Hubbell Electric Heater Company " SE " - Manual (Page 7)

7
MAGNETIC CONTACTOR
The magnetic contactor(s) is a heavy-duty resistive load type rated for 100,000 cycles. The contactor
supplies power to the heating element(s) and is sized based on the resistive load (non-inductive) rating
of the circuit. The contactor supplies power only when the thermostatic switch is engaged, thereby
pulling in the contacts until the desired temperature is reached. At this point, the contacts will drop
out, which in turn disconnects power from the elements.
OUTER SHELL AND INSULATION
The tank is encapsulated in 2-inch thick polyurethane foam insulation. The insulation is protected by a
high impact non-corroding colorized composite protective jacket.
OPTIONS
The following optional features may be included in your water heater. Reference included drawing
specific to your heater for further details.
Low Water Cut-Off
Used as a safety device, the electronic low water cut-off is
used to detect a low water situation and disengage the
operating coils in the magnetic contactor(s). Once the
condition is remedied, the low water cut-off switch is
automatically reset.
Low Water Cut-Off Probe Low Water Cut-Off Relay