Mastervolt MasterShunt 500 Battery Monitor with NMEA 2000 and CZone, No Fuse

Precision Digital Shunt for Advanced Marine and Off-Grid Power Systems

The Mastervolt MasterShunt 500 CZone is an integrated digital battery monitor designed to deliver complete visibility and automated control over your DC power bank. Unlike standard standalone monitors that only display basic metrics on a local screen, this intelligent shunt acts as the central information hub for your energy storage system. By measuring voltage, current, state of charge (SOC), and time remaining with exceptional accuracy, it provides the critical data needed to manage power consumption and protect your battery investment.

Engineered for demanding marine, mobile, and off-grid industrial applications, the MasterShunt 500 seamlessly shares real-time battery data across your entire electrical network. This allows connected battery chargers, inverter/chargers, and multifunction displays to adjust their operation dynamically based on the exact state of your battery bank, reducing the risk of premature battery degradation or unexpected power loss.

Unmatched System Integration and Automation

Equipped with native support for MasterBus, CZone, and NMEA 2000 communication protocols, this unit eliminates the need for complex bridging hardware. You can monitor your battery bank directly from compatible marine chartplotters, CZone touchscreens, or Mastervolt displays. Furthermore, the built-in real-time clock and programmable event architecture allow you to automate your power system. You can configure the shunt to automatically start a backup generator when the state of charge drops below a specific threshold, or trigger high-priority alarms at a designated depth of discharge.

Flexible Fuse Configuration and Serviceability

This specific variant (SKU: MV-77020115) is supplied in a no-fuse configuration, featuring a heavy-duty internal busbar installed out of the box. This provides system designers with the flexibility to utilise external circuit protection or install a specific main fuse directly into the unit. The internal busbar can be easily replaced with either an ANL fuse or a Class T fuse (ordered separately), saving valuable installation space and reducing cable connections by combining your primary battery fuse and shunt into a single footprint.

• Comprehensive Telemetry: Accurately tracks battery voltage, current draw, state of charge (SOC), and estimated runtime remaining.
• Multi-Network Compatibility: Integrates directly with MasterBus, CZone, and NMEA 2000 networks for system-wide data sharing and display integration.
• Intelligent Automation: Features programmable system events and an internal real-time clock to automate generator starts, load shedding, or low-voltage warnings.
• Maintenance Service Mode: Prevents the loss of historical battery data and system memory when power is disconnected during routine battery maintenance.
• Customisable Circuit Protection: Supplied with an internal solid busbar that can be swapped out for a high-interrupt Class T or ANL main fuse (fuses sold separately).
• Scalable Architecture: Supports parallel installation of multiple MasterShunt units for high-capacity systems requiring higher current ratings.
• Safe and Modular Design: Built with a ventilated housing, transparent terminal isolation covers, and MasterConnect compatibility for streamlined connection to Mastervolt DC Distribution systems.

Engineered for Reliability and Safety

High-current DC systems require robust physical protection and secure connections. The MasterShunt 500 features a durable, ventilated housing designed for efficient heat dissipation under heavy loads. Clear protective covers isolate the high-current DC connection terminals to prevent accidental short circuits in tight electrical lockers. For larger vessels or expansive off-grid setups with massive inverter loads, multiple MasterShunt 500 units can be installed in parallel to increase the overall current handling capacity without sacrificing monitoring accuracy.

Upgrade Your Power Management System

Equip your vessel, off-grid cabin, or specialized vehicle with the Mastervolt MasterShunt 500 for accurate telemetry and automated system protection. Add this intelligent digital shunt to your build today to streamline your DC distribution and gain complete control over your energy reserves.