Battery-Related Products

75920 Master Disconnect Switch

High amperage capacity: 300A at 12V DC.

Protects vehicles against tampering, theft and battery drain.

Protects from hazards during vehicle servicing,and can be locked-out or tagged-out. Provides an effective emergency power cutoff.
Can be used in both positive or in negative path applications.
Waterproof and dustproof to IP67 (immersible).
Switch can be located in the best location, regardless of environment.
Composite engineered polymer housing will not rust or corrode.
Tested per SAE 1455 for salt corrosion.
Large red knob is easy to operate with gloved hands; 90º switch travel makes it easy to identify the switch position.
Built-in lockout satisfies OSHA requirements for an energy isolation device.
Attractive styling suitable for visible mounting close to operator.
Large divider on base prevents accidental shorting of high energy cables.
Fits standard Master Disconnect mounting pattern.
Knob is secured in place with a set screw.

Property Value
Installation fits standard Master Disconnect Switch hole
Operating temperature range -40degC to +85degC
Corrosion test 96hours salt spray test to ASTM standard
Vibration test 10-500Hz to SAE J1455
Shock test To SAE J1455
Battery terminals 3/8" - 24 70-90 in-lbs (8-10Nm)
Mounting hardware 3/4" - 16 18ft-lbs max (24.4Nm)
Operating voltage 6V min 36V max
Continuous current 12V 300A max, 24V 250A max, 36V 200A max
Intermittent current 12V 1000A 90sec On 5 min Off
Intermittent current 12V 1500A 60sec On 5 min Off
Intermittent current 12V 2000A 30sec On 5 min Off
Intermittent current 12V 3000A 15sec On 5 min Off
Description Master Battery Disconnect Switch
Continuous Rating 300A max at 12V, 250A max at 24V, 200A max at 36V DC
intermittent Rating 1000A at 12V 90sec On, 5min Off, 3000A at 12V 15sec On, 5min Off
Lockout Integral holes accept padlock. Meets OSHA requirements
Case Engineering thermoplastic
Sealing Waterproof and dustproof to IP67, tested to SAE J1455
Bezel imprint 'On' and 'Off'

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