Eaton / MTL5500 DIN-Rail Isolators
Eaton MTL5544D Repeater Power Supply
Single-channel HART repeater power supply with two isolated safe-area 4-20 mA outputs.
Operating Functions
Dual-output transmitter interfacing
Transmitter power
The module supplies the connected 2- or 3-wire transmitter.
Two isolated outputs
One hazardous-area input is repeated to two safe-area 4-20 mA outputs.
HART path
HART communication is available through output channel 1.
Fast signal transfer
The official response specification is within 10% in 50 µs.
Product Overview
Power, isolation and dual safe-area retransmission
Eaton MTL5544D powers a 2- or 3-wire hazardous-area transmitter and transfers its 4-20 mA signal to two safe-area outputs. HART communication is supported on output channel 1.
Both output channels require a suitable load. The module provides galvanic isolation and is documented as SIL-capable.
Official Eaton MTL5544D repeater power supply connection diagram.
Product Specifications
Official identification and technical data
| Brand | Eaton |
|---|---|
| Model | MTL5544D |
| Channels | 1 input; 2 safe-area outputs |
| Transmitter types | 2- or 3-wire |
| Input signal | 0-24 mA |
| Transmitter supply | 16.5 V at 20 mA |
| Output signal | 4-20 mA; 0-24 mA overrange |
| HART communication | Output channel 1 |
| Load at 24 mA | 0-360 ohms |
| Load at 20 mA | 0-450 ohms |
| Transfer accuracy | Better than 15 µA |
| Temperature drift | Less than 0.8 µA/°C |
| Response time | Within 10% in 50 µs |
| Power supply | 20-35 Vdc |
| Maximum current consumption | 96 mA at 24 V |
| Power consumption | 1.4 W at 24 V |
| Indicator | Green power LED |
Installation Highlights
Output loading and intrinsic-safety wiring
Load both outputs
Eaton specifies that suitable loads are required on both output channels.
Check certified loop data
Use the official control drawing and entity parameters for the hazardous-area installation.
FAQ
Eaton MTL5544D technical questions
How many outputs does MTL5544D provide?
It provides two safe-area 4-20 mA outputs from one transmitter input.
Which output supports HART?
HART communication is supported on output channel 1.
Which transmitter types can it power?
The module supports 2- or 3-wire transmitters.
What supply voltage is required?
20-35 Vdc.
Do both outputs need loads?
Yes. Eaton specifies suitable loads on both output channels.
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