38 Softstarters | 1SFC132005C0201, rev.F
PST(B) – The advanced range
Overview
PST30 ... PST72
PST85 ... PST142
Softstarter. Type
Normal start
In-Line connected
PST30
PST37
PST44
PST50
PST60
PST72
PST85
PST105
PST142
(400 V) kW
15
18.5
22
25
30
37
45
55
75
IEC, Max. A
30
37
44
50
60
72
85
105
142
(440-480 V) hp
20
25
30
40
40
50
60
75
100
UL, Max FLA
28
34
42
54
60
68
80
104
130
400 V, 40 ºC
Using MCCB only, type 1
coordination will be achieved.
MCCB (50kA), type
T2S160
T3S250
To achieve a type 2 coordina-
tion, semi-conductor fuses
must be used.
Fuse protection (65kA), Semiconductor fuses, Bussmann, type
170M1566
170M1568
170M1569
170M1570
170M1571
170M1572
170M3819
170M5809
Suitable switch fuse for re-
commended semi-conductor
fuses.
Switch fuse, type
OS32GD03P
OS63GD03P
OS125GD03P
OS250D03P OS400D03P
The line contactor is not
required for the softstarter
itself but often used to
open if OL trips
Line contactor, type
AF30
AF38
A50
A63
A75
A95
A110
A145
Overload protection is used
to protect the motor from
over heating
Electronic overload relay
Built-in
The by-pass contactor will
reduce the power loss of the
softstarter. All softstarters
can be operated without
by-pass
By-pass contactor, type
AF16
AF26
AF30
A40
A50
A63
A95
A50 ... A300 might be replaced by AF50 ... AF300.
The table above is an overview of possible combinations of devices.
Complete coordination tables are available at
www.abb.com/lowvoltage