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A Capacitor Discharge Unit (CDU) provides a reserve of charge to ensure that a good voltage is available to throw point motors.
Especially useful when several motors are thrown by one lever, setting cross-overs for example.
The unit stores up power in capacitors and when a point motor is actuated,
discharges in one big punch giving the point motor a firm and positive switching action.
Connected to points via switches or probe and studs. Prevents burnt out motors.
Input: 16v to 24v A.C