Alltrax AC1 - Contactors (Solenoids); Heavy Duty 400 A Requirement

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AC OPERATORS MANUAL
Contactors (Solenoids)
The solenoid is the primary disconnect of the
battery pack in the case of the an emergency. In
  ordertobeeective,thesolenoidneedstobe
properly rated for the current that will be drawn
from the batteries. It is VERY important that the solenoid be rated
correctly. It is the only way to disconnect the batteries from the
motor/controller loop in case of a failure. Too small of a solenoid
increases the likelihood that the contacts will weld together and not
be able open.
When installing a new controller, Alltrax recommends the OEM
solenoids be replaced with a heavy duty version. See below for
suggested sizing of solenoid replacements.
As a regular part of a preventative maintenance plan, solenoids
should be replaced every 3-5 years.
Heavy Duty 400A
(800-1000A inrush)
A heavy duty solenoid is
required when using any of
the AC1 controllers. You
need a minimum of 400A
continuous and 800A inrush
rating.
Recommended Models
MZJ400 (Shown)
SW200 (Albright)
SOL600