hello all

I have an Itasca RV on a 82 P30 Chevy van chassis. On the motor framework, passenger side, I have a solenoid that is connected to four circuit breakers. they are stamped: 12V 6A 292 (two of them), 12V 20A 380, 12V 40A 252?. They are corroded. I need to replace them.

My questions: first, are they specific to the chassis, not the RV, if so, what are they for?

second, what type are they? auto reset type 1, (total full auto reset), or type 2, (reset only after power is disconnected)? I know they are not type 3, manual reset. no reset button. Thanks for any info.