MidNite Solar 24-48VDC  MNBDM Battery Disconnect Module Controller

The MidNite Solar Battery Disconnect Module (MNBDM) is a crucial safety accessory designed to enable a complete emergency shutdown of your battery system with a single push of a button.

Working seamlessly with MidNite's Bird House and disconnecting combiners, the MNBDM provides an integrated solution for rapid system shutdown, enhancing safety and control in your solar power installation. It is an optional circuit board that can be installed in most MidNite Solar E-Panels.

Key Benefits

Rapid Emergency Shutdown: Provides a complete emergency system shut down by disconnecting the main batteries from the system.

Integrated System Compatibility: Designed to work in conjunction with the MidNite Bird House (MNBH) and disconnecting combiners to provide a complete Emergency System shut down with the single push of a button.

Multi-System Scalability: Supports multiple Combiners, Bird Houses, and Battery Disconnect Modules on a single system.

Voltage System Compatibility: Works with 24V and 48V battery systems.

Remote Trip Circuit Breaker Interface: Interfaces with any of MidNite's remote trip circuit breakers.

Standard CAT5 Communication: The system uses standard CAT5 cable between devices. A 600 volt Listed CAT5 cable is also offered.

Fail-Safe Feature: If you attempt to close the breaker without the MNBH on and the cable installed, the MNBDM will detect a problem and trip the breaker within about 5-7 seconds. This is a fail-safe feature that requires the system to be intact and working before energizing.

On-Board Test Button: A small test button is located on the front edge of the MNBDM board. Pressing the test button only trips the one breaker in that panel. Note that there is 2 second delay after pressing the button before the breaker trips.

Special Technology

Remote Trip Circuitry: The trip signal for the MNBDMs and combiners is generated by the MNBH Disconnect Panel.

CAT-5 Communication Network: Control signals are provided to the target devices via a ruggedized 600V CAT-5 cable, which connects all components in the system.

System Voltage Selection Jumper (REV C and newer PCBs): This setting is on REV C and newer PCBs. Users can set the correct battery voltage using jumper JP1. For 24V battery banks, set JP1 to position A; for 36V or 48V battery banks, set JP1 to position B.

Power-On Self-Test: The MNBDM LED will briefly blink (off) three times when power is first applied. This is normal and indicates that the board is working properly.

Warranty

The Battery Disconnect Module (MNBDM) comes with a 5-year limited warranty, covering manufacturer defects in materials and workmanship. Warranty support is valid in the U.S. and Canada. 

Best Use

Emergency System Shutdown: Critical for providing a rapid and complete shutdown of battery power in emergency situations.

Solar Power Systems with Disconnecting Combiners: Integrates seamlessly into systems utilizing MidNite's disconnecting combiners for comprehensive system control.

24V and 48V Battery Systems: Optimized for use with 24 and 48 volt battery systems.

Enhanced System Safety: Provides an additional layer of safety by allowing remote battery disconnection.

Code Compliance: All installations must comply with national and local electrical codes. Professional installation is recommended.

Specifications Table

About MidNite Solar

MidNite Solar, located in Arlington, Washington, is a leading U.S. manufacturer of renewable energy system components. Their product line includes MPPT charge controllers, lithium battery enclosures, E-Panels, combiner boxes, and rapid shutdown solutions—all engineered for safety, reliability, and NEC compliance. MidNite products are trusted by solar professionals around the world for use in residential, commercial, and off-grid applications, delivering long-lasting performance and installer-friendly design.

Why Buy From US Solar Supplier?

As an American founded company out of Kentucky, US Solar Supplier is committed to providing top-quality solar products, backed by the world’s leading manufacturers. Our promise is to get you the fairest price from the best brands that offer warranties you can count on. We are updating our inventory daily with solar components that offer the latest technology. With a reputation for excellence and a dedication to customer satisfaction, we ensure that every product we sell meets the highest standards in the industry.

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