AUXILIARY EQUIPMENT
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7-18
SIG-00-22-02 JUNE 2022 (Revised September 2022)
Version: B.1
7.4
AC Track Circuit/Cab Signal Filter, 7A417-X
7.4.1 Equipment Description, 7A417-X
The Cab Signal Filter, 7A417-X, is designed for use in a territory where 60, 90, 100, or 200-Hz
cab signal or AC Track Circuits are used.
7.4.2 Mounting Dimensions, 7A417-X
The 7A417-X filter assembly can be configured according to signal frequency and relay
mounting base type as indicated in Table 7-2 For mounting dimensions see Table 7-3. Due to
the multiplicity of configurations and dimensions, refer to the different mounting dimensions.
Table 7-2 Cab Signal Filter Relay Base Manufacturer-Frequency Cross-Reference
7A417-X DASH NUMBER TAB CHART
RELAY BASE
CONFIGURATION
FREQUENCY
100 HZ
60 HZ
200 HZ
90 HZ
Transcontrol
-01
-11
-21
-31
U. S. & S. (Ansaldo)
-02
-12
-22
-32
Safetran™
-03
-13
-23
-33
Mounting Dimensions for the Cab Signal Filter, 7A417-X assembly are delineated in Table 7-3:
Table 7-3 Cab Signal Filter Dimensions
Dash Number
Dimensions
-01, -02, -03, -11, -12,
-13, -31, -32, -33
7.75 inches (19.69 centimeters) high
-21, -22, -23
5.0 inches (12.70 centimeters) high
-01, -11, -21, -31
6.75 inches (17.15 centimeters) wide
9.0 inches (22.86 centimeters) deep
-02, -12, -22, -32
4.94 inches (12.55 centimeters) wide
8.00 inches (20.32 centimeters) deep
-03, -13, -23, -33
4.94 inches (12.55 centimeters) wide
9.4375 inches (23.97 centimeters) deep
Weight: 4 pounds, 8 ounces (2.04 kilograms) (average)