The MTL 2211 Switch is an intrinsic safety (IS) interface device engineered to provide safe, controlled switching of low-energy field contact signals from Zone-classified areas. It prevents ignition risks by limiting the electrical energy delivered into hazardous atmospheres, ensuring compliance with global explosion-protection standards.

Designed for DIN-rail cabinet installation, the 2211 supports clean, reliable signal transmission to PLCs, DCS I/O, alarm systems, and shutdown logic modules. Its rugged construction and stable electronic design help maintain signal integrity in high-noise industrial environments.

Widely used across chemical process plants, oil & gas assets, pharmaceutical lines, and loading/tank-farm systems, the MTL 2211 is an OEM-grade interface solution for hazardous-area switching applications.

✅ Key Specifications

• Manufacturer: MTL / Eaton Crouse-Hinds

• Model: 2211

• Type: Intrinsic-safety switch interface

• Function: Contact switching, signal transfer

• Installation: DIN-rail mounting

• Application Zone: Hazardous-area field circuits

• Signal Compatibility: Dry contacts / low-energy switching

• Design: Energy-limiting ignition protection

(Exact electrical entity parameters vary by certification sheet and must be checked per loop design.)

🧪 Typical Applications

• Alarm input circuits

• Switch/limit contacts in Zone 0/1 areas

• Remote valve position feedback

• Level switch indication (floating, displacer, guided wave)

• Shutdown and interlock loops

• Fire & gas panel switching

• Instrument field junction boxes

💡 Benefits

• Safe contact switching in explosive atmospheres

• Supports both simple and complex IS loops

• Compact footprint saves control-panel space

• Reliable operation under vibration/noise

• Minimal maintenance requirements