FYI this solenoid is clearly marked 36v.
I don't know of a 36 or 48v solenoid. Just 36 or 48v Solenoids
It is rated : 400amps continuous, 600amps surge (2 seconds)
It looks alot like the 400/1000 amp solenoids I sell ~ I had to look twice. 600a surge is a very low rating. My 200 amp MZJs are 200cont./800amp peak or surge... No wonder EV can sell so cheap