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The Eaton MTL7741 Crouse-Hinds series Zener barrier delivers intrinsically safe circuit protection for proximity sensors and switches operating in Zone 0, Zone 2, and Class I, Division 2 hazardous locations. Engineered with built-in overvoltage protection and relay outputs, it provides reliable signal interfacing and process safety across oil, gas, and petrochemical facilities.
| Country of Origin | India (IN) |
| ATEX Rating | Zone 0 (Field); Zone 2 |
| Hazardous Area Rating | Class I, Division 2; Class I, Zone 2. |
The Eaton MTL7741 is an intrinsically safe shunt-diode Zener barrier engineered to deliver critical explosion protection in hazardous industrial process control environments. Designed for proximity sensors and switch inputs with relay outputs, it prevents ignition-capable electrical energy from reaching Zone 0, Zone 2, and Class I, Division 2 classified areas.
Built for industrial control cabinets, the MTL7741 features a compact 12.6 mm polycarbonate housing with standard DIN-rail mounting and integrated overvoltage protection. Operating across a wide 22.9 to 30 Vdc supply range with a 26 mA switching current, it ensures stable switching and signal isolation between field instruments and safe-area control systems.
✅ ATEX, IECEx, and NEC/CEC certified for hazardous location safety
✅ 1-Channel interface designed for switch or proximity sensor inputs with relay output
✅ IP20 touch-proof polycarbonate housing designed for control cabinet integration
✅ Built-in overvoltage protection for enhanced operational uptime and system reliability
✅ DIN-rail mounting method for fast, organized installation
✅ Rated DC operating voltage range of 22.9–30 Vdc with 26 mA switching current
✅ Certified for connection into Zone 0 field instrumentation
✅ Wide operating temperature range of -20°C to +60°C
✅ Compact, slim 12.6 mm width to optimize enclosure packing density
🔹 Standard Unit: Eaton MTL7741 Single Channel Barrier (Catalog No. MTL7741)
🔹 Multi-Pack / Bulk Ordering: Packaged quantities for multi-loop DIN-rail projects
🔹 Turnkey Enclosure Kit: Pre-assembled DIN-rail barrier kits in certified hazardous-area enclosures
🔹 Accessory Options: DIN-rail grounding strips, busbar mounting blocks, and tagging accessories
| Feature | Details |
|---|---|
| Product Series | Eaton Crouse-Hinds series MTL7700 |
| Catalog Number | MTL7741 |
| EAN Code | 3066227675736 |
| Product Function | Zener barrier for proximity sensor/switch input with relay output |
| Number of Channels | 1 |
| Rated Supply Voltage (DC) | 22.9 – 30 Vdc |
| Switching Current | 26 mA |
| Special Protection Features | Built-in overvoltage protection |
| Mounting Method | DIN rail |
| Housing Material | Polycarbonate |
| Ingress Protection Rating | IP20 |
| NEC/CEC Hazardous Area Rating | Class I, Division 2; Class I, Zone 2 |
| IECEx/ATEX Hazardous Area Rating | Zone 0 (Field); Zone 2 |
| Compliant Standards | IECEx, ATEX, IEC, NEC, CEC |
| Operating Temperature (Min / Max) | -20°C to +60°C |
| Dimensions (L x W x H) | 105 mm x 12.6 mm x 90 mm |
| Product Weight | 140 g |
🔗 NEC/CEC Hazardous Rating – Class I, Division 2; Class I, Zone 2
🔗 IECEx/ATEX Hazardous Rating – Zone 0 (Field), Zone 2 (Safe/Cabinet Mount)
🔗 Standards Compliance – IEC, IECEx, ATEX, NEC, CEC certified
🔗 Ingress Protection – IP20 rated for cabinet DIN-rail environments
🔗 Download Datasheet
🔹 Oil & Gas
🔹 Chemical Plants
🔹 Mining
🔹 Labs
🔹 Manufacturing
📦 1x Eaton MTL7741 Zener Barrier Unit
📦 1x Removable Terminal Block Assembly
📦 1x DIN-Rail Grounding Connection Foot
📦 1x Channel Identification Marker
📦 1x MTL7700 ATEX Safety Instructions Guide
📦 1x Quick-Start Installation Sheet
📦 1x Manufacturer Certificate of Conformance
📦 Lead Time: 4 - 6 weeks
📍 Shipping Terms: Worldwide / Expedited Options
💳 Payment Options: Credit Card, PayPal, Net 30 Terms
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What field devices can be connected to the Eaton MTL7741?
The MTL7741 is designed for intrinsically safe connections to switch inputs or proximity sensors installed in classified areas, outputting to a safe-area relay circuit.
What hazardous areas can the field instrumentation reside in?
Field sensors and switches can be located in Zone 0, Zone 2, and Class I, Division 2 classified hazardous environments.
What are the power requirements for the MTL7741 barrier?
The unit operates on a DC power supply with a rated supply voltage range of 22.9 to 30 Vdc and a switching current of 26 mA.
How is the unit mounted inside the cabinet?
The MTL7741 mounts directly onto standard 35 mm DIN rails, providing easy grounding and fast installation.
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