3
Replacement of coil
Fig. 3: Contactor – Relay Connection
Table A:
Motor
Rating
At 415V 3ph 50Hz
Starter Type
Relay 3UW51
Back-up Fuse Rating
Cu
Cable
(mm
2
)
size
Max. Full Load Current (Amp)
HP
kW
Range
Code
##
HRC
type
3NA
7
Rewirable
3Ph, 415V,
4P Squirrel
Cage IS
8789:1996
Table 4
3Ph, 415V,
2P
Submersible
motor IS
9283:1995
Table 2
1Ph, 240V,
CSIR or
Split-Phase IS
996-1979
Table 9
0.33
0.25
3TW7291-1A* 64
0.63-1
0J
2A
36 SWG
1
–
–
3.8
0.75
0.55
3TW7291-1A* 66
1-1.6
1A
6A
34 SWG
1
1.7
–
7
1
0.75
3TW7291-1A* 68
1.6-2.5
1C
6A
27 SWG
1
2.2
–
7
1.5
1.1
3TW7291-1A* 69
2-3.2
1D
10A
26 SWG
1
2.9
3.25
13
2
1.5
3TW7291-1A* 71
3.2-5
1F
16A
25 SWG
1
3.8
4.5
18
3
2.2
3TW7291-1A* 72
4-6.3
1G
16A
24 SWG
1.5
5.1
6.5
–
5
3.7
3TW7291-1A* 74
6.3-10
1J
16A
21 SWG
1.5
8.1
10
–
7.5
5.5
3TW7291-1A* 75
8-12.5
1K
25A
19 SWG
1.5
11.4
14.5
–
7.5
5.5
3TW7291-1A* 77
10-16
2A
25A
18 SWG
2.5
–
–
–
10
7.5
3TW7291-1A* 78
12.5-20
2B
32A
18 SWG
4
15.4
19.5
–
* Code for operating coil voltage, 50 Hz (B for 200-400V, W for 415V)
Spare list
Sr.
No.
Description
Order No.
1
Contactor for 200-400V
3TS30-10-0AZ608K
2
Contactor for 200-400V
3TS32-10-0AZ608K
3
Contactor for 415V
3TS30-10-0AR008K
4
Contactor for 415V
3TS32-10-0AR008K
5
Relay
3UW51 02-##
6 Coil for 200-400V
3TY7 403-0AZ6
7 Coil for 415V
3TY7 403-0AR0
8
1NO Contact Block
3SB54200B
9 ‘ON’ & ‘OFF’ Push Button
#
# – contact sales
Raja
+
Direct-on-line Starter
(For Single Phase connection)
Wiring Diagram for Single-Phase Motors
Note: Connect 3/L2 to 2/T1 by cable of suitable size. (Max. 4mm
2
)
Hook on relay for
engagement
Contactor
outgoing terminals
