Power Shield™ II
Solid State, Auto-Reset, 4 Amp Power District Circuit Breaker.

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User Manual, revision 17-Jun-98.

Use:
The breaker provides fast sectionalizing for model railroad track power and self-recloses to provide convenient operation. It should not be used for primary fuse protection of track power sources (which may provide high fault current). It works with DCC power and well-filtered DC power with a voltage of at least 10 Volts, but will not work with 60 Hz (low frequency) AC power sources or low voltage DC.

Features:
The breaker is fully solid-state and provides fast interruption when the trip current is reached (about 4 Amps). Reclose is automatic after about 2 seconds. If the circuit still draws trip current, the breaker retrips, continuing this process until the problem is cleared. Positive visual indication of trip is provided by an LED (on during trip).

Connection (see board layout below for connector locations):

Note :
On some boards J1, J3 and J2 were mismarked as B3, B3 and B3. Use this diagram to verify proper terminal designation.

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