Contactors, Overloads and Dol Starters: Easy Selection Guide
Contactors, Overloads and Dol Starters: Easy Selection Guide
Contactors, Overloads and Dol Starters: Easy Selection Guide
MOTOR CONTROL
nhp.com.au
step
Follow the 3 Easy Steps to select the right contactor for your application.
or
2
While contactors are most commonly used in motor applications, they can also be used with
resistive loads such as a water heater. The ratings of these loads are referred to as nominal current.
These ratings are supplied by the manufacturer of the load. When selecting a CA 7 contactor
for resistive loads, be sure to refer to the column labelled AC 1 amps (page 6).
step
1
3
1.
Place two flat-head screw drivers in position 1 & 2.
Unclip top half by pulling the clips back (away from the contactor).
2.
Top half will spring off.
Ensure spring is in place to mount top half above the new coil 4.
Top half is now securely mounted and contactor is ready for use.
step
examples
An Electrical fitter requires an AC contactor for a motor with full load current of
11 amps, a 230 V AC rated coil and 1 x N/C contact.
AC 3
AC 3
AC 1
Motor amps
Amps
N/O
N/C
32
CA7-9-01-240V-AC
12
5.5
CA7-12-10-240V-AC
CA7-12-01-240V-AC
16
7.5
32
CA7-16-10-240V-AC
CA7-16-01-240V-AC
23
11
32
CA7-23-10-240V-AC
30
15
65
Select
contactor
rated up to
12 amps
Auxiliary contacts
230 V AC coil
standard with
CA 7 contactors
CA7-9-10-240V-AC
CA7-23-01-240V-AC
CA7-30-00-240V-AC
CA7-37-00-240V-AC
37
18.5
65
43
22
85
CA7-43-00-240V-AC
60
32
100
CA7-60-00-240V-AC
72
40
100
CA7-72-00-240V-AC
85
45
100
CA7-85-00-240V-AC
97
55
130
CA7-97-00-240V-AC
Select contactor
with 1 x N/C
auxiliary contact
The fitter also requires an AC contactor for a motor with Full Load Current of 40 amps,
a 24 V AC rated coil and 2 x N/O contacts.
AC 3
AC 3
AC 1
Motor amps
Amps
N/O
N/C
32
CA7-9-01-240V-AC
CA7-12-10-240V-AC
Select
contactor
rated up to
43 amps
Auxiliary contacts
110 V AC
240 V AC
415 V AC
CA7-9-10-240V-AC
5.5
CA7-12-01-240V-AC
16
7.5
32
CA7-16-10-240V-AC
CA7-16-01-240V-AC
23
11
32
CA7-23-10-240V-AC
CA7-23-01-240V-AC
30
15
65
CA7-30-00-240V-AC
37
18.5
65
CA7-37-00-240V-AC
43
22
85
CA7-43-00-240V-AC
60
32
100
CA7-60-00-240V-AC
72
40
100
CA7-72-00-240V-AC
85
45
100
CA7-85-00-240V-AC
97
55
130
CA7-97-00-240V-AC
Cat. No.1)
12
Fit new
coil in contactor
Cat. No.1)
To suit
Cat. No.
No. of poles
CA7-9 to CA-16
CA7-23 to CA7-37
CA7-43
CA7-60 to CA7-85
CA7-97
CA7-9 to CA-16
CA7-23 to CA7-37
CA7-43
CA7-60 to CA7-85
CA7-97
CA7-9 to CA-16
CA7-23 to CA7-37
CA7-43
CA7-60 to CA7-85
CA7-97
CA7-9 to CA-16
CA7-23 to CA7-37
CA7-43
CA7-60 to CA7-85
CA7-97
CAC7-16-24V-AC
CAC7-37-24V-AC
CAC7-43-24V-AC
CAC7-85-24V-AC
CAC7-97-24V-AC
CAC7-16-110V-AC
CAC7-37-110V-AC
CAC7-43-110V-AC
CAC7-85-110V-AC
CAC7-97-110V-AC
CAC7-16-240V-AC
CAC7-37-240V-AC
CAC7-43-240V-AC
CAC7-85-240V-AC
CAC7-97-240V-AC
CAC7-16-415V-AC
CAC7-37-415V-AC
CAC7-43-415V-AC
CAC7--85415V-AC
CAC7-97-415V-AC
1
1
2
2
Auxiliary contacts
N/O
N/C
0
1
1
0
1
1
2
0
Cat. No.
CA7-PA-01
CA7-PA-10
CS7-PA-11
CA7-PA-20
Supply aux
contact block with
CA 7 contactor
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Part
Motor amps
Motor size
(kW)
Amps
N/O
N/C
32
AC 1
CA 7-9-01-240V-AC
CA 7-12-10-240V-AC
CA 7-12-01-240V-AC
CA 7-16-10-240V-AC
CA 7-16-01-240V-AC
CA 7-23-10-240V-AC
CA 7-23-01-240V-AC
12
5.5
32
16
7.5
32
23
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Part
Auxiliary
contacts
AC 3
11
32
Cat. No. 1)
CA 7-9-10-240V-AC
30
15
65
CA 7-30-00-240V-AC
37
18.5
65
CA 7-37-00-240V-AC
43
22
85
CA 7-43-00-240V-AC
60
32
100
CA 7-60-00-240V-AC
72
40
100
CA 7-72-00-240V-AC
85
45
100
CA 7-85-00-240V-AC
97
55
130
CA 7-97-00-240V-AC
Auxiliary contacts
N/O
N/C
Suit CA 7 3)
Cat. No.
