MTL Instruments MTL5053 H1 Fieldbus Barrier

MTL5053 Fieldbus Hazardous Area Isolator

The MTL5053 from MTL Instruments extends 31.25kbit/s H1 fieldbus networks into hazardous areas. This specialized interface provides both power and communication to fieldbus devices through signal conductors. Featuring an internal terminator and Fieldbus Foundation compliance, it offers a complete solution for industrial network expansion.

Key Technical Specifications

• Brand: MTL Instruments
• Model: MTL5053
• Product Type: Fieldbus Hazardous Area Isolator
• Data Rate: 31.25kbit/s (H1)
• Fieldbus Power: 80mA maximum current
• Supply Voltage: 20 to 35V DC
• Compliance: Fieldbus Foundation Type 133

Hazardous Area Certification

• Device Location: Zone 0, IIC, T4-T6 hazardous area
• The MTL5053 maintains intrinsic safety for fieldbus networks
• It enables safe operation of fieldbus devices in explosive atmospheres
• Comprehensive certification for hazardous area installation

Fieldbus Power Supply

• Output Voltage: 18.4V ±2%
• DC Impedance: 105Ω ±3%
• Maximum Current: 80mA for fieldbus devices
• Cable Length: Determined by intrinsic safety requirements
• Provides power through fieldbus signal conductors

Digital Signal Transmission

• Data Rate: 31.25kbit/s H1 fieldbus
• Compliance: Meets Fieldbus Foundation standards
• Internal Terminator: Switch-selectable on module top
• Ideal for installations with short safe-area bus lengths
• Maintains signal integrity in hazardous environments

Power Requirements

• Supply Voltage: 20 to 35V DC operating range
• Current Consumption: 135mA typical at 24V with 80mA load
• Power Dissipation: 2.3W typical at 24V
• Maximum Dissipation: 2.6W at 35V
• Status Indicator: Green LED for power monitoring

Installation Requirements

• Mounting: Horizontal DIN-rail on vertical surface recommended
• Spacing: 10mm between adjacent units
• Spacers: MTL MS010 spacers available for proper installation
• Temperature: Maximum 45°C for non-optimum orientation
• Adequate heat dissipation ensures reliable operation

Safety & Isolation

• Isolation: 250V AC between all circuits
• Safety Voltage: 22V maximum for terminals 1-2
• Internal Resistance: 102Ω
• Safety Current: 216mA maximum
• Maximum Voltage: Um = 250V rms or DC

Frequently Asked Questions

• What fieldbus standard does the MTL5053 support?
  It supports 31.25kbit/s H1 fieldbus and complies with Fieldbus Foundation Type 133 requirements.
• How much power can it provide to fieldbus devices?
  It delivers up to 80mA at 18.4V for fieldbus device power.
• Does it include termination capability?
  Yes, an internal terminator can be enabled via a switch on the module top.
• What are the mounting requirements?
  For optimal performance, mount on horizontal DIN-rail with 10mm spacing between units.