MTL4544 Eaton-MTL Repeater Power Supply 2-Channel 4-20mA HART

MTL4544 Eaton-MTL REPEATER POWER SUPPLY

The MTLx544 provides fully-floating dc supplies for energising two conventional 2-wire or 3-wire 4/20mA or HART transmitters located in a hazardous area, and repeats the current in other circuits to drive two safe-area loads. For smart transmitters, the unit allows bi-directional transmission of digital communication signals superimposed on the 4/20mA loop current. Alternatively, the MTLx544S acts as a current sink for a safe-area connection rather than driving a current into the load. Separately powered current sources, such as 4-wire transmitters, can be connected but will not support HART communication.

SPECIFICATION

Number of channels
Two
Location of transmitter
Zone 0, IIC, T4–6 hazardous area if suitably certified
Div. 1, Group A hazardous location
Safe-area output
Signal range: 4 to 20mA
Under/over-range: 0 to 24mA
Safe-area load resistance (MTLx 544)
@ 24mA: 0 to 360Ω
@ 20mA: 0 to 450Ω
Safe-area load (MTLx544S)
Current sink: 600Ω max.
Maximum voltage source: 24V dc
Safe-area circuit output resistance: > 1MΩ
Safe-area circuit ripple
< 50µA peak-to-peak
Hazardous-area input
Signal range: 0 to 24mA (including over-range)
Transmitter voltage: 16.5V at 20mA
Transfer accuracy at 20°C
Better than 15µA
Temperature drift
< 0.8µA/°C
Response time
Settles to within 10% of final value within 50µs
Communications supported
HART (terminals 1 & 2 and 4 & 5 only)

Related Models

Frequently Asked Questions (FAQ) – SC Automation Limited​​

​​1. Who is SC Automation Limited?​​

SC Automation Limited (SC) was established in 2010 with over ​​10+ years of industry experience​​ in automation instrumentation and industrial solutions.

​​2. Where does SC mainly distribute its products?​​

Our products are primarily exported to:

· ​​ Africa:​​ South Africa

· ​​ Asia:​​ Southeast Asia, Middle East

· ​​ Europe:​​ Nordic countries

· ​​ Americas:​​ South America

· ​​ Oceania:​​ Australia, New Zealand

​​3. What types of automation instruments does SC specialize in?​​

We focus on:

· ​​ Pressure Transmitters​​

· ​​ Flow Meters​​

· ​​ Ultrasonic Level Sensors​​

· ​​ Vibration Monitoring Systems​​

· ​​ Water Quality Analyzers​​

· ​​ Electric Actuators​​

· ​​ Solenoid Valves​​

· ​​ Sensors & More​​

​​4. Which brands does SC supply?​​

We provide ​​genuine new products​​ from leading brands, including but not limited to:
✅ ​​Bently Nevada​​ | ✅ ​​Endress+Hauser (E+H)​​ | ✅ ​​Pepperl+Fuchs (P+F)​​
✅ ​​MTL​​ | ✅ ​​Allen-Bradley (AB)​​ | ✅ ​​Rosemount (Emerson)​​
✅ ​​Yokogawa​​ | ✅ ​​AUMA​​ | ✅ ​​IFM​​ | ✅ ​​SMC​​ | ✅ ​​Festo​​
Need a specific brand? We can source it for you!

​​5. Are SC’s products 100% genuine and new?​​

​​Yes!​​ We only supply ​​original, brand-new​​ products with full manufacturer warranties.

​​6. Do SC’s products come with a warranty?​​

✅ ​​1-year warranty​​ for all products (except consumables like electrodes).

​​7. What delivery terms does SC accept?​​

· ​​ EXW (Ex-Works)​​

· ​​ CIF (Cost, Insurance & Freight)​​

​​8. What currencies are accepted for payment?​​

· ​​ USD​​ | ​​EUR​​ | ​​CNY (RMB)​​ | ​​HKD​​

​​9. What payment methods does SC support?​​

· ​​ T/T (Bank Transfer)​​

· ​​ Alipay​​ | ​​WeChat Pay​​

​​10. How can customers contact SC?​​

· ​​ WhatsApp:​​ +86-13715021826

· ​​WeChat:​​ +86-15012673027 / +86-15012630876

· ​​ Email:​​ joy@cc-scauto.com

​​11. What are SC’s working hours?​​

​​24/7 support!​​ We respond promptly to inquiries at any time.

​​12. What is SC’s company philosophy?​​

"Honesty in Relationships, Excellence in Work – Integrity First."

​​13. What shipping methods does SC support?​​

· ​​ Express Couriers:​​ DHL, UPS, TNT, FedEx

· ​​ Special Routes:​​ Russia & Pakistan dedicated lines

· ​​ Customer’s Own Logistics:​​ Share your partner’s details, and we’ll arrange pickup.

​​14. Where are goods delivered?​​

· ​​ Mainland China​​ or ​​Hong Kong​​ (brand-dependent).

​​15. Does SC support pre-shipment inspection?​​

✅ ​​Yes!​​ If you cannot visit, a trusted third party can inspect on your behalf.

​​16. What are SC’s payment terms?​​

· ​​ Full payment upfront​​ for orders delivered within ​​1 week​​.

· ​​ 30% deposit​​ for orders with ​​longer lead times​​.

​​17. Why choose SC Automation Limited?​​

✔ ​​100% genuine products​​ with reliable warranties
✔ ​​Fast quotations & technical support​​ (e.g., E+H product selection)
✔ ​​Year-round shipping​​ (excluding logistics holidays)
✔ ​​Hassle-free sourcing​​ – Your trusted one-stop automation supplier!

Need more details? Contact us anytime!​​
�� WhatsApp: ​​+86-13715021826​​ WeChat:15012673027 / 15012630876 | ✉ Email: ​​joy@cc-scauto.com​

SC Automation Limited