Hubbell CR User Manual

 

 

8 

 
TEMPERATURE HIGH LIMIT SWITCH 
As a safety device, an immersion high temperature cut-off switch with manual reset, adjustable through 
a range of 100° - 240° F, is provided. The high limit must be manually reset thereafter to restart the 
heater. Optionally a 1/16 DIN digital controller may be used as a high-limit. 
 
 
 
 
 
Manual Reset 

   
       
 
           
                                                                         
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) based on the resistive load (non-inductive)  of  the  heater 
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. 

 
 
 
 
 
 

 

FUSED LOW VOLTAGE TRANSFORMER 
A fused low voltage transformer may be supplied. This option 
is used to step down higher voltages to 120-volt for safety 
when working with control circuits.