Newmar 1-2-120 Battery Isolator

The Newmar Power 1-2-120 Battery Isolator is built to let two battery banks charge from one alternator while helping prevent one battery from discharging into another. It is rated for negative ground DC systems and uses a heavy-duty case with protected terminals for marine and mobile electrical installations.

• Model: 1-2-120
• Alternator sources: 1
• Battery banks: 2
• Maximum amperage input capacity: 120 amps
• System rating: 12, 24, or 36 Volt negative ground DC systems
• Maximum system rating: Up to 48 Volts DC, negative ground
• Case: Rustproof anodized aluminum heat sink case
• Hardware: Stainless steel mounting hardware included
• Terminal protection: Protective terminal covers included
• Operating temperature: -40 to +80 degrees
• Duty cycle: Continuous rating to 50 degrees C; derate linearly to 70% at 80 degrees C
• Temperature rise: 5 degrees C at full rated current when mounted vertically for optimum cooling
• Voltage drop: 0.7V at 50% load; 0.9V at full load
• Stud terminal size: 6mm
• Dimensions: 6.5 in. L x 4.5 in. W x 3.1 in. H
• Weight: 3 lbs.
• Compatibility note: Not compatible with self-exciting alternators; the alternator must have an external excitation lead