Battery selector switch 500A HD-Series 3003

Series 3003.

Switches isolated battery banks to all loads or combines battery banks to all loads
Includes AFD (Alternator Field Disconnect)
Make-before-break contact design allows switching between battery banks without power interruption
Ignition protected—safe for installation aboard gasoline powered boats
Case design allows surface or rear panel mounting
Accepts two 4/0 AWG (95mm²) battery cables.

Specifications:
Selector 4 Position
Color Grey
Switch Positions 4
Battery Combine Yes
Alternator Field Disconnect Alternator Field Disconnect protects the diodes in the alternator in the event of the switch being switched to the OFF position while the engine is running. if the AFD is not used to protect the alternator, an LED can be connected to the AFD terminals to indicate when the battery switch is in any position but OFF. Yes
Maximum Voltage 32V DC
Terminal Stud Torque 220 in-lb (24.86 Nm)
Continuous Rating The maximum current a switch is designed to conduct for an indefinite period. 500A
Intermittent Rating The maximum amount of current a switch is designed to carry for a minimum of a designated period of time. 700A (5 min)
Cranking Rating 30 sec Normally associated with 'cranking current' which is the current required by the starter circuit prior to engine starting. The cranking current varies significantly during the starting cycle. Initially, there is a large surge of current required to overcome the inertia and compression of the engine. This surge can be two to four times the average cranking current. Once the engine is turning there are peaks and valleys as the pistons go through the compression and exhaust cycles. The cranking current rating is used for sizing batteries, cables, and battery switches. 1600A
Battery Inputs 2
Cable Clearance For 4/0 AWG Cables 1.10in (27.94 mm)
Cable Quantity to Meet Ratings Two Cables / Terminal
Cable Size to Meet Ratings 4/0 AWG (120mm²)
Mounting Holes Accept 1/4" (M6) Screw
Terminal Stud Size 1/2" (M12)