Isolating Driver 4 20mA with Line Fault Detection - Honeywell MTL4045C
Need More Details?
If you’d like to check stock availability, request the latest price, or view more product images, simply click the "Request for Price" button and our team will assist you promptly.

The Isolating Driver 4–20 mA with Line Fault Detection Honeywell MTL4045C is a high‑performance signal conditioning module engineered to provide dependable isolation, accurate current loop drive, and advanced line fault detection for 4–20 mA process control loops. Designed for industrial automation, process instrumentation, and hazardous area systems, this isolating driver enhances signal integrity by protecting against ground loops, electrical noise, and line faults while ensuring precise transmission of sensor data to PLCs, DCS units, and control equipment. Built to Honeywell’s rigorous quality standards, the MTL4045C delivers robust operation and improved system reliability in demanding environments.
Key Features
-
Galvanically isolates 4–20 mA current loops to protect control and measurement systems
-
Integrated line fault detection enhances system diagnostics and safety
-
Improves signal integrity by reducing noise and ground loop interference
-
Designed for seamless integration with PLC, DCS, and process instrumentation
-
Robust construction for reliable performance in challenging industrial conditions
Specifications
-
Model: MTL4045C
-
Product: Isolating Driver 4–20 mA with Line Fault Detection
-
Brand: Honeywell
-
Function: Signal isolation, current loop drive, and line fault detection
-
Application: Industrial automation, process control, hazardous area interfaces
-
Input/Output: Isolated 4–20 mA loop interface with fault monitoring
-
Compatibility: Works with PLC/DCS, analog input modules, and instrumentation
-
Environment: Industrial and process control systems
The Isolating Driver 4–20 mA with Line Fault Detection Honeywell MTL4045C delivers dependable loop isolation, enhanced fault protection, and accurate signal performance for critical automation applications. With Honeywell’s reputation for quality and industrial innovation, this isolating driver is an excellent choice for ensuring reliable, noise‑free 4–20 mA signal transmission in demanding environments.
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.