Vypínač baterií HD-Series 3-polohový zesílený s AFD

The BLUE SEA HD-Series Heavy Duty 3-position battery selector with AFD, part number 11003, allows you to choose between two isolated battery banks (positions OFF, 1 or 2) for general power or emergency starting.

This battery selector switch has a continuous rated current of 500 amperes (A). It can also handle an intermittent current of 700 A for 5 minutes and a cranking current of 1,600 A for 30 seconds.

The maximum operating voltage for this switch is 32 Volts DC.

The AFD (Alternator Field Disconnect) function protects the alternator's diodes from destructive overvoltages. This protection activates if the switch is turned to the OFF position while the engine is running, preventing damage to the alternator.

Yes, this selector is designed for demanding marine electrical systems and is particularly suited to applications requiring increased electrical robustness, especially for large diesel engines and high-consumption systems.

The rated currents for this selector are:

Starting (30 seconds): 1 600 A
Intermittent (5 minutes): 700 A

The terminals are made of tin-plated copper for maximum conductivity and corrosion resistance. Their size is M12-1.75 (1/2").

Yes, this selector is classified as ignition-protected. It is marked as such and meets the external ignition protection requirements UL 1500 and SAE J1171, as well as ISO 8846.

The terminal studs are 22.22 mm (7/8") long, allowing multiple cable lugs to be fitted.

Yes, the terminals are of one-piece design. This feature reduces the risks of overheating and loosening over time, ensuring safe and reliable connections.

Yes, this battery selector switch meets all American Boat and Yacht Council (ABYC) requirements for battery switches. It is also UL listed per UL 1107 for electrical power switches and compliant with Directives 94/25/EC and 2003/44/EC.

This battery selector switch has an IP66 ingress protection rating, meaning it is dust-tight and protected against powerful water jets.

Yes, this device uses a "Make-Before-Break" contact design. This allows switching between battery banks without interrupting power supply, which is critical for sensitive electronic equipment.

The HD (Heavy Duty) series stands out for its ability to handle higher currents. Compared to the m-Series (300A continuous) and e-Series (350A continuous), the HD series offers 500A continuous current, 700A intermittent current, and a starting current of 1,600A, making it more robust for demanding applications.

The selector should be installed in an easily accessible location near the batteries.

To comply with the switch's nominal values, it is recommended to use battery cables of 4/0 AWG (120 mm²) gauge.

Battery cable terminals must be secured under the locking washer and nut with a torque of 24.86 N·m (220 lb-ft).

To wire the AFD function, you must cut the field wire running from the alternator to the voltage regulator. Then connect one end of this wire to terminal F1 of the switch and the other end to terminal F2.

Yes, before any installation, it is imperative to disconnect the positive terminal of the battery. It is also strongly recommended to consult a marine electrical professional to ensure correct and secure wiring.

Yes, given that the maximum operating voltage is 32V DC, this selector is compatible with standard 12V and 24V marine electrical systems.