SOB Manual

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MNSOB Shut Off Box Instructions

The MNSOB Shut off boxes provide a Rapid System Shutdown as required by NEC 690.12.

This Manual covers the following models:

Application:

 Rapid System Shutdown

Features:

 Outdoor enclosures available in Type 3R and Type 4X

 Powder coated aluminum construction stands up to the elements

 Type 4X units are waterproof to two Meters depth in any orientation

 Big Red Handle makes for easy to understand operation

 Clear Deadfront provides safety and a look inside

 Additional remote disconnects can be added.

 Compatible with the Birdhouse 1 for remote disconnect and other features (sold separately)

 Meets and exceeds NEC 2011 requirements

 MNSOB4X-2P

 MNSOB4X-4P

MNSOB4X-4P

 MNSOB3R-2P

 MNSOB3R-4P

MNSOB3R-4P

Summary of content (15 pages)

PAGE 1
MNSOB Shut Off Box Instructions MNSOB4X-4P MNSOB3R-4P The MNSOB Shut off boxes provide a Rapid System Shutdown as required by NEC 690.12.
PAGE 2
MNSOB Shut Off Box Instructions (continued) IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS - These instructions contain important safety and operating instructions for the MidNite Solar MNSOB Shut Off Boxes. If you do not fully understand any of the concepts, terminology, or hazards outlined in these instructions, please refer installation to a qualified dealer, electrician or installer. These instructions are not meant to be a complete explanation of a renewable energy system.
PAGE 3
MNSOB Shut Off Box Instructions (continued) Table of Contents Introduction ............................................................................................................................................. 4 Installation ................................................................................................................................................ 4 Optional accessories................................................................................................................
PAGE 4
MNSOB Shut Off Box Instructions (continued) Introduction The MNSOB series of Rapid Shutdown boxes are designed for indoor / outdoor use. Type 4X have been tested to be watertight to 2 meters underwater, so they are sure to be watertight above sea level.
PAGE 5
MNSOB Shut Off Box Instructions (continued) Enclosure Notes: In order to ensure water-tightness on Type 4X units and rain-tightness on the Type 3R units it is important to install connectors or hole plugs into every opening. Silicone sealant can be used to plug all openings on Type 3R units except for the two 1/8” drain holes on the bottom. On Type 4X units two 1/8” drain holes can be placed at the lowest point on the enclosure.
PAGE 6
MNSOB Shut Off Box Instructions (continued) Optional Accessories MNBirdhouse 1 • Located at ground level, the Birdhouse 1 provides a safe means to disconnect high voltage PV arrays from MidNite Disconnecting and Arc Fault combiners or Shut Off Box • Hard wired connection gives positive feedback that the Disconnect on the roof has actually been thrown.
PAGE 7
MNSOB Shut Off Box Instructions (continued) Installing the MNDiscoPSB Power Supply PCB: You will need: 3/16” Slotted screwdriver, #1 Phillips screwdriver, Wire strippers, ¼” nutdriver and a wire crimper to attach lugs. Included in the MNDiscoPSB Kit. Parts included with MNDiscoPSB kit.
PAGE 8
MNSOB Shut Off Box Instructions (continued) Installing the MNDiscoPSB Power Supply PCB: Continued Step 1: Remove the top cover and deadfront (Page 3). Step 2: Remove plastic supports (2) by removing screws from the back side of the Shut Off Box. Set aside to reinstall later. Step 3: Place the Formex insulator as shown. Step 4: Install metal standoffs (2) and Reinstall plastic PCB supports removed in Step 1 (2).
PAGE 9
MNSOB Shut Off Box Instructions (continued) Installing the MNDiscoPSB Power Supply PCB: Continued Note: Circuit board is shown without non-removable clear cover. Step 5A: Set board in place as shown. Step 5B: Secure board with 6-32 screws (2). Loosen wire bundle from switch Trim wires to 5” and strip ¼” Step 6: Connect the two black wires to The left side of the terminal block marked “BK1” and “BK2”. Connect the two red wires to the right side of the terminal block marked “S1” and “S2”.
PAGE 10
MNSOB Shut Off Box Instructions (continued) Installing the MNDiscoPSB Power Supply PCB: Continued Step 7: Strip one end on the red and white wires included in the kit ¼” and connect them as shown with the red wire on the left side of the terminal block marked “PV+” and the white wire on the right side marked “PV-“. Route the wires downward under the large switch. Step 8: Verify your work, then replace deadfront and top cover.
PAGE 11
MNSOB Shut Off Box Instructions (continued) Wiring Diagrams Terminal blocks on all MNSOB models: Strip length 0.35” (9 mm) Tightening torque, min 5.3 Oz-In (0.6 Nm) Tightening torque max 7 Oz-In (0.
PAGE 12
MNSOB Shut Off Box Instructions (continued) 2 Channel SOB provides two 600V positive MPPT Channels 4 Channel SOB provides two 600V Transformerless MPPT Channels 12 | P a g e 10-283-1 REV:P5
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MNSOB Shut Off Box Instructions (continued) Appendix A MNSOB3R MNSOB3R Bottom and side knockout location and size No Scale 13 | P a g e 10-283-1 REV:P5
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MNSOB Shut Off Box Instructions (continued) MNSOB4X MNSOB4X Bottom and side knockout location and size No Scale 14 | P a g e 10-283-1 REV:P5
PAGE 15
MNSOB Shut Off Box Instructions (continued) MIDNITE SOLAR INC. LIMITED WARRANTY MidNite Solar Power electronics, sheet metal enclosures and accessories MidNite Solar Inc. warrants to the original customer that its products shall be free from defects in materials and workmanship. This warranty will be valid for a period of five (5) years for all products except the MNKID Charge Controller which will be two (2) years.