Blue Sea 3001 – HD-Series Heavy Duty Battery Switch with AFD, Single Circuit ON/OFF, 500A Continuous

ID 1065981

$ 192.51

1-2 weeks delivery time

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The Blue Sea 3001 is a heavy-duty single-circuit ON/OFF battery switch with AFD (Alternator Field Disconnect), rated for 500 A continuous, 900 A intermittent (5 min), and 1750 A cranking (30 s), supporting 32 V DC, with 1/2" (M12) terminal studs, accepting two 4/0 AWG (120 mm²) cables, and providing IP66 ignition-protected operation.

Description
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Blue Sea 3001 – HD-Series Heavy Duty Battery Switch with AFD, Single Circuit ON/OFF, 500A Continuous

The Blue Sea 3001 HD-Series Battery Switch is designed to switch a single battery to a single load group and includes an Alternator Field Disconnect (AFD) to protect alternator diodes if the switch is turned OFF while the engine is running. The switch is ignition protected for safe installation aboard gasoline-powered boats and supports both surface and rear panel mounting.

Key Features

Single circuit ON/OFF battery switching
Integrated Alternator Field Disconnect (AFD)
Ignition protected for gasoline engine compartments
Surface or rear panel mounting capability
Accepts two 4/0 AWG (120 mm²) battery cables

Electrical Ratings

Maximum Voltage	32 V DC
Continuous Rating	500 A
Intermittent Rating	900 A (5 minutes)
Starting Rating	1750 A (30 seconds)

Switch Configuration

Switch Type	Single Circuit ON-OFF
Switch Positions	2
Battery Inputs	1
Battery Combine	No
Alternator Field Disconnect	Yes

Terminal & Cable Specifications

Terminal Stud Size	1/2" (M12)
Stud Material	Tinned copper
Terminal Stud Torque	220 in-lb (24.86 Nm)
Cable Size to Meet Ratings	4/0 AWG (120 mm²)
Cable Quantity	Two cables
Cable Clearance (4/0 AWG)	1.10 in (27.94 mm)