Hubbell Switch 4296 User Manual

Hubbell Industrial Controls, Inc.  
Euclid™ Lifting Magnet Controller  
4296  
Resistor Type Manual Discharge  
Specifications 4296 • March 2004 • Replaces July 1998  
Features  
ƒ Front-Wired Front-Removable components.  
ƒ Mechanically interlocked "LIFT" and  
"DROP" contactors.  
ƒ Permanently connected discharge path  
completely independent from the line.  
ƒ High-Thermal capacity resistor discharge  
path.  
ƒ Peak magnet induced voltage limited to  
600 volts.  
ƒ Long electrical contact life.  
ƒ Minimum Maintenance.  
ƒ Dribble control - Standard.  
ƒ Ventilated NEMA 3R Enclosure.  
Application  
The Euclid Type 4296 Lifting Magnet Con-  
trollers are suited for many uses from light  
scrap handling to the handling of heavy billets  
or plates. It may be used with all types and  
makes of dc lifting magnets.  
Description  
The Euclid Type 4296 Magnet Controllers  
incorporate heavy duty time proven compo-  
nents arranged to provide optimum control of  
your lifting magnets.  
A mechanically rugged high thermal capacity  
discharge resistor assembly is permanently  
connected in parallel with the magnet and  
provides a safe discharge path for the stored  
magnetic energy. With Euclid magnet con-  
trollers, induced volts cannot return to the line,  
permitting rectified power supplies to be used  
without the added expenses of special pro-  
tective loads or by-pass circuits.  
Manual Discharge  
Type Controller  
The Euclid Type 4296 Manual Discharge  
Type Lifting Magnet Controller provides for  
optimum operator control over the release of  
SYMBOL  
FUNCTION  
CONTROL FUSE  
SYMBOL  
FUNCTION  
magnet loads.  
CFU  
RR  
DR  
LR  
D
DISCHARGE RESISTOR  
REVERSE CURRENT RESISTOR  
DIODE  
FORCING RESISTOR (IF USED)  
DROP CONTACTOR  
The Manual Discharge Type Controller is  
controlled via a three (3) position master  
switch, which places the full control of the  
"Lift", "Fan" and "Clean" functions directly  
under the control of the operator. The Manual  
Discharge Type of controller is best suited for  
applications requiring accurate load control  
rather than operational speed.  
D2  
RECTIFIER, MAGNET DISCHARGE  
PATH  
D1  
1L, 2L  
LIFT CONTACTOR  
MOV  
SURGE SUPPRESSOR  
Page 1 of 2  
 

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