Ok going back to my post (#1814) about winch solenoids. I finally heard back from Pierce Arrow about their solenoid.
Pierce Arrow Single Solenoid
This is what they received from the manufacturer about the duty cycle...
5.3.1 Under working condition within electric current 450A, switch on one pole pass through for 5 seconds, then switch to the opposite pole pass 5 seconds, that being considered as one test circle, proceed the test except paused when temperature reach to 150℃. The test could be passed if test circles were more than 1000 times without failure.
5.3.2 Under working condition within electric current 450A, switch on one pole pass through for one minute, then switch to the opposite pole pass through one minute, that being considered as one test circle, proceed the test 10 circles. The test could be passed if tested relay was no failure.
5.3.3 Under working condition condition within electric current 450A, switch on one pole pass though for 2 minutes then paused 4 minutes, then switch to the opposite pole pass though 2 minutes. The test could be passed if tested relay was no failure.
It looks like it can take 2 minute pulls at 450 amps. That's a long time to be pulling with a M12000 at full capacity. Anyway I'm ordering a couple today.
Larry you can have my entire Warn solenoid pack from my big winch, if you want it. I know you have at least one solenoid that needs changing