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PAGE 14 — ST4125G/ST6125G SUBMERSIBLE PUMP • OPERATION MANUAL — REV. #0 (11/18/10)
FLOAT SWITCHES
CB12/CB14 Control Boxes
For remote pumping applications, both submersible pumps,
require a control box (Figure 7).
The CB12 control box requires 230VAC, 3-phase input
voltage for normal operation, while the CB14 control box
requires 460VAC, 3-phase input voltage. Reference Table 3
for the desired 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 fl oat switch
interface.
Each control box will require the use of two SW-1WOPA
fl oat switches, no plug, bare wires for direct connection
to the control box. Reference Figure 21 for a schematic
reprensentation of the control box.
NOTICE
Contact Multiquip sales department to order control
boxes as listed in Table 3.
Table 3. Control Box Specifi cations
Control Box
Model No.
Used With
Pump Model
VoltageType
Heater
Size
Full Load
Amps
UL/CSA
Listed
Thermal
Overload
Protection
Float
Switch
Capability
CB12 ST-4125G
230 VAC
Three-Phase
K67 27 YES YES YES
CB12 ST-6125G
230 VAC
Three-Phase
K73 39 YES YES YES
CB14 ST-4125G
460 VAC
Three-Phase
K56 14 YES YES YES
CB14 ST-6125G
460 VAC
Three-Phase
K62 19.7 YES YES YES
Figure 7. Electrical Control Box
(Model CB12/14)
CAUTION!
HIGH
VOLTAGE!
CAUTION!
HIGH
VOLTAGE!
CB12/14
RESET
MAN
OFF
AUTO