Newmar 2-3-120 Battery Isolator, 120 Amp, 2-Alternator 3-Battery

The Newmar 2-3-120 Battery Isolator is a heavy-duty unit designed to manage charging for up to three battery banks from two alternator sources. It automatically distributes charge based on individual battery needs, preventing discharge between banks in 12V, 24V, 36V, or 48V negative ground DC systems.

Key Features:

• Designed for 120 Amp maximum input capacity
• Features a rust-proof anodized aluminum heat sink case for thermal management
• Includes stainless steel mounting hardware and terminal protective covers
• Operates in temperatures ranging from -40°F to 80°C
• Voltage drop rated at 0.7V at 50% load and 0.9V at full load
• Terminal size: 6mm studs
• Dimensions: 12.5 in. L x 4.5 in. W x 3.1 in. H
• Weight: 5 lbs.

Installation Note: This isolator is not compatible with self-exciting alternators; the alternator must have an external excitation lead. For optimum cooling, mount the unit vertically. The device is rated for continuous duty up to 50°C, with linear derating to 70% at 80°C.