FREE SHIPPING on orders over $100 for qualified items.
Click to call now

MidNite Solar MNSOB3R-4P-PSB Disconnect with installed Power Supply Board

MidNite Solar logo
MidNite Solar Disconnects:
  • High quality, US-made disconnect boxes and enclosures

Product Information

Model Part No. Amps Volts AC Volts DC Size & Weight Price
MidNite Solar MNSOB3R-4P-PSB Disconnect with installed Power Supply Board891015013.7 × 10.4 × 4.4 in
10 lbs
Free Shipping Icon
Do you have questions about our Midnite Solar disconnects, or questions about solar in general? Give us a call at 1-800-472-1142.


MNSOB3R-4P is a Disconnect switch. It has a 4 channel switch that breaks both the positive and negative of two isolated PV strings to a Transformer-less inverter. It has a combined rating of 600v and 20 amps as shipped. The switch is good for 100amps per side but the wire and terminal blocks limit it to 20 amps.

Back to Top

Features & Attributes

  • Dimensions (LxWxH): 13.7 × 10.4 × 4.4 inches
  • Weight: 10 lbs
  • Disconnect has built in shunt trip with positive feedback
  • Birdhouse compatible, includes Power Supply Board for rapid shutdown systems
  • Optional PV connected power supply
  • See thru deadfront
  • Type 3R aluminum enclosure (no rust, won’t turn to dust)
  • Load Break Rated
  • 90o C connections
  • Meets NEC 2011 and 2014 NEC 690.12
  • Warranty - 5 yrs.
  • Listed by ETL for US & Canada
  • Made in the USA
Back to Top


MidNite Solar MNSOB3R-4P-PSB Disconnect with installed Power Supply Board

Spec. Sheet
Installation Manual
Midnite Rapid Shutdown System
Back to Top

About MidNite Solar

Born in the USA

The design and manufacturing of MidNite Solar's products is done at company headquarters in Arlington, Washington, and all qualify as "Made in America". MidNite Solar specializes in renewable-energy-specific electrical components such as the Classic MPPT Charge Controller, a wide range of combiner and disconnect boxes, lightning arrestors and circuit breakers.
The engineers are constantly designing and building products to meet and exceed the ever-changing electrical codes. The new MidNite Solar Birdhouse Emergency Disconnect Switch is a great example, it satisfies future codes requiring system owners to install a disconnect switch that emergency personnel can quickly and easily operate.

Advanced Charge Controllers

The MPPT charge controllers produced by MidNite Solar incorporate some of the industry's most advanced features. The Classic MPPT Charge Controller is the first charge controller to include arc fault protection making it the safest available charge controller on the market. These versatile charge controllers can accept multiple types of DC inputs including solar, wind, hydro and other DC power sources. Available in a wide variety of sizes, there is sure to be a charge controller from MidNite Solar that will fit your system perfectly.

Back to Top
image of getting started guide
Download "Getting Started With Solar"
New to solar? Download our free guide to learn the basics and get started designing a system that’s right for you.