Littelfuse.com/Pump-Protection
© 2020 Littelfuse, Inc.
1
Fresh Water Pumping
TABLE OF CONTENTS
SUBMERSIBLE PUMPS - OPTIMIZED PROTECTION
111-Insider-P / 231-Insider-P with Control Box ...................................... 2
Single-Phase Pump Monitor
111P / 233P / 233P-1.5 ..................................................................................5
Single-Phase Pump Monitor
235P ................................................................................................................. 7
Single-Phase Pump Monitor
Abbreviated Installation Instructions .......................................................9
111P / 233P / 233P-1.5 / 235P in Enclosure ............................................11
Single-Phase Pump Monitor in a NEMA box
SINGLE-PHASE & THREE-PHASE PUMP PROTECTION
MP8000 .........................................................................................................12
Bluetooth* Overload Relay
SINGLE-PHASE PUMP PROTECTION
77C-KW/HP (2-800 A) ................................................................................16
Programmable
77C-LR-KW/HP (1-9 A) ..............................................................................16
Low-Range Programmable
THREE-PHASE PUMP PROTECTION
777-P2 Series ..............................................................................................21
Fully Programmable Electronic Overload Relay
777-KW/HP-P2 Series ................................................................................23
Programmable Electronic Power Monitor
LIQUID LEVEL PROTECTION
460-15-100-LLS ............................................................................................32
Liquid Level Sensor Relay (DIN-rail or surface mount)
PC-XXX-LLC-CZ / PC-XXX-LLC-GM Series ............................................34
Liquid Level Control Relays (8-pin plug-in)
TIMERS AND ALTERNATING RELAYS
T10 .................................................................................................................38
Solid-State On-Delay Timer
ALT ................................................................................................................39
Alternating Relay Series
50R-400-ALT .................................................................................................41
Alternating Relay
ACCESSORIES
NEMA-3R-L Enclosure ............................................................................... 42
Metal Electric Box
Informer ....................................................................................................... 43
Hand-Held Diagnostic Tool
*Bluetooth is a trademark of its respective owner.