The MTL 325 intrinsic safety (IS) barrier provides certified energy-limiting protection for field instrumentation installed in hazardous industrial zones. By restricting electrical power delivered to field wiring, the barrier prevents ignition sources such as sparks, excessive heating, and short-circuit energy release.

Engineered for reliable signal transfer, the MTL 325 supports low-power analog instrumentation loops, switches, and digital contact signals. With durable internal galvanic control components, it ensures stable, noise-free transmission back to the control room while maintaining safety compliance with global standards.

Designed for compact DIN-rail mounting, the unit integrates easily into control cabinets, analyzer shelters, and SIS environments. It is commonly used in petrochemical, refining, chemical, tank-farm, and offshore process facilities.

✅ Key Features

• Manufacturer: MTL / Eaton Crouse-Hinds

• Model: 325

• Function: Intrinsic safety barrier

• Protection: Limits hazardous energy (voltage/current)

• Mounting: DIN-rail or panel track

• Loop Type: Analog instruments, switches, contacts

• Application Zones: Gas Group hazardous areas (Zone 0/1 systems)

• Interface: Safe-area connection to control systems

(Note: performance and entity parameters vary by loop configuration and hazardous-area compliance sheets.)

🧪 Typical Applications

• Pressure / level / temperature transmitters

• Valve position feedback contacts

• Alarm & shutdown circuits

• Fire & gas loop interfaces

• Tank gauging systems

• Remote I/O safety inputs

💡 Benefits

• Enables safe sensor operation in explosive zones

• Stable, low-noise signal transfer

• Compact profile reduces cabinet footprint

• Proven reliability and long lifecycle

• Simplifies IS loop certification

• Maintenance-free solid-state design