
1SFC132005C0201, rev.F | Softstarters 17
PSS85/147...PSS142/245
PSS175/300...PSS300/515
Softstarter. Type
Normal start
In-line connected
PSS85/147
PSS105/181
PSS142/245
PSS175/300
PSS250/430
PSS300/515
(400 V) kW
45
55
75
90
132
160
IEC, Max. A
85
105
142
175
250
300
(440-480 V) hp
60
75
100
125
150
200
UL, Max FLA
85
105
125
156
225
248
400 V, 40 ºC
Using MCCB type 1
coordination will be
achieved
MCCB (50kA), type
T2S160
T3S250
T4S320
T5S400
To achieve type 2 coordina-
tion semi-conductor fuses
must be used
Fuse protection (65kA), Semiconductor fuses, Bussmann, type
170M1572
170M3819
170M5809
170M5810
170M5813
170M6813
Suitable switch fuse for
the recommended semi-
conductor fuses
Switch fuse, type
OS125GD03P
OS250D03P
OS400D03P
OS630D03P
Overload protection is used
to protect the motor from
over heating
Thermal overload relay, type
TA110DU
TA200DU
TA450DU
The line contactor is not
required for the softstarter
itself but often used to
open if OL trips
Line contactor, type
A95
A110
A145
A185
A260
A300
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
A50
A63
A95
A145
A210
Must be used if current limit
function is required
Current transformers, type
PSCT-125
1 turn
PSCT-150
1 turn
PSCT200
1 turn
PSCT-250
1 turn
PSCT-400
1 turn
PSS – The flexible range
Overview
Heavy duty
Quick guide for selection
Normal start Class 10
Heavy duty start class 30
Ordering - see page 18 - 19
Ordering - see page 20 - 21
Typical applications
• Bow thruster • Centrifugal pump
• Centrifugal fan
• Conveyor belt (long)
• Compressor
• Conveyor belt (short)
• Crusher
• Mill
• Elevator
• Escalator
• Mixer
• Stirrer
If more than 10 starts/h
!
Select one size larger than the standard selection
How to select correct size
By using the guide here, you can quickly
select a suitable softstarter for the most
common applications.
If a more precise selection is required,
you can use the softstarter selection tool
available at
www.abb.com/lowvoltage