The Circuit Breaker Controller No. 92 was available from 1959 until 1966. Unlike the No. 91, this circuit breaker could also be used to control the direction of the train. It would also reset itself because the connection was based on the heat generated that triggers the bimetal strips to separate and break the electrical connection. Once the short was corrected and the heat dissipated the circuit would reconnect. Lionel issued the following instructions with this breaker:
Install No. 92 in the circuit between one of the transformer output posts and one of the track lockon terminals, as shown in the illustration. It does not matter which terminal of the No. 92 is connected to the transformer and which the to the lockon.
By pressing the reset button you can interrupt track power to operate the reversing unit of your locomotive. This permits direction control without changing throttle setting.
When a short-circuit occurs, the breaker will open internal switch contacts after a few seconds delay, cutting off all power to the track. After you have located and corrected the cause of the short, press the reset button and resume normal operation.
There are three variations that have to do with the packaging of this accessory:
Variation A: Came in a manila envelope that was sold separately as part No. 90-26. The contents were the controller and two No. 81-32 wires, but no instruction sheet.
Variation B: Came in a box that was offered for separate sale with instructions No. 92-22 dated 11-59. The box end for this variation is pictured above.