75920 SERIES
36V MASTER BATTERY DISCONNECT SWITCH
Specifications
Current Rating Continuous:
400A @ 12V
300A @ 24V
200A @ 36V
Intermittent Current in Amps:
At 12V all, 5 cycles :
1000A 90 sec on, 5 min off
1500A 60 sec on, 5 min off
2000A 30 sec on, 5 min off
3000A 15 sec on, 5 min off
75920
75921-02
Max Voltage Rating:
Ignition Protection:
Ingress Protection:
Mounting Method:
Circuitry:
36 VDC
UL 94V-0
IPX8
Through Hole
SPST
75920-01
Operating Temp Range:
-40 to +85 °C
Description
Applications
• Heavy-DutyTruck
• Construction
• Mining
Keep service personnel safe and protect the battery and
electrical systems in your emergency vehicle, tractor,
heavy-duty truck, or boat with the 75920 Series 36V
Master Battery Disconnect Switch.
• Off-Road Vehicles
• Emergency Vehicles
• Marine
• Agricultural Equipment
• Material Handling
The heavy-duty battery disconnect switch ensures the
safety of service professionals by disconnecting the
battery from the vehicle electrical system, safeguards
against battery drain from parasitic loads, and features
built-in lock-out/tag-out for tampering and theft prevention.
Features and Benefits
• High amperage continuous current capacity of 400A with
a single 4/0 cable at 12V DC, 300A at 24V DC, or 200A at
36V DC
• IPX8-rated waterproof battery disconnect switch for
external mounting on vehicles as well as installation on
boats and marine equipment
As an IPX8-rated waterproof battery disconnect switch, it
is ideal for a wide range of vehicles, including construction
equipment, heavy-duty trucks, boats, and vehicles
operating in harsh conditions, such as snowplows and
snow removal equipment. Fitting a standard master
disconnect mounting pattern, the 75920 series can be
used as a drop-in replacement.
• Can be used in high-side or low-side applications
• Black or gray thermoplastic housing with a UL 94 V-0 rating
• Tested per SAE J1455 for salt, calcium chloride, and
magnesium chloride, delivering a rust- and corrosion-free
high-amp battery disconnect
With a large knob that makes manual operation simple,
plus clear switch position markings and 90° switch travel,
the high-amp battery disconnect can effectively be used as
a manual emergency power cutoff switch.
• Large red, yellow, or black knob makes the master battery
disconnect switch easy to operate while wearing gloves,
and the 90° switch travel makes it simple to identify the
switch position
• Built-in lock-out/tag-out (LOTO) satisfies OSHA
requirements for an energy isolation device
Web Resources
Download 2D print, installation guide and technical
resources at: littelfuse.com/75920
• Large divider on the base prevents accidental shorting of
high energy cables
Littelfuse.com
© 2023 Littelfuse, Inc.
092823-A
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