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The Sensitron SMART 3G-C3 is a compact, intelligent electronic fuse holder designed for reliable protection of electrical circuits in demanding industrial environments. It is specifically engineered for use with gas detectors intended for Zone 2, Category 3 areas, enabling monitoring of toxic, flammable, and refrigerant gas concentrations in classified hazardous locations. Ideal for light industrial environments, the SMART 3G-C3 features manual calibration via the STS/CKD+ calibration keypad. It reliably monitors flammable gases (% LFL), toxic gases and refrigerants in ppm, as well as oxygen and CO₂ levels in % volume. Thanks to its modular design and built-in communication capabilities, the SMART 3G-C3 enables easy monitoring and management via digital interfaces. The fuse holder is resistant to high temperatures and vibrations and requires minimal maintenance. It is ideal for applications where safety, efficiency, and real-time status monitoring are crucial.