• Home
  • Blog
  • Replacing the SD85 with the S500-A60: An Alternative Solution

Replacing the SD85 with the S500-A60: An Alternative Solution

Written by
The MurCal Blogster
Published on
March 1, 2024 at 10:06:31 AM PST March 1, 2024 at 10:06:31 AM PSTst, March 1, 2024 at 10:06:31 AM PST

Murphy’s SD85 Solenoid Power Drive Time Delay was recently discontinued.  


But with a little engineering, the experts at MurCal were able to help our customers with a replacement.


The Trombetta’s S500-A60!


Here’s some instructions and images to make the transition as smooth as possible:


To replace an SD85 with the S500-A60, you'd wire the following way:


Terminal 1 on the SD85 is dual purpose. It wires to Battery - (Ground) and to the Ground terminal on the solenoid. With the S500-A60, there are separate terminals.

Terminal 2 on the SD85 is equivalent to the RED (Hold) terminal on the S500-A60. This is the low current output that stays on the entire time that the solenoid is pulled in.

Terminal 3 on the SD85 is equivalent to the AUX (+) "ON OR RUN SWITCH" terminal on the S500-A60. This is what tells it to pull in the solenoid.

Terminal 4 on the SD85 is equivalent to the WHITE (Pull) terminal on the S500-A60. This is the high current momentary output from the module that pulls the solenoid in.

Terminal 5 on the SD85 is equivalent to the BAT + terminal on the S500-A60. This is powered all the time.



See the Trombetta's S500-A60 in the store -->


-------------------

For Technical Support, Please Call Us At 661-272-4700, Contact Us Or Email Us At Sales@Murcal.Com

-----------------

Don't Miss a Thing!!! 🤩 

Subscribe to our newsletter, follow us on InstagramLinkedInTwitter/XFacebookTikTok & Threads to keep up to date with our latest News, Sales, Trends and more! Don't forget to check out our Blog archives for more expert informational content.

Behind The Scenes - Meet Jesus!

Q. How long have you been at MurCal? A. I’ve been working at Murcal for about a year now. Q. What is your position/role at MurCal? A. At Murcal, I work as a harness assembler, building and preparing electrical harnesses for heavy-duty equipment. My responsibilities include testing each harness for any malfunctions, braiding for durability, labeling for accurate identification, and coiling them for delivery. I take pride in ensuring every product meets our high-quality standards and is ready for reliable performance in the field.

Read More

Brand of the Month: SENS – Small but Mighty MicroGenius LE Battery Chargers

This month, we’re proud to feature SENS (Stored Energy Systems) as our Brand of the Month—a trusted name known for innovation, quality, and durability in battery charging solutions. At the heart of their lineup is the MicroGenius LE series, a compact yet powerful battery charger designed specifically for marine and genset applications.

Read More

Blink Marine PowerKey 1000 & 1400: The Ultimate in Rugged, Customizable Keypads

Looking for a keypad that’s as tough and smart as your application demands? Meet the PowerKey 1000 and PowerKey 1400 by Blink Marine—flagship models designed to deliver reliability, flexibility, and style for any vehicle, marine, or industrial control system.

Read More

PowerKey Pro Keypads by Blink Marine: The Ultimate Solution for Custom Control

The PowerKey Pro keypads are engineered to provide maximum flexibility for operators and system designers. Each keypad features keys with interchangeable inserts, allowing users to easily swap out icons to match specific operational requirements. This modular approach means that the same keypad can be adapted for a wide variety of applications, from industrial machinery to marine vessels.

Read More

Celebrating Excellence: A Conversation With Silvia Corradin

Celebrating Excellence at MurCal! This month, we’re thrilled to feature Silvia Corradin, our Employee of the Month, as voted by her peers. As an eCommerce/Marketing Manager, Silvia embodies MurCal’s values of innovation, quality, and teamwork. We’ll explore the contributions that make Silvia a standout member of our team.

Read More