Shunt Victron Energy SHU050130050 300A 50mV for battery monitoring and DC systems

Victron Energy SHU050130050 is a precision shunt rated for 300 A that produces a 50 mV drop at full load, designed for integration with battery monitoring systems and DC electrical installations. It measures current flow accurately in charge and discharge cycles and provides a reliable voltage reference for battery monitors and energy-management devices. The shunt is suitable for solar, marine, RV and off-grid systems where continuous current measurement and system protection are required.

Advantages

The shunt offers accurate low-resistance measurement with a defined 50 mV calibration point at 300 A, enabling straightforward connection to most battery monitors and controllers. Its robust construction ensures stable readings under continuous load and varying environmental conditions. By converting high currents to a small measurable voltage, it allows energy management equipment to perform state-of-charge calculations, logging and alarm functions without introducing significant power loss into the DC system.

Suitable for

• Monitoring battery charge and discharge in solar PV systems
• Current measurement in marine electrical installations
• Energy monitoring for RV and caravan power systems
• Off-grid and backup power systems with battery banks

Key specifications

• Rated current: 300 A
• Rated voltage drop: 50 mV at rated current
• Type: DC precision shunt for external battery monitors
• Function: Converts current to proportional voltage for monitoring

How to use

Install the shunt in the negative DC return line between the battery negative terminal and the system grounding point or negative busbar. Connect the high-current conductors to the shunt’s heavy-duty terminals and run the small-voltage sense leads from the shunt’s sense posts to the corresponding input on the battery monitor or energy management device. Ensure all connections are tight and protected from corrosion. Configure the connected monitor to the shunt’s 50 mV / 300 A rating so the device can correctly translate voltage drop into current and integrate that data into state-of-charge and energy-flow calculations.

Usage recommendations

Place the shunt where it is accessible for inspection and where ambient temperature is stable; avoid mounting near high-heat sources. Use appropriately sized cable and secure mechanical connections to minimize additional resistance. Verify monitor settings match the 50 mV at 300 A characteristic to ensure accurate readings and reliable battery management.