The MTL 122 intrinsic safety (IS) barrier is engineered to protect field-mounted instruments located in hazardous classified zones by restricting voltage and current to safe levels. This prevents potential ignition sources—such as sparking or hot-surface conditions—from occurring in explosive gas atmospheres.

Designed for DIN-rail mounting, the MTL 122 integrates easily into panel layouts and instrumentation racks, supporting clean, dependable signal transmission back to PLC, DCS, and alarm systems. Its rugged internal circuitry enhances noise immunity, making it ideal for electrically harsh industrial environments.

Suitable for simple contact devices, switches, and low-power analog signals, the MTL 122 is widely used in oil & gas processing, petrochemical units, tank farms, and industrial automation areas requiring certified intrinsic-safety compliance.

✅ Key Specifications

• Manufacturer: MTL / Eaton Crouse-Hinds

• Model: 122

• Function: Intrinsic safety barrier

• Protection: Limits field loop voltage/current

• Mounting: DIN rail

• Application: Hazardous-area instrumentation wiring

• Signal Types: Low-power analog and dry-contact circuits

• Compliance: Suitable for IS loops in explosive gas zones

(Exact entity parameters must be confirmed per hazardous-area control design.)

🧪 Typical Applications

• Low-power transmitters

• Field-mounted limit and alarm switches

• Valve status feedback

• Tank gauging probe signals

• Shutdown/contact loops

• Fire & gas indicator contacts

💡 Benefits

• Enables safe instrument operation in hazardous atmospheres

• Compact footprint for control-cabinet integration

• Minimizes panel wiring complexity

• Provides reliable isolation and signal stability

• Industrial-grade long-life design

• Reduces certification burden for field devices