Thermocouple RTD Isolator | MTL Brand MTL4760AC

MTL4760ac Twin 2-Channel AC Barrier for THC & RTD Applications

The MTL4760ac delivers advanced signal protection for temperature measurement in hazardous locations. This innovative barrier provides four isolated channels in a compact twin-pair configuration. It handles thermocouple and RTD signals with optimal performance and safety. The unit carries full FM and BASEEFA/IIC certification for explosive environments.

Core Technical Specifications

• The barrier provides four total channels in two twin-channel pairs.
• It maintains 9V maximum voltage rating with 7.6V working voltage.
• The unit delivers 120mA current capacity with 50mA fuse protection.
• It features low end-to-end resistance of 95Ω typical.
• Each channel handles 0.27W power for efficient operation.
• The device processes AC signals only for THC and RTD applications.

Cable Parameter Specifications

• BASEEFA IIC Group: 4.5µF max capacitance, 0.65-9.8mH inductance
• FM A/B Groups: 0.46-5.28µF max capacitance, 0.11-0.7mH inductance
• The L/R ratio ranges from 44.4 to 260 µH/Ω for IIC applications
• These parameters ensure safe installation with various cable types

Key Features & Advantages

• The dual-channel design saves valuable panel space in cabinets.
• It operates with no bussed power requirements for simplicity.
• The barrier carries both FM and BASEEFA/IIC safety certifications.
• It is optimized for 4-wire RTD accuracy in precision applications.
• Each channel has 50mA fuse protection for circuit safety.

Typical Applications

• Ideal for thermocouple isolation in process heating systems.
• Perfect for 4-wire RTD temperature sensor applications.
• Essential for low-level AC signal conditioning circuits.
• Reliable for process control systems requiring temperature monitoring.

Compliance & Environmental

• The barrier is certified for Group IIC hazardous areas operation.
• It carries ATEX and IECEx certification for international use.
• The unit operates across -20°C to +60°C temperature range.
• It meets stringent safety standards for explosive atmospheres.

Installation & Operation

• The compact design allows high-density panel mounting.
• It provides individual channel isolation for signal integrity.
• The barrier requires standard DIN rail mounting procedures.
• It ensures safe operation in Division 1 and Zone 0 areas.

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