page 14 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
floaT swiTChes
Control boxes
For remote pumping applications, all four model submersible
pumps will require a control box (Figure 7).
For each model submersible pump there is an associated
control box. Reference Table 4 for the desired control box
and applicable heater. The heater size is determined by
the the full load amps the pump will draw.
These water-resistant control boxes provide electronic
overload protection a watertight enclosure and glands to
prevent water from leaking into the box, and a float switch
interface.
Each control box will require the use of
two
SW-1WOPA
float switches, no plug, bare wires for direct connection to
the control box. Reference Figure 20 and Figure 21 for a
schematic reprensentation of each control box.
NOTICE
Contact Multiquip sales department to order control
boxes as listed in Table 4.
table 4. Control box specifications
Control box
model no.
used With
pump mode
l
voltage,
3Ø
Heater
size
Heater
amps
running
amps
UL/CSA
listed
thermal
overload
protection
Float
switch
Capability
CB1269
ST41230
230
K69
27.7~30.1
28.6
YES
YES
YES
CB1274
ST61230
230
K74
40.2~45.5
43.0
YES
YES
YES
CB1456
ST41460
460
K56
13.6~14.5
14.3
YES
YES
YES
CB1463
ST61460
460
K63
20.6~22.5
21.5
YES
YES
YES
Figure 7. Electrical Control Box
(Typical)
CAUTION!
HIGH
VOLTAGE!
RESET
MAN
OFF
AUTO
Go
to
Discount-Equipment.com
to
order
your
parts
