1440 Watts (about 2 hp) can cause havoc if not controlled regardless of the OBC capacity.
Why try to find a reason to use a cut-off timer that has such a high risk, likelihood and consequences? What are the benefits that would negate or overwhelm these for you to still support this?
The 12V battery power supply is another weak link that can cause severe damage inside an OBC. An old, weak or worn out, low capacity battery could cause a drop out of the holding current for the main contactors in the HV pack. This would create arcing damage or welding of the precious metal contacts.
Why try to find a reason to use a cut-off timer that has such a high risk, likelihood and consequences? What are the benefits that would negate or overwhelm these for you to still support this?
The 12V battery power supply is another weak link that can cause severe damage inside an OBC. An old, weak or worn out, low capacity battery could cause a drop out of the holding current for the main contactors in the HV pack. This would create arcing damage or welding of the precious metal contacts.