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Pro Installer Selector Battery Switch with Alternator Field Disconnect


Model # 15798945 | Mfg # 771-SFD
In stock online.

This innovative switch combines the benefits 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 & Benefits:

  • 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


  •  Alternator Field Disconnect: Yes
  •  Continuous Amps: 400A
  •  AFD Field Contacts: 10A Continous Rating
  •  Intermittent Amps: 600A
  •  Maximum Momentary Rating: 1500A
  •  Switch Material: Reinforced Polycarbonate
  •  Terminal Size: Connection stud size: M10 (3/8"), AFD stud size M4 (5/32")
  •  Switch Dimensions: 3 7/8"H x 3 7/8"W x 3 5/8"D
  •  Waterproof Rating: P66 – protection from powerful water jets, Ignition protected
  •  Approvals: Independently tested to meet UL1107 standards, CE
  •  Warranty: Five years

Pro Installer Selector Battery Switch with Alternator Field Disconnect

Amperage 400 Amps
Cold Cranking Amps 1500 Amps
Color Red
Dimensions 3 7/8" Width x 3 7/8" Length x 3 5/8" Height
ISO Approved UL1107 Ignition Protection
Type On/Off Switches
Voltage 6/12/24/36 Volts Systems
Warranty Details Five Years

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