AAC dc current and voltage products are aboard mass transit and heavy transport rail systems.

High accuracy applications, such as current transducers to monitor traction motor forward and reverse regenerative brake current.

High sensitivity dc current detectors, with built-in relay and field adjustable trip point control, sense ground fault problems anywhere in the system.

DC voltage detectors monitor third rail power applied to individual cars. The output relay responds when the voltage exceeds the field adjustable trip point setting.

Clamp on, split yoke dc current transducers provide an analog output signal(4 to 20mA) directly proportional to the isolated input current. These units monitor critical fan and blower motor currents in locomotives.