CA 7-9 to CA 7-23
CA 7-PV-S11
CA 7-30 to CA 7-97
CA 7-PV-11
All
CS 7-PV-11
CA 7-9 to CA 7-23
CA 7-PV-S22
CA 7-30 to CA 7-97
CA 7-PV-22
All
CS 7-PV-40
2)
3)
4)
Auxiliary contacts
Cat. No.
N/O
N/C
CA 7-PA-01
CA 7-PA-10
CS 7-PA-11
CA 7-PA-20
Spare Coils
Coil voltages
24 V AC
110 V AC
240 V AC
415 V AC
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Part
To suit
Cat. No.
CA 7-9 to CA-16
CA C7-16-24V-AC
CA 7-23 to CA 7-37
CA C7-37-24V-AC
CA 7-43
CA C7-43-24V-AC
CA 7-60 to CA 7-85
CA C7-85-24V-AC
CA7-97
CAC7-97-24V-AC
CA 7-9 to CA -16
CA C7-16-110V-AC
CA 7-23 to CA 7-37
CA C7-37-110V-AC
CA 7-43
CA C7-43-110V-AC
CA 7-60 to CA 7-85
CA C7-85-110V-AC
CA7-97
CAC7-97-110V-AC
CA 7-9 to CA -16
CA C7-16-240V-AC
CA 7-23 to CA 7-37
CA C7-37-240V-AC
CA 7-43
CA C7-43-240V-AC
CA 7-60 to CA 7-85
CA C7-85-240V-AC
CA7-97
CAC7-97-240V-AC
CA 7-9 to CA-16
CA C7-16-415V-AC
CA 7-23 to CA 7-37
CA C7-37-415V-AC
CA 7-43
CA C7-43-415V-AC
CA 7-60 to CA 7-85
CA C7-85-415V-AC
CA7-97
CAC7-97-415V-AC
Description
time range
0.3 - 30 seconds
1.8 - 180 seconds
Time range
0.3 - 30 seconds
1.8 - 180 seconds
Cat. No.
CZ E-7-30
CZ E-7-180
CZA-7-30
CZA-7-180
mechanical interlock
interlock only
Interlock with 2 x N/C
CM7
CM7-02
Digital input
18 - 30 V DC (10 - 15mA)
CRI-7E
Motor current
range (A)
To suit contactor
Cat. No.
0.1 to 0.16
CA 7-9 to CA 7-23
CT 7N-23-A16
0.16 to 0.25
CA 7-9 to CA 7-23
CT 7N-23-A25
0.06 or 0.09
0.25 to 0.40
CA 7-9 to CA 7-23
CT 7N-23-A40
0.09 or 0.12
0.35 to 0.50
CA 7-9 to CA 7-23
CT 7N-23-A50
0.18
0.45 to 0.63
CA 7-9 to CA 7-23
CT 7N-23-A63
0.18 or 0.25
0.55 to 0.80
CA 7-9 to CA 7-23
CT 7N-23-A80
0.25
0.75 to 1.0
CA 7-9 to CA 7-23
CT 7N-23-B10
0.37
0.9 to 1.3
CA 7-9 to CA 7-23
CT 7N-23-B13
0.55
1.1 to 1.6
CA 7-9 to CA 7-23
CT 7N-23-B16
CT 7N
0.55 or 0.75
1.4 to 2.0
CA 7-9 to CA 7-23
CT 7N-23-B20
0.72 or 1.1
1.8 to 2.5
CA 7-9 to CA 7-23
CT 7N-23-B25
1.1
2.3 to 3.2
CA 7-9 to CA 7-23
CT 7N-23-B32
Manual reset
1.5
2.9 to 4.0
CA 7-9 to CA 7-23
CT 7N-23-B40
2.2
3.5 to 4.8
CA 7-9 to CA 7-23
CT 7N-23-B48
2.2
4.5 to 6.3
CA 7-9 to CA 7-23
CT 7N-23-B63
5.5 to 7.5
CA 7-9 to CA 7-23
CT 7N-23-B75
3.7
7.2 to 10
CA 7-9 to CA 7-23
CT 7N-23-C10
5.5
9 to 12.5
CA 7-12 to CA 7-23
CT 7N-23-C12
5.5
11.3 to 16
CA 7-16 to CA 7-23
CT 7N-23-C16
7.5
15 to 20
CA 7-16 to CA 7-23
CT 7N-23-C20
17.5 to 21.5
CA 7-16 to CA 7-23
CT 7N-23-C21
11
21 to 25
CA 7-16 to CA 7-23
CT 7N-23-C25
7.5
15 to 20
CA 7-30 to CA 7-37
CT 7N-37-C20
11
17.5 to 21.5
CA 7-30 to CA 7-37
CT 7N-37-C21
11
21 to 25
CA 7-30 to CA 7-37
CT 7N-37-C25
15
24.5 to 30
CA 7-30 to CA 7-37
CT 7N-37-C30
18.5
29 to 36
CA 7-30 to CA 7-37
CT 7N-37-C36
18.5
33 to 38
CA 7-30 to CA 7-37
