Electrical & Battery Disconnect Switches

Electrical disconnect switches have several important jobs in commercial vehicles and equipment. Battery disconnect switches cut-off electrical power, help protect against electrical fires and theft when equipment is not in use, provide a reliable shutdown of power during maintenance, and protect batteries from excessive drain.

Commercial vehicle electrical systems are very demanding of batteries. Excessive drain happens even when the ignition switch is in the off position. Master disconnect switches are designed to power down the vehicle completely, protecting against parasitic battery drain. Cutting off the battery with a master battery disconnect switch removes all parasitic loads and small leakage currents that kill a battery over time.

Disconnect switches also prevent injury of the technicians repairing electrical systems by disconnecting all power. Current drain also happens when the ignition is on, and the vehicle or equipment is idling, like in police cars, ambulances, trucks and delivery fleets. In this case, you can't disconnect the main power, because you still need the electrical system to run. Low voltage disconnect switches are an ideal option. They monitor the battery loads and automatically disconnect only non-critical loads from batteries to prevent excessive discharge.
1 - 12 of 31
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Description
Price
Quantity
Item#:
44029
Manufacturer Item:
51-916
Manufacturer:
Pollak
Min. Order Qty:
1
Avail #:
88
1+
21.9100
10+
18.6200
50+
16.4300
EACH
  • Pollak 51-902 Battery Master Disconnect Switches
  • Category: Disconnect Switches
  • Manufacturer: Pollak
  • Circuitry: SPST
  • Contact Action: On-Off
  • Current Rating: 180A
  • Voltage Rating: 6-36V
  • Terminal Type: (2) 3/8" Studs
  • Dimensions: 2-5/8" diameter, 4-3/8" long
  • Mounting stem: 3/4" diameter, 1/2" long
  • Lever operated
  • One piece die-cast housing, sealed
  • For battery circuit only
  • Does not disconnect alternator or generator
  • 1,000 amp in-rush rating
  • Key operated Pollak 51-916 Master Disconnect Switch also available
Item#:
44030
Manufacturer Item:
51-902
Manufacturer:
Pollak
Min. Order Qty:
1
Avail #:
601
1+
24.5900
10+
20.9000
50+
18.4400
EACH
Item#:
44031
Manufacturer Item:
51-904
Manufacturer:
Pollak
Min. Order Qty:
1
Avail #:
160
1+
23.5600
10+
20.0200
50+
17.6700
EACH
  • Cooper Bussmann Eaton 15250-1BLR Battery Disconnect Switch
  • Category: Disconnect Switches
  • Manufacturer: Cooper Bussmann Eaton
  • Switch Type: Mechanical
  • Amp Rating: 400A
  • Max Volts: 50V
  • Contact Action: On-Off
  • Mounting Bracket included
  • Terminal : 1/2-13 thread tin plated stud
  • Dimensions: 8" W x 4.19" H
  • Non-fused current interrupt disconnect
  • Opens circuit between a battery and the complete electrical load
  • Max surge 2,000 amps on 20% duty, with 5 seconds on time
  • Recommended mounting on negative battery post
Item#:
44033
Manufacturer Item:
15250-1BLR
Manufacturer:
EATON
Min. Order Qty:
1
Avail #:
0
1+
191.3800
10+
172.2400
50+
162.6700
EACH
Item#:
44034
Manufacturer Item:
51-322
Manufacturer:
Pollak
Min. Order Qty:
5
Avail #:
55
1+
1.2700
10+
1.0700
50+
0.9525
EACH
  • Emergency stop disconnect switch
  • Heavy duty strike off switch
  • Twist to connect, push to disconnect
  • -13°F (-25°C) to 185°F (85°)C temp rating
  • 250A at 24V
Item#:
44037
Min. Order Qty:
1
Avail #:
118
 
RoHS Compliant
REACH Compliant
1+
49.3100
10+
44.3700
50+
41.9100
EACH
  • Cole Hersee M-750 Master Battery Selector/Disconnect Switch
  • Category: Disconnect Switches
  • Manufacturer: Cole Hersee
  • Switch Type: Mechanical
  • Circuitry: SPST
  • Amp Ratings:
    • 310A for Continuous Duty
    • 500A for Intermittent Duty
  • Max Volts: 6-36V Variable
  • Contact Action: On-Off
  • Contact Type: (3) 3/8" Studs
  • Heavy-duty vaporproof, weather-, dust-, and corrosion-resistant
  • Marine UL Listed
  • Minimizes battery drain
  • Gives a reliable shutdown of power during maintenance
  • Helps protect against electrical fires, when the vehicle is not in use
  • Provides back-up starting power in an emergency
  • Allows use of the first, second or both batteries simultaneously
  • Can be surface mounted or installed through 3-5/16" diameter panel hole
Item#:
44043
Manufacturer Item:
M-750
Manufacturer:
Cole Hersee-A Littelfuse Brand
Min. Order Qty:
1
Avail #:
33
 
