastrophic explosions in hazardous environments.

The CF/CS30 ATEX Series mitigates this risk through advanced design features, including high-performance insulation (4 kV / 8 mm) and arc-resistant construction, ensuring safe operation even in areas with volatile concentrations of flammable materials.

Key Features of the CF/CS30 ATEX Series

ATEX Certification & Global Compliance:

The relays are certified to ATEX (TÜV) standards for use in explosive atmospheres, alongside CE, UL508, and NWFR (UL) approvals. They also pass the Glow Wire Test (GWT 750℃), demonstrating resistance to fire hazards caused by overheated components.

Versatile Configurations:

Available in two styles—CF Fast-on for quick connections and CS soldered for PCB mounting—the series supports a wide voltage range (6 VDC–48 VDC and 24 VAC–277 VAC) and trips at 30 A for high-power applications.

Dual Contact Options:

Each relay offers two changeover contacts (DPDT) and two normally open contacts (DPST), enabling flexible integration into control systems for tasks like pump cycling, compressor actuation, and valve operation.

Robust Design for Harsh Conditions:

Built to withstand industrial vibrations, temperature extremes, and corrosive environments, the relays ensure long-term reliability in demanding settings.

Targeted Applications for Enhanced Safety

The CF/CS30 ATEX Series is ideal for:

Refrigeration Systems: Safe control of pumps and compressors in coolant loops using flammable refrigerants such as R290 (propane), R717 (ammonia), or ethylene glycol-based solutions.

Chemical & Petrochemical Plants: Automation of processes involving volatile liquids or dusts.

Industrial Heat Exchangers: Reliable switching in systems where temperature regulation relies on flammable coolants.

“These relays represent a breakthrough in balancing performance and safety,” According to Carlo Gavazzi,. “By meeting ATEX and other global standards, we’re enabling industries to adopt automation with confidence, even in the most hazardous zones.”