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Westmaster Contactor Selection Guide

    UA11 Contactor UA22 Contactor U030 Contactor U055 Contactor U090 Contactor U200 Contactor U400 Contactor
Contactor
UA11
UA22
U030
U055
U090
U200
U400
Ith open
(A)
32
60
70
130
200
400
730
AC1
(A)
25
55
65
120
180
380
700
AC2
(A)
22
44
60
105
170
330
650
AC 3 Duty
220V
(KW)
5.9
12.5
17
30
50
100
200
(A)
22
44
60
101
168
325
626
415V
*Note 1
(KW)
11
22
30
55
90
184
400
(A)
22
44
60
105
165
325
646
440V
(KW)
12.5
26
35
65
100
200
420
(A)
22
44
60
105
162
321
646
550V
(KW)
9.5
15
27
37
90
200
400
(A)
14.5
20
37
52
117
260
510
AC4 Duty
415V
(KW)
5.5
8
16
33
59
110
245
(A)
11
15
30
60
105
200
425
440V
(KW)
6
8.5
17
35
60
125
260
(A)
11.5
15
30
60
105
200
425
AC5a (Lamp)
(A)
19
39
54
95
153
300
580
AC5b (Lamp)
(A)
18
35
48
84
136
264
520
AC6b (Capacitor)
(A)
16
27
39
63
110
215
350
KVAr
@415/440V
11.5
19.3
28
45
78
155
255
Coil (Inrush)
(VA)
80
100
170
245
700
1500
3000
Coil (Sealed)
(VA)
12
12
24
22
140
250
420
Mechanical Life
(Million Operations)
10
10
10
10
5
5
3
Max. Aux. Contacts
6
9
8
8
8
8
8
Short Cct MAx. Fuse
32-50kA, Type 2 (* Note 2)
50
80
125
200
315
450
800
Operating Time mS
Energised
8—14
8-14
14-27
16-32
35-50
55-95
40-70
Operating Time mS
De-energised
7—10
7-10
5-15
6-17
17-23
16-20
18-25
 

*Note 1
415V ratings are shown as the contactors max AC3 ratings. The motor KW ratings have been rounded down to the nearest metric frame size.

*Note 2
Short Circuit Co-ordination—max fuse ratings for Type 2 pass at 32-50kA prospective current.

 

Notes

  1. Rating are valid over a frequency range of 40-60 Hz, for other frequencies consult the sales office.
  2. Rating is based on ambient of 60oC.
  3. Rated insulation voltage (Ui) is 660V for all devices.
  4. Lamp switching : AC5a (IEC 947) - Discharge Lamps, AC5b (IEC 947) - Incandescent Lamps.
  5. Capacitor switching AC6b (IEC947) : Ratings listed are for prospective current of 20kA at the capacitor installation. For other values please contact the sales office.
  6. Coil consumption is listed in apparent power (VA). To determine the current at any particular voltage use the following formula : I = VA/V

 

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