Contactor with auxillary contacts

by ismat143
Tags: auxillary, contactor, contacts
ismat143 is offline
Jan25-10, 02:32 PM
P: 9

i want to make automatic on/off the 3 phase pump with float switch and 3 phase contactor(with auxillary contacts) for my tank.

i have,
1. contactor with auxillary contacts(3 phase contactor , a1,a2 coil voltage 220volts, no and nc)
2. Float switch(single phase)
3. with this i want to put Manual On/Off switch for pump(no , nc)

i want the connection details, can anyone help?
Phys.Org News Partner Engineering news on
New ultrasound device may add in detecting risk for heart attack, stroke
Enhanced ground control system and software for small unmanned aircraft
SensaBubble: It's a bubble, but not as we know it (w/ video)
dlgoff is offline
Jan25-10, 07:34 PM
Sci Advisor
PF Gold
dlgoff's Avatar
P: 2,634
Maybe something like this? Three Phase Motor Starter
m.s.j is offline
Jan26-10, 04:21 AM
P: 219
Please refer to attached page and following descriptions.

F1: Fuses
Q11:Contactor or automatic star-delta starter
F2: Overload relay with reclosing lockout
F8: Float switch 1-pole (circuit: pump full)
S1: Changeover switch (MANUAL-OFF-AUTO)
F9: Float switch 1-pole (circuit: pump full)
M1: Pump motor a Cable with float, counterweight, pulleys and clamps
b :Storage tank
c: Pressure pipe
d :Centrifugal (or reciprocating) pump
e :Outlet
f :Suction pipe with filter
g: Water-failure monitoring by means of a float switch
h: Well

Creative thinking is enjoyable, Then think about your surrounding things and other thought products.
Attached Thumbnails

Register to reply

Related Discussions
Contactor with auxillary contact Engineering Systems & Design 1
helping in contactor Electrical Engineering 9
simulate a seal's circuit Electrical Engineering 2
Magetic contactor humming noise Electrical Engineering 2
contactor vs. relay Electrical Engineering 1