Battery Master Switches

For over forty years Cole Hersee has been manufacturing heavy duty battery master switches that have been installed as OE equipment by leading manufacturers of heavy duty vehicles.

Battery master switches shut down a vehicle’s electrical system by cutting off current from the battery. They are designed to help prevent tampering, theft, battery drain and electrical fires.

Battery master switches are available with brass or plated steel cases and are actuated by lever or hencol key. Contacts are either silver or copper. O-rings feature in the operating shaft of some models for additional moisture and dirt protection.

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Battery Master Switches
75930 Series

With a patented weld breaker safety feature and integrated lockout/tagout, the 75930-Series Battery Master Disconnect Switch with Auxiliary Contact is designed for safely cutting off battery power to all electrical systems aboard heavy-duty vehicles and equipment used in mining, agriculture, construction, and transportation. This dual-pole, single-throw (DPST) manual battery disconnect switch is constructed with a robust engineered polymer housing, offering a contemporary design that stands up to the harsh conditions typically found in commercial vehicle environments. Carrying an IP67/IPX9K rating, the switch is protected against dust, debris, and water.

Battery Master Switches Lock-out Boxes and Brackets:
– ECCO – 759AS-01 Lockout Box
– ECCO – 759BKT1 Right Angle Bracket
– ECCO – 759BKT2 Right Angle Bracket
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Battery Master Switches
880175 – TR Series

Cuts all battery power from vehicle electrical systems with applications needing switching of two circuits, or both positive and negative. 500A continuous current rating for each of the two circuits (using 2 x 4/0 input and 2 x 4/0 output cables). Can be used to switch two vehicle voltage circuits simultaneously (24V and 12V). Disconnect a battery or multiple batteries, in either the positive or the negative line.
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Battery Master Switches
Battery Master Switch 75910 DPST On/Off

Australia’s most reliable Battery Master Switch was developed by Cole Hersee in conjunction with BAE and mining giant BHP Billiton, to service a specific requirement.

The Cole Hersee 75910 is now spec’d in for all vehicles entering a BHP Billiton mine site.

Battery Master Switches Lock-out Boxes and Brackets:
– ECCO – 759LO-01 Lockout Box
– ECCO – 759BKT1 Right Angle Bracket
– ECCO – 759BKT2 Right Angle Bracket
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Battery Master Switches
Battery Master Switch Off/On Faceplate

Faceplate to be used with battery master switches.
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Battery Master Switches
Battery Master Switch 75920 SPST On/Off

Provides a reliable power disconnection and safety cutoff that protects the vehicle against tampering, theft and battery drain. Protects personnel from electrical hazards during service.

For use on all vehicle electrical systems such as heavy truck, off-road, construction, material handling, refuse collection, marine and more.
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Battery Master Switches
24024BX – CAT OEM Master Switch SPST On/Off

This Cole Hersee battery and field master switch will disconnect the battery and the alternator or generator field circuit.

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Battery Master Switches
M290-05BX – Marine Battery Master Switch DPST On/Off

This marine grade battery master switch will disconnect the battery and the alternator or generator field circuit.
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Battery Master Switches
M750 – Dual Battery Switch Selector And Disconnect

This dual battery selector/master disconnect switch will suit any vehicle that needs to use two batteries where one battery is used for starting the engine, while the other is used to power auxiliary loads. UL rating 707B .

This is a common situation in trucks, boats, RVs, police and rescue vehicles, and in ambulances and fire equipment.

A selector switch allows use of the first battery, the second battery, or both batteries simultaneously. This provides back-up starting power in an emergency. Either or both batteries can be selected for energizing.

These switches combine the functions of Battery Selector and Master Disconnect Switches to give four battery power options:
Power cut off at the source. • Power On, Battery 2. • Power On, Battery 1. • Power On, both Batteries.

Battery selector switches provide a positive battery disconnect, which has many advantages:
• It gives a reliable shutdown of power during maintenance.
• The version with the key protects against theft of the vehicle, when unattended.
• It helps protect against electrical fires, when the vehicle is not in use, and minimizes battery drain.

Electrical Ratings Labeled UL 707B. Rating: 500A intermittent, 310A continuous, 6-36V DC Electrical ratings on UL labels are conservative.
Use with either alternators or generators. Make before break design permits operation through the three On positions with the engines running. Engines should always be shut down before turning to Off.
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Battery Master Switches
Dual Battery Key Switch Select Discon

This removable key dual battery selector/master disconnect switch will suit any vehicle that needs to use two batteries where one battery is used for starting the engine, while the other is used to power auxiliary loads. UL rating 707B .

This is a common situation in trucks, boats, RVs, police and rescue vehicles, and in ambulances and fire equipment.

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Battery Master Switches
Dual Battery Switch Selector And Alt Field

This dual battery selector/master disconnect switch will suit any vehicle that needs to use two batteries where one battery is used for starting the engine, while the other is used to power auxiliary loads. UL rating 707B .

This is a common situation in trucks, boats, RVs, police and rescue vehicles, and in ambulances and fire equipment.

Alternator field disconnect circuit switch prevents possible alternator diode failure if the switch is accidentally turned
to Off with the engines running.
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Battery Master Switches
Battery and Field Master HD DPST On/Off

This Cole Hersee battery and field master switch will disconnect the battery and the alternator or generator field circuit.
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Battery Master Switches
74904 Battery and Field Master Silver On/Off

This Cole Hersee battery and field master switch will disconnect the battery and the alternator or generator field circuit.

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Battery Master Switches
75912BX – Dual Battery Master Switch Main 4 Studs

This Cole Hersee 4 battery stud master switch will disconnect the battery and the alternator or generator field circuit.

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Battery Master Switches
Battery Field Master Silver Key On/Off

This Cole Hersee battery and field master switch will disconnect the battery and the alternator or generator field circuit.

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