The C40 (40 Amp controller) has long been the main stay of Xantrex’s
charge controllers because of it versatility and reliability. The C40 is
a 100% solid state, microprocessor-driven controller which is UL and
cUL listed. The C40 controller may be configured for solar panel battery
charging, or DC load control (e.g. low voltage disconnect) or DC
diversion operation (e.g. wind turbines and hydro generators). Whatever
the charging source, the C40 Xantrex Charge Controller is sure to meet
your DC controller needs.