Selector Battery Switch with
Alternator Field Disconnect
771-SFD
400A Selector Field Disconnect (Retail Packed)
771-SFD-B
(Bulk Packed)
www.bepmarine.com | www.mastervolt.com | www.marinco.com
This innovative switch combines the benefi ts of
a selector switch, with a second set of contacts
to protect electronics and the alternator if the
battery switch is inadvertently turned off while
the engine is running.
Features & Benefi ts:
• Protects Alternator while switching
• Industry standard footprint
• Three mounting options – surface, rear-panel and front-panel
• Compatible with metric and imperial mounting fasteners
• User friendly design
• Removable knob for isolation/safety
• Includes back cover and three side panels for security
and cable protection
• Designed to withstand harsh marine environments
• High temperature reinforced plastics
Specifi cations:
• Continuous rating: 400A
• Intermittent rating: 600A
• Cranking rating: 1500A
• AFD Field Contacts: 10A Continous Rating
• Connection stud size: M10 (3/8”)
• AFD stud size M4 (5/32”)
• 12-48V DC (Higher voltage applications on request)
• IP66 – protection from powerful water jets
• Ignition protected
• Independently tested to meet UL1107 standards
• CE
5 YEAR WARRANTY
Installation Instructions: IMPORTANT! Read before installing
• It is recommended that electrical terminations and connections are carried out by a marine electrical technician.
• These battery switches are for isolation purposes and are not designed for switching under load.
Ensure there are no circuits with high inductive loads directly connected to the
switch in order to prevent any sudden in-rush of current which may cause damage
to the switch.
• Although specially selected chemical resistant materials have been used,
we recommend that for maximum product life only plastic safe corrosion inhibiting
sprays are used.
• Ensure all cables are sized correctly for the loads they carry.
Please refer to www.bepmarine.com to calculate correct cable sizes.
• Ensure all electrical connections are correctly tightened to prevent any damage to the
battery switch.
• WARNING: Ensure fi eld disconnect contacts are wired to interrupt alternator fi eld current.
TO
RQUE
Plastic safe
Petroleum
based
solvents
1
2
Selector Switch
(with Alternator
Field Disconnect)
