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48122

更新时间： 2024-11-20 15:13:47

品牌	Logo	应用领域
力特 - LITTELFUSE		/
页数	文件大小	规格书
2页	390K
描述
For vehicles with two batteries, these devices electrically isolate the batteries to prevent the b

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48122 数据手册

DIODE BATTERY ISOLATORS SERIES

12-36 V Diode Battery Isolators

48051

48090

48122

48161

48162

Description

Speciﬁcations

Max Continuous Voltage:

Max Continuous Current Rating:

Ingress Protection:

12-36 V

75-200 A

IP66

Our 12-36 V Diode Battery Isolators are designed for

vehicles with two batteries. These devices electrically

isolate the batteries to prevent the battery with the

higher charge from draining into the battery with the

lower charge. In addition, both batteries can be charged

simultaneously from one source.

Housing:

Aluminum

This series offers three types of diode battery isolators:

3-stud, 4-stud, and models that use Schottky diodes.

Applications

• HeavyTrucks

3-Stud Battery Isolators vs. 4-Stud Battery Isolators

• Emergency Vehicles & Ambulances

• RVs & Campers

The amperage rating of each item is the maximum

alternator rating. Most alternators on new vehicles have

an integral electronic voltage regulator that requires the

use of the 4-stud battery isolator. The small 4th stud is for

connection to a circuit controlled 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.

Features and Beneﬁts

• General-purpose battery isolators for 12-36 V DC

negative ground systems

• Models are available with continuous current ratings

ranging from 70 A to 250 A

• Electronic components are embedded to give

excellent protection from adverse conditions, such as

contamination and vibration

Schottky Diode Battery Isolators

• All models withstand dust and water to an IP66 rating

• Integral heat sink provides efﬁcient heat dissipation

Models are available with Schottky diodes which comply

with the KKK-A-1822B ambulance speciﬁcation. This allows

them to be used to isolate medical equipment batteries

from vehicle batteries.

Per Leg Ratings

Battery isolators have a “per leg” rating which indicates

the maximum current it can deliver to either battery. All

Littelfuse Cole Hersee brand battery isolators have a per

leg rating equal to half the alternator rating. For example,

models with a rating of 75 A have a per leg rating of 37.5 A

per leg.

Web Resources

Download 2D print, installation guide and technical

resources at: littelfuse.com/BatteryIsolators

Littelfuse.com

102623-A

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