SKU: 89431365546

Newmar APS-70 Automatic Power Selector - 70A

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Description

Newmar APS-70 Automatic Power Selector - 70AAPS 70 Automatic Power Selector 70A The Automatic Power Selector (APS) is a solid state device that enables the installation of a seamless, redundant power system for critical electronic loads. It selects the higher voltage of two independent DC power sources and routes power to the load. Should one source falter or fail, the other will automatically supply the load with no transfer delay, and the operation continues uninterrupted. Two independent

APS-70 Automatic Power Selector - 70A

The Automatic Power Selector (APS) is a solid-state device that enables the installation of a seamless, redundant power system for critical electronic loads. It selects the higher voltage of two independent DC power sources and routes power to the load. Should one source falter or fail, the other will automatically supply the load with no transfer delay, and the operation continues uninterrupted.

Two independent power sources are wired to the APS and routed as a single output to the vital load. Alarm sense wires can be easily attached to input studs, providing a loss of power source signal. 

Features:

  • Easy installation
  • Rugged, rust-proof anodized aluminum case

Specifications:

  • Max Loads: 70 amps
  • Voltage Rating: 6 – 50 VDC, neg. ground
  • Stud Terminal Size: 6mm
  • Dimensions (inches): 3.25 x 4.5 x 3.1
  • Weight (lbs): 2

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SKU: 89431365546

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4.6 ★★★★★
Based on 26 reviews
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Verified Purchase
Gita Anjali
Massapequa, US
★★★★★ 5
great for beginners
Format: Paperback
simple to understand, good examples
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
A
Verified Purchase
Atiyah Ellerbee
Carnegie, US
★★★★★ 5
Great book!
Format: Paperback
Great book! I really like how the instructions are explained in the book and how it encourages you to both use the terminal / python interpreter and make files in vscode. This book can be used for intermediate python programmers and brand new programs. for the intermediate people, its a good refresher of the basics, and by the end you will definitely KNOW, KNOW them. I got this book in prep for new grad job applications, code assessments, game jams, and general practice. So I think you would do good to get this book at any level if you really want to get the basics down and know them!
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Reviewed in the United States on January 2, 2026
P
Verified Purchase
Pete
Fort Morgan, US
★★★★★ 5
One of the best Python books
Format: Paperback
I bought 5 Python books as I needed to learn the language quickly for an upcoming project. Of all the books that I purchased, I found this one to be the best. It starts out with the basics and works its way through more complicated areas. Each chapter builds well upon the other. There is very little redundancy, and I was able to get through the book in about a week. I have a background in software development, so this book was able to show me how Python implements different concepts that I already knew, but I think a beginner would also be comfortable with the material.
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Reviewed in the United States on March 22, 2026
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Verified Purchase
LinckG
Waukegan, US
★★★★★ 4
Easy to follow
Format: Paperback
Good book and easy to follow. Progression is well paced
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 6, 2026
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J.
Alexandria, US
★★★★★ 5
Honestly, I never thought I would enjoy studying this much!
Format: Paperback, Format: Paperback
I was so grateful for this book's excellence that I opened the Amazon website during my break to write a review. I wanted to brush up on my skills before taking my first Python class in the fall, so I was looking for a beginner's book I could study on my own over the summer. Since I had no coding experience, I needed a book that explained even the smallest details step-by-step. I've been studying with the goal of completing two chapters a week since August. I'm currently on Chapter 8, and it's been so much fun! Honestly, I never thought I would enjoy studying this much. I spent two days on practice problem 8-8 (though I spent most of the time lying on the couch screaming, "Why can't I do this?" than actually solving the problem). However, after some time, I reconsidered and re-tested the problem, and today, on the third day, I finally figured out what the issue was! I resisted the urge to ask AI or look at the GitHub code the author had posted. Instead, I solely relied on the book to solve the problem. The information in the book was more than enough. I'm proud of myself! If you're a beginner like me and just starting out with Python, I highly recommend this book! It seems unlikely I'll be able to finish all the remaining chapters and projects before the fall semester, but I'd like to take the time over the weekend to finish this book if possible. I have no doubt that the detailed, helpful explanations and systematic practice problems will help me solidify my fundamental Python coding skills.
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Reviewed in the United States on August 29, 2025

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