16 Softstarters | 1SFC132005C0201, rev.F
PSS18/30...PSS44/76
PSS50/85...PSS72/124
Softstarter. Type
Normal start
In-line connected
PSS18/30
PSS30/52
PSS37/64
PSS44/76
PSS50/85
PSS60/105
PSS72/124
(400 V) kW
7.5
15
18.5
22
25
30
37
IEC, Max. A
18
30
37
44
50
60
72
(440-480 V) hp
10
20
25
30
30
40
50
UL, Max FLA
18
28
34
40
47
56
67
400 V, 40º C
Using MCCB type 1
coordination will be
achieved
MCCB (50kA), type
T2S160
To achieve type 2 coordina-
tion semi-conductor fuses
must be used
Fuse protection (65kA), Semi-conductor fuses, Bussmann, type
170M1564
170M1566
170M1568
170M1569
170M1570
170M1571
Suitable switch fuse for
the recommended semi-
conductor fuses
Switch fuse, type
OS32GD03P
OS63GD03P
OS125GD03P
Overload protection is used
to protect the motor from
over heating
Thermal overload relay, type
TF42DU
TA75DU
The line contactor is not
required for the softstarter
itself but often used to
open if OL trips
Line contactor, type
AF16
AF30
AF38
A50
A63
A75
The by-pass contactor will
reduce the power loss of
the softstarter. All softstar-
ters can be operated
without by-pass
By-pass contactor, type
AF9
AF16
AF26
AF30
A40
A50
Must be used if current limit
function is required
Current transformers, type
PSCT-30
1 turn
PSCT-40
1 turn
PSCT-50
1 turn
PSCT-60
1 turn
PSCT-75
1 turn
PSCT-100
1 turn
PSS – The flexible range
Overview
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