CT 7N-37-C38
11
17 to 25
CA 7-43
CT 7N-43-C25
15 or 18.5
24.5 to 36
CA 7-43
CT 7N-43-C36
18.5 or 22
35 to 47
CA 7-43
CT 7N-43-C47
18.5 or 22
35 to 47
CA 7-60 to CA 7 -97
CT 7N-85-C47
30
45 to 60
CA 7-60 to CA 7 -97
CT 7N-85-C60
37
58 to 75
CA 7-60 to CA 7 -97
CT 7N-85-C75
45
72 to 90
CA 7-60 to CA 7 -97
CT 7N-85-C90
Motor current
range (A)
0.02 to 0.12
0.1 to 0.5
CA 7-9 to CA 7-23
0.06 to 0.25
0.2 to 1
CA 7-9 to CA 7-23
CEP7-ED1BB
0.25 to 2.2
1 to 5
CA 7-9 to CA 7-23
CEP7-ED1CB
1.5 to 7.5
3.2 to 16
CA 7-9 to CA 7-23
CEP7-ED1DB
2.2 to 15
5.4 to 27
CA 7-9 to CA 7-23
CEP7-ED1EB
4 to 22
9.0 to 45
CA 7-30 to CA 7-43
CEP7-ED1FD
To suit contactor
Cat. No.
CEP7-ED1AB
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Part
1)
Approx. motor
kW range 1)
Motor current
range (A)
To suit contactor
Cat. No.
0.02 to 0.12
0.1 to 0.5
CA 7-9 to CA 7-23
CEP7-EEAB
0.06 to 0.25
0.2 to 1
CA 7-9 to CA 7-23
CEP7-EEBB
0.25 to 2.2
1 to 5
CA 7-9 to CA 7-23
CEP7-EECB
1.5 to 7.5
3.2 to 16
CA 7-9 to CA 7-23
CEP7-EEDB
2.2 to 15
5.4 to 27
CA 7-9 to CA 7-23
CEP7-EEEB
2.2 to 15
5.4 to 27
CA 7-30 to CA 7-43
CEP7-EEED
4 to 22
9 to 45
CA 7-30 to CA 7-43
CEP7-EEFD
11 to 45
18 to 90
CA 7-60 to CA 7-97
CEP7-EEGE
22 to 55
60 to 120
CA 7-30 to CA 7-97
CEP7-EEVE
Overload Accessories
CT7N
Front Mount
Accessory
CEP7-ERR
Side Mount
Accessory
Function
Description
To suit overload
Cat. No.
CT 7N Range
CMR7N240VAC 1)
CEP7-ERR
1)
Change control voltage to Cat. no., when ordering 24, 110 AC or 24, 48 DC.
Cat. No. 1)
CAT7N-5.5P-240-V-AC
CAT7N-7.5P-240V-AC
CAT7N-5.5R-240-V-AC
CAT7N-7.5R-240V-AC
CAT7N-5.5PM-240-V-AC
or
Cat. No.
CEP7-ED1AB
CEP7-ED1BB
CEP7-ED1CB
CEP7-ED1DB
CEP7-ED1EB
10
Cat. No.
0.13 to 0.18
0.15 to 0.25
0.23 to 0.34
0.1 to 0.16
0.16 to 0.25
0.25 to 0.40
0.35 to 0.50
0.45 to 0.63
0.55 to 0.80
0.75 to 1.0
CT7N-23-A16
CT7N-23-A25
CT7N-23-A40
CT7N-23-A50
CT7N-23-A63
CT7N-23-A80
CT7N-23-B10
0.3 to 0.48
0.9 to 1.3
CT7N-23-B13
0.38 to 0.65
0.52 to 0.8
0.72 to 1.1
1 to 1.4
1.3 to 1.7
1.6 to 2.2
2 to 2.8
2.5 to 3.5
3.3 to 5
4.3 to 6
5.2 to 8
1.1 to 1.6
1.4 to 2.0
1.8 to 2.5
2.3 to 3.2
2.9 to 4.0
3.5 to 4.8
4.5 to 6.3
5.5 to 7.5
7.2 to 10
9 to 12.5
11.3 to 16
CT7N-23-B16
CT7N-23-B20
CT7N-23-B25
CT7N-23-B32
CT7N-23-B40
CT7N-23-B48
CT7N-23-B63
CT7N-23-B75
CT7N-23-C10
CT7N-23-C12
CT7N-23-C16
CONTACTOR SELECT
IPHONE APP
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make sure you download
the NHP iPhone App called
Contactor Select which is the
digital version with added
bonuses such as one click
service support.
Now available
on the iTunes App
Store now or at
nhp.com.au
11
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