Yeovil Town through the shed
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Stall current

When a motor is prevented from rotating and its maximum rated voltage is applied, the current draw of the motor is known as its stall current.  Typically, it is safest to insure that the stall current rating of a locomotive decoder exceeds the stall current of the motor being controlled.  In case of a derailment or gear bind and subsequent motor stoppage, the decoder will not be damaged.