Battswitch w/Alternator Disconnect

Overview

Battswitch w/Alternator Disconnect is a medium-duty battery switch designed for multi-battery configurations in single- or dual-engine systems. It provides selection between batteries for starting/charging or running both in parallel, supports adding an extra battery for accessories, and includes an emergency OFF disconnect. Ignition-protected and surface-mounted, it is suitable for systems under 50 volts and UL Listed.

Key Features

• Medium Duty battery switch
• For use with two or more batteries and single or dual engine systems
• Permits selection between batteries for starting and charging or operation of both batteries in parallel
• Allows addition of an extra battery for use with accessories
• OFF position also acts as an emergency disconnect
• Ignition protected
• Surface mount
• For use with systems under 50 volts
• Capacity: 250 amps continuous, 360 amps intermittent
• Alternator Field Disconnect (AFD) models available; when used with non-utilized alternators, these models interrupt the field current if turned “OFF” with the engine running

Compatible Applications

• Multi-battery configurations for vehicles, boats, and other equipment
• Single or dual engine systems
• Systems under 50 volts

Product Details

• SKU: 9-8503DP
• Weight: 392 grams
• Size: 5-1/4 dia. x 2-5/8 deep
• Capacity: 250 amps continuous, 360 amps intermittent
• Voltage: For use with systems under 50 volts
• Mounting: Surface mount
• Properties: Ignition protected; UL Listed
• OFF position: emergency disconnect
• Alternator Field Disconnect (AFD) models: will interrupt the field current when OFF with engine running for non-utilized alternators
• Use with two or more batteries and single or dual engine systems

Parts Desk Insights

Best Use Case: Ideal for multi-battery installations where you need to isolate batteries for safety or to run them in parallel, with the option to add an extra battery for accessories.

Common Issues: If using AFD models with non-utilized alternators, turn OFF with the engine running to interrupt the field current and reduce potential damage. Ensure system voltage stays under 50 volts and the device is properly surface-mounted.

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• Browse Electrical & Accessories – No specific related products data provided. Explore the Electrical & Accessories category for related switches and battery management components.