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A75R General Description
The La Marche model A75R uses proven SCR charging technology and is developed specifically for the railroad
market. It is typically used for signaling, highway crossing and motion detection systems where the battery is
cycled frequently. This filtered unit is designed and built to charge VRLA, Flooded Lead Acid and Nickel
Cadmium batteries. Some of the features that make this product unique are remote shutdown, lightning
protection and charger failure contacts, to name a few. Remote shutdown allows you to place the charger
offline for battery testing purposes. The A75R is equipped with AAR style hardware on the input and output
connections. Temperature compensation is included standard to increase the longevity of the batteries and
charger. The unit is convection cooled and the components are designed to achieve MTBF in excess of 100,000
hours.
Model Number
DC Output
AC Draw @ 100% Load
Dimensions
Weight
Amps
Volts
LA Range
NC Range
lbs
kg
A75R-10-12V-AB1
10
12
5-8
8-12
5.8 amps / 120 VAC
12” x 10” x 9”
34
15.5
2.9 amps / 240 VAC
305 x 254 x 228mm
A75R-20-12V-AB1
20
12
5-8
8-12
8 amps / 120 VAC
12” x 10” x 9”
37
16.8
4 amps / 240 VAC
305 x 254 x 228mm
A75R-40-12V-AB1
40
12
5-8
8-12
15 amps / 120 VAC
14” x 12” x 12”
58
26.4
8 amps / 240 VAC
356 x 305 x 305mm
A75R-30-24V-AB1
30
24
10-16
16-24
22 amps / 120 VAC
14” x 12” x 12”
76
34.5
11 amps / 240 VAC
356 x 305 x 305mm
*A75R-60-12V-A1
60
12
5-8
8-12
22 amps / 120 VAC
16.7” x 12” x 12”
80
36.3
427 x 305 x 305mm
*
A75R-60-12V-B1
60
12
5-8
8-12
11 amps / 240 VAC
16.7” x 12” x 12”
80
36.3
427 x 305 x 305mm
A75R-60-12V-AB1
60
12
5-8
8-12
22 amps / 120 VAC
16.7” x 12” x 12”
80
36.3
11 amps / 240 VAC
427 x 305 x 305mm
*
SINGLE AC INPUT ONLY. (120VAC OR 240VAC)
Standard Features
•
Microprocessor Controlled SCR Charging Technology
•
Single Phase AC Input 120/240V, 50/60Hz
•
Automatic AC Input Voltage Compensation ±10%
•
Complete Isolation from AC to DC
•
Lightning Protection
•
Temperature Compensation with Enable/Disable Switch
•
DC Analog Ammeter and Digital Voltmeter
•
Adjustable Current Limit from 50% to 105%
•
Filtered Output for VRLA Batteries
•
Remote Shutdown
•
Shared form “C” Contact for Charger Failure and Low Current Alarms
•
Meets AREMA specifications
•
Meets ANSI C62-41
•
3-Year Warranty
Summary of Contents for A75R
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