COLE HERSEE part description

Cole Hersee Battery Selector Switches energize either or both of two batteries.
Master disconnect switches prevent tampering of theft when equipment is unattended.
Battery isolators prevent the battery with the higher charge from draining into the battery with the lower charge.
Battery-related accessories include remote battery jumper terminals, feed-through studs, lockout lever kits and face plates.
All products listed in this section can be found in Section J of the Cole Hersee D-275 CATALOG.
  • For vehicles with two batteries, these devices electrically isolate the batteries to prevent the batteryA collection of voltaic cells grouped together to provide higher voltage and/or higher current than a single cell. The battery is a common DC power source, especially for vehicles or equipment that is used remote from the domestic power supply.
  • Emergency vehicles and utility vehicles often have dual battery systems because of added power demand. Such systems necessitate the use of a Battery Selector Switch or a Low Voltage Disconnect Switch. with the higher chargeThe accumulation of electrons producing an electrostatic charge. In common use it often refers to energy content of a battery. from draining into that with the lower charge. In addition, both batteries can be charged simultaneously from one source. Use general purpose battery isolatorA solid state device that allows for the alternator to charge multiple batteries, and to control drain from one battery to the other. See 'Battery Isolators' and 'Smart Battery Isolator' #48530.s for 12-36V DC negative ground systems.
  • The electronic components are embedded to give excellent protection from adverse conditions, such as contamination and vibration. The integral heat sink provides efficient heat dissipation. The amp rating of each item is the maximum alternator rating. Most alternators on new vehicles have an integral electronic voltageElectrical pressure, the force that causes current to flow through a conductor. Voltage must be expressed as a difference of potential between two points since it is a relational term. Connecting both voltmeter leads to the same point will show no voltage present although the voltage between that point and ground may be thousands of volts.
  • Calculations often involve Ohm's Law, q.v. regulator that requires the use of the 4-stud battery isolator. The small 4th stud is for connection to a circuitA closed path (or loop) of electrically (or electromagnetically) connected components or devices that is capable of current flow. Typically consists of loads, sources, conductors, and circuit protection (circuit breakers and fuses). The path must be continuous and closed. switched by the ignition switch. The newer alternators were first introduced by Delco and are therefore sometimes called ‘Delcotron-type alternators’. A 4-stud battery isolator can be used with older pattern alternators (in this case the 4th stud will remain unconnected), but a 3-stud battery isolator cannot be used with the Delcotron-type alternator.
  • Battery isolators also have a ‘per leg’ rating which indicates the maximum current it can deliver to either battery. All Cole Hersee battery isolators have a per leg rating equal to half the alternator rating. Thus the 48162 with a rating of 200A has a per leg rating of 100A per leg.
  • 200A at 12V DC, 12-36V.
  • Terminations: three 5/16" (7.9mm) studs and one No.10 stud.
  • Four 9/32" (7.2mm) diameter mounting holes.
  • Size: 8 1/2"L x 4 3/16"W x 3 13/32"H (215.0 x 122.2 x 86.5mm).
Description Battery Isolator
Details Isolates loads of 2 batteries, allows charging from 1 source
UL listed not listed
Rating 12-36V DC; 200A max. alternator rating; negative ground electrical system only
Terminals three 5/16" studs and one #10 stud
Sealing Fully sealed
Size 8-1/2"L x 4-3/16"W x 3-13/32"H
Installation four 9/32" dia. Holes
Min qty No

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Cole Hersee® is highly valued in the heavy duty truck industry. It is a leading manufacturer of heavy-duty battery master switches that are widely used as OE equipment by leading heavy-duty vehicle manufacturers. These switches are essential safety components for trucks as they help prevent theft, tampering, electrical fires, and battery drain. Founded in 1924, Cole Hersee is committed to improving vehicle safety by partnering with ECCO Safety Group Australia (ESGA) to establish and implement safety standards for trucks that drive onto mining sites. Its products are also manufactured in its ISO 9001:2008-certified facility and undergo strict testing to ensure safety and reliability.

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