Alternators, Battery Disconnect Switches, Electrical Accessories
181 FR1057 Watch Dog® – The Next Level
Automatic Battery Disconect Switch
The Watch Dog® is capable of handling 300 Amps of current
continuously and designed with versatility in mind to function
on both 12V and 24V systems. Utilizing bistable “magnetic latch”
technology, the Watch Dog ® secures its ON/OF positions
without current draw and requires over 80G of force to
mechanicaly separate the contacts. The Watch Dog® has
some of the highest International Protection ratings of
IP76 and IP69K, ensuring that water and dust stay out.
The Watch Dog® has built-in programmable time delay
settings and a manual emergency toggle switch with a
system status LED indicator.
Included in the package:
• Watch Dog® Main Battery Disconect Switch
• Emergency Toggle Switch
• 4-way wire harness (8.33 feet)
• 7-way wire harness (13.25 feet)
• Momentary Push Button
Top 5 Reasons to Use Watch Dog®:
• S implify your shutdown routine with automatic battery disconection and a programmable time
delay (default 6 min).
• Bistable “Magnetic Latch” Technology. Main switch can maintain the ON and OF positions
without current consumption.
• M ax continuous current load of 300 Amps. Supports 12V and 24V systems out of the box.
• I ncredibly durable. Dust and water tight, even against high pressure water jets.
• S afety is a priority with the included Emergency Toggle Switch for manual Watch Dog® control.
*NOTE : The Watch Dog® system is an electromechanical battery disconect switch. The emergency
external switch wil only disconect the battery from the electrical system. This product is NOT designed
to deactivate the alternator or shut down the vehicle completely.*
Description 300 Amp Watch Dog® Battery Disconnect
Part No. FR1057
Voltage 12V/24V
Max Continuous Current 300 Amps
Max Surge Current 1,000 Amps (30 seconds) 2,000 Amps (5 seconds)
Environmental Protection Rating IP67 and IP69K (water pressure cleaning)
Waterproof Yes
Corrosion Resistance Salt Spray Test: 300h
Terminal Length 0.670” (approx. 43/64 in)
Terminal Diameter M10
Operating Temperature Range -40°C to +85°C -40°F to +185°F
Internal Contacts Silver-Plated Copper with Silver Pads
Contact Terminals Silver-Plated Copper with Silver Pads
Contact Hardware Nickel-Plated Brass
Automatic Shut-Off Yes
Manual Emergency Shut-Off Yes
Programmable Time Delay 6 Min. (Default), 3 Min., 1 Min., 30 Sec.
Battery Disconnect Mode Positive and Negative
Terminal Covers Included Yes
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Automatic Battery Disconnect Safety Switch