Blue Sea BS 11001 3-Position Battery Main Switch with Alternator Field Disconnect (or Alternator Field Shutdown, AFD for short) for diesel and petrol engines. The switch is ignition-protected and suitable for two batteries.
KEY FEATURES
- Switches isolated battery banks to all loads
- Ignition protected for installation aboard gasoline-powered boats
- Case design allows surface or panel mounting
TECHNICAL DETAILS
- Switch Positions: 3 - On/Off/to all loads
- Battery Combining: no
- Color: red
- Alternator Field Disconnect (AFD): Yes (Disconnect switch protects the diodes in the alternator when the switch is switched to OFF with the engine running. If the disconnect switch 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 other than OFF.)
- Maximum Voltage: 32V DC
- Terminal Stud Torque: 15.82 Nm
- Continuous Current: 350 Amps.
- Peak Current: 600 Amps
- Cranking Current 10 sec: 2000 Amps. The current required by the starter before starting the engine. Cranking current varies significantly during the starting cycle. Initially, there is a large current surge required to overcome the inertia and compression of the engine. This surge can be two to four times the average cranking current. Cranking current is used for sizing batteries, cables, and battery switches.
- Cranking Current 30 sec: 1200 Amps. The current required by the starter before starting the engine. Cranking current varies significantly during the starting cycle. Initially, there is a large current surge required to overcome the inertia and compression of the engine. This surge can be two to four times the average cranking current. Cranking current is used for sizing batteries, cables, and battery switches.
- Cranking Current over 1 Minute: 1000 Amps. The maximum current for which the switch is designed, when the starting phase does not exceed one minute when starting an engine.
- Battery Input: 2
- Cable Clearance for 4/0 AWG Cable: 27.94 mm
- Recommended Cable Thickness: 4/0 AWG (120mm²)
- Mounting Holes: 1/4" (M6) screw
- Terminal Stud Size: 3/8" - 16 (M10)
- Weight: 0.59 kg