MidNite Solar Four-Pole Disconnect Switch With Power Supply Board 600V

Product description


MNSOB3R-4P-PSB 4 Pole 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
With Power Supply board (MNDISCOPSB) factory installed for Plug and Play compatibility with the MidNite Solar Birdhouse Rapid System Shut Down Controller.

SKU MNSOB3R-4P-PSB Categories ,

Out of stock



  • The MNSOB3R-4P’s red handled is LOCKABLE IN THE OFF POSITION!
  • Disconnect has built in shunt trip with positive feedback
  • Birdhouse compatible
  • Optional PV connected power supply
  • See thru deadfront
  • Type 3R aluminum enclosure (no rust, won’t turn to dust)
  • Load Break Rated
  • Customer connections are #10 wire max on the regular version and #4 wire max on the 75 amp version
  • 90° C connections
  • Meets NEC 2011 and 2014 NEC 690.12
  • Warranty – 5 yrs.
  • Listed by ETL for US & Canada
  • Made in the USA
  • Dimensions: 13.7″L x 10.4″W x 4.4″D
  • Weight: 10lbs


Midnite Solar

Midnite Solar is a US-based manufacturer of advanced solar charge controllers, inverters, and other power electronics, designed to optimize and manage solar energy systems. The company is based in Arlington, Washington, and has been providing high-quality solar products for more than 20 years. Midnite Solar's product line includes a range of charge controllers and inverters that are designed to work seamlessly with solar panels, batteries, and other components, providing customers with a reliable and efficient source of solar power. With a focus on innovation and sustainability, Midnite Solar's products are built to withstand harsh environments and deliver exceptional performance, making them a top choice for residential, commercial, and industrial solar applications.