Precision-engineered Intrinsic Safety Signal Isolator
The MTL 5041 is a cutting-edge industrial automation component designed to ensure reliable signal transmission in hazardous environments. As a dual-channel intrinsic safety isolator, it bridges 4-20 mA signals between explosive zones and safe areas with unparalleled accuracy. Its advanced galvanic isolation technology maintains 250 V rms isolation between input, output, and power terminals, while supporting HART communication for smart transmitter integration. The device’s precision is evident in its ±5 µA typical conversion accuracy at 20°C, combined with a rapid 250 µs response time to handle dynamic process changes. With a wide operating temperature range of -20°C to 60°C and <1 µA/°C temperature drift, it excels in extreme industrial conditions. The compact 35 mm DIN rail mount design facilitates easy installation, while LED indicators provide real-time power status monitoring. Unlike traditional Zener barriers, the MTL 5041 eliminates grounding requirements, streamlining maintenance and reducing downtime.
Certified Ruggedness for Critical Operations
Built to withstand the harshest industrial settings, the MTL 5041 boasts comprehensive safety certifications, including ATEX, IECEx, and UL listings for Class I, Zone 2 hazardous areas. Its intrinsic safety parameters (28 V, 300 Ω, 93 mA) ensure compliance with global explosion protection standards, making it ideal for oil & gas, chemical processing, and pharmaceutical industries. The device’s robust construction includes a reinforced housing capable of withstanding 5-95% humidity and vibrations, while its 110g lightweight design doesn’t compromise durability. Unique to MTL’s engineering, the 5041 integrates a fail-safe mechanism that maintains signal integrity even during power fluctuations, a feature absent in many competitor models. Its low power consumption (1.2 W at 24 VDC) aligns with energy-efficient practices, while the isolated power supply design prevents ground loops—a common issue in legacy systems.
Versatile Integration for Modern Industrial Networks
The MTL 5041 redefines flexibility in process automation. Its floating output design supports up to 1kΩ load resistance, enabling seamless integration with PLCs, DCS systems, and HMIs. The isolator’s compatibility with MTL’s 5000 series modules (e.g., 637, 638) allows scalable system configurations for multi-channel applications. For HART-enabled setups, the 5041 acts as a passive repeater, ensuring uninterrupted bidirectional communication without additional signal boosters. Installers benefit from its plug-and-play terminals that accommodate 2.5 mm² wires, reducing wiring complexity. Unlike similar products that require external power for HART signals, the MTL 5041 draws power directly from the loop, simplifying field installations. This versatility, combined with its 10-year operational lifespan and modular design, positions the 5041 as a future-proof solution for Industry 4.0-ready plants.
Attribute | Specification |
Model | MTL 5041 |
Type | Repeater Power Supply for 2-wire transmitters in hazardous areas36. |
Manufacturer | Measurement Technology Ltd. (MTL) / Eaton (legacy product)38. |
Applications | Oil & gas, chemical processing, pharmaceutical industries; Class I, Zone 2 hazardous areas34. |
Signal Type | 4-20 mA with HART communication support34. |
Channels | Single-channel3. |
Isolation | 250 V rms between input, output, and power terminals34. |
Accuracy | ±5 µA typical at 20°C4. |
Response Time | <250 µs to settle within 10% of final value4. |
Certifications | ATEX, IECEx (Ex ia IIC -20°C ≤ Ta ≤ +60°C), UL (Class I, Div. 2), CSA, FM, CE346. |
Intrinsic Safety Parameters | Uo = 28 V, Io = 93 mA, Po = 0.65 W, Um = 250 V36. |
Temperature Range | -20°C to +60°C (operating); -40°C to +80°C (storage)34. |
Humidity | 5-95% RH non-condensing4. |
Dimensions | 0.3" x 4.0" x 4.5" (0.6 cm x 10.2 cm x 11.4 cm)5. |
Weight | 110 g36. |
Mounting | 35 mm DIN rail (EN 50022) with plug-in terminals48. |
Power Requirements | 20-35 VDC input; draws power from the loop for HART communication34. |
Power Consumption | 1.2 W at 24 VDC4. |
Output Load | 0-1 kΩ in safe area4. |
HART Compatibility | Passive repeater for bidirectional communication without external power49. |
Terminals | Plug-and-play terminals for 2.5 mm² wires49. |
Warranty | 12 months1213. |
Unique Features | Fail-safe mechanism maintains signal integrity during power fluctuations; floating output design eliminates ground loops49. |
Environmental Resistance | Withstands vibrations and 5-95% humidity; reinforced housing for harsh conditions34. |
Compliance | Meets IEC 61508 standards for functional safety; compatible with MTL 5000 series modules810. |
Documentation | MTL 5000 Series Instruction Manual (INM5000) for installation and maintenance810. |
Replacement | Superseded by MTL5500 series modules for new applications, but still supported for legacy systems |
Packaging & Shipping

Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.
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