RoHS Compliant
REACH Compliant
1+
40.7300
10+
36.6500
50+
34.6200
EACH
  • Cole Hersee 880062 Terra Battery Disconnect Switch
  • Category: Disconnect Switches
  • Manufacturer: Littelfuse Terra Power Systems
  • SR Series
  • Switch Type: Mechanical
  • Circuitry: SPST
  • Amp Rating: 300A
  • Max Volts: 32V
  • Contact Action: On-Off
  • Panel mount
  • Temp. Range: -58°F (-50°C) to 221°F (105°C)
  • Terminal stud size 3/8"-16 x 7/8" Long
  • Isolate high current DC circuits from battery sources
  • Stainless steel hardware and tin-plated copper studs
  • Ignition protection to SAE J1171 and ISO 8846 for installation in a battery box of on vehicles carrying hazardous loads
  • Internal components protected from harsh weather environments: IP66 & IP6K9K rated
Item#:
44056
Manufacturer Item:
880062
Manufacturer:
Cole Hersee-A Littelfuse Brand
Min. Order Qty:
1
Avail #:
72
1+
26.5500
10+
22.5700
50+
19.9100
EACH
  • Cole Hersee 880175 Battery Disconnect Switches
  • Category: Disconnect Switches
  • Manufacturer: Littelfuse Terra Power Systems
  • TR Series
  • Switch Type: Mechanical
  • Circuitry: DPST
  • Amp Rating: 500A
  • Max Volts: 48V
  • Contact Action: On-Off
  • Contact Type: (4) M12 Studs
  • Dual pole master battery disconnect switch ideal for cutting electrical system from the battery
  • Also used for applications needing switching of two circuits or switching both positive and negative
  • Switch two vehicle voltage circuits simultaneously (24V and 12V)
  • Direct lockout/tagout capability in the on or off position (padlock or hasp)
  • With an ingress protection to IP67 and IP69K, the master disconnect switch can mount in exposed locations on the vehicle
  • Drop-in replacement to existing competitive master disconnect switch
  • Ignition protected to SAE J1171 and ISO 8846 for installation in a battery box or on vehicles carrying hazardous loads
  • Turning the key to the right 90° will turn ON the switch, turning the knob/key to the left 90° will turn OFF the switch
  • Turning the key will simultaneously turn on or off both poles of the switch
  • High power connections are made via ring terminals or eyelets on cables to the device's terminal studs with markings adjacent to terminal studs for circuit 1, 2, 3, 4
Item#:
44057
Manufacturer Item:
880175 TR SERIES
Manufacturer:
Cole Hersee-A Littelfuse Brand
Min. Order Qty:
1
Avail #:
12
 
RoHS Compliant
REACH Compliant
1+
55.1500
10+
46.8700
50+
41.3600
EACH
  • Cole Hersee 880064 Terra Battery Disconnect Switch
  • Category: Disconnect Switches
  • Manufacturer: Littelfuse Terra Power Systems
  • SR Series
  • Switch Type: Mechanical
  • Circuitry: SPST
  • Amp Rating: 300A
  • Max Volts: 32V
  • Contact Action: On-Off
  • Panel mount
  • Temp. Range: -58°F (-50°C) to 221°F (105°C)
  • Terminal stud size 3/8"-16 x 7/8" Long
  • Isolate high current DC circuits from battery sources
  • Stainless steel hardware and tin-plated copper studs
  • Pad lock-out for protection from tampering or when the electrical system is being serviced
  • Ignition protection to SAE J1171 and ISO 8846 for installation in a battery box of on vehicles carrying hazardous loads
  • Internal components protected from harsh weather environments: IP66 & IP6K9K rated
Item#:
44058
Manufacturer Item:
880064
Manufacturer:
Cole Hersee-A Littelfuse Brand
Min. Order Qty:
1
Avail #:
0
 
RoHS Compliant
REACH Compliant
1+
29.1900
10+
24.8100
50+
21.8900
EACH
  • Battery isolator switch with detachable key
  • Protects operator from accidental actuation when power is shut-down for maintenance
  • Stop-key single circuit
  • Maximum load is 500 amps for 5 seconds at 12 volts DC
  • 100 amps continuous rating
  • Spare key 44077 and splash-proof cover 44078 also available
  • -13°F (-25°C) to 185°F (85°C)
Item#:
44075
Min. Order Qty:
1
Avail #:
495
 
RoHS Compliant
REACH Compliant
1+
10.3200
10+
8.2500
50+
5.1600
EACH
  • Cole Hersee 75920 Master Disconnect Switch
  • Category: Disconnect Switches
  • Manufacturer: Cole Hersee
  • Switch Type: Mechanical
  • Circuitry: SPST
  • Amp Rating: 400A
  • Voltage: 6V min to 36V MAX
  • Contact Action: On-Off
  • Contact Type: (2) 3/8" Studs
  • Waterproof and dust proof to IP67 (immersible)
  • Fits standard master disconnect mounting pattern
  • Protects vehicles and equipment 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 cut-off
Item#:
44076
Manufacturer Item:
75920
Manufacturer:
Cole Hersee-A Littelfuse Brand
Min. Order Qty:
1
Avail #:
0
 
RoHS Compliant
1+
40.5500
10+
34.4600
50+
30.4100
EACH
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Safety is of the utmost importance when it comes to electrical applications, which is why Waytek offers a wide variety of safety related electrical products, wire connectors, and switches to help keep you and your equipment safe. In instances where the battery is not easily accessible or reaching the battery becomes dangerous, the remote mounting a battery junction block inside or outside of a vehicle allows for convenient and safe jump-starts and charging.

For situations where you need to connect two parallel wires or one wire to multiple wires to complete your circuit, consider using crimp butt connectors designed to keep moisture, dust and chemicals out of the electrical connection. No matter what your electrical project requires, you’re guaranteed to find all the parts you need at Waytek Wire.