© Siemens 2011
Distribution blocks 5ST250
SENTRON Protection, Switching, Measuring and
Monitoring Devices
Distribution blocks are used to realize single-, two-, three- and four-phase systems up
to a rated current of 400 A. This enables to split power supply circuits in several load
circuits with different cable cross-sections.
High thermic and mechanical
robustness
Distribution blocks are made of thermoplastic with electrical and mechanical
parts, which allows a usage under high
thermic and mechanical load according to
IEC 60947-7-1.
7
Answers for infrastructure.
Highlights
7
Fast mounting on DIN-Rail with click
connection or on mounting plate with
2 x M5 screws
7
Place saving
7
Safety because of IP20 degree of protection and no cap to open or remove
© Siemens 2011
Distribution blocks
5ST250
■ Technical specifications
5ST2 501
Standards,
Certifications
IEC 60947-7-1
Degree of Protection
IP20
Poles
4
Approved cable
Copper
5ST2 502
5ST2 503
Conductor cross-section
• Inputs per pole
- Solid/stranded to IEC
mm²
1x1.5 … 16/2.5 … 16
1x6 … 25/6 … 35
1x10 … 35/10 … 50
mm²
--
1x6 … 25/6 … 35
--
Large
Small
mm²
mm²
8x1.5 … 10/2.5 … 10
--
2x1.5 … 10/1.5 … 16
5x1.5 … 6/1.5 … 6
3x6 … 25/10 … 35
8x1.5 … 16/2.5 … 16
Neutral Large
Small
mm²
mm²
---
6x1.5 … 10/1.5 … 16
4x1.5 … 6/1.5 … 6
---
lb/in
Nm
13.5
1.5
PZ2
13.5
1.5
PZ2
17.5
2
Allen key (5mm)
lb/in
Nm
7.2
0.8
PZ1
13.5
1.5
PZ2
13.5
1.5
PZ2
lb/in
Nm
----
7.2
0.8
PZ1
13.5
1.5
PZ2
V
500
690
500
• Max Amp Rating
• Rated peak withstand current (Ipk)
• Rated short-time withstand current (Icw 1s)
A
kA
kA
80
21.6
3
125
24
4.2
160
20
6.2
Block Dimension (D x H x W)
mm
88x49x86
75x49x45
160.5x90x50
Neutral
• Outputs per pole
- Solid/stranded to IEC
Screw torque
• Input
Fitting connection
• Output
Large
Fitting connection
Small
Fitting connection
Operational voltage
• IEC, max
Overcurrent protection fuse
2
Siemens · 2011
© Siemens 2011
Distribution blocks
5ST250
UL types
5ST2 504
5ST2 505
Standards,
Certifications
UL 1059 / UL 486E / IEC 60947-7-1
UL File Nr. E80027 / XCFR2
C22.2 No158 -1987 / XCFR8
Degree of Protection
IP20
Poles
1
Approved cable
Copper
Typ wiring
Factory and field wiring
Pressure wire connector
• Front/Back
5ST2 507
5ST2 508
5ST2 511
UL 486E / IEC 60947-7-1
UL File Nr. E80027 / XCFR2
Conductor cross-section
• Input
- Solid and Stranded to UL
Large
AWG
1x8 … 4
1x8 … 2
1x8 … 2 / 0
mm²
2.5 … 16
10 … 35
10 … 70
Small
AWG
mm²
---
1x14 ... 4
2.5 ... 25
---
TOP
AWG
mm²
4x14 … 10
2.5 … 6
6x14 … 4
2.5 … 16
6x14 … 41)
2.5 … 251)
- Solid and Stranded to UL
- Solid and Stranded to IEC
Middle
AWG
mm²
---
- Solid and Stranded to UL
- Solid and Stranded to IEC
Bottom AWG
mm²
- Solid and Stranded to IEC
- Solid and Stranded to UL
- Solid and Stranded to IEC
• Output
- Solid and Stranded to UL
- Solid and Stranded to IEC
1x2 … 4 / 0 1)
35 … 120
1)
4x14 … 6
1.5 … 16
1x3 /
0 … 350 MCM
95 … 185
4x10 … 14
2.5 … 6
4x14 … 8
1.5 … 10
3x8 … 4
2.5 … 16
---
2x14 … 2 / 1x14 … 6
2x6 … 35 / 1.5 … 16
lb/in
Nm
13.5
3
31
3.5
Allen key (4mm)
lb/in
Nm
13.5
3
PZ2
17.5
2
31
3.5
Standard screwdriver
lb/in
Nm
7.2
0.8
PZ1
----
31
3.5
Standard screwdriver
A
80
115
160
230
310
V
V
600
690
125
160
250
350
30
4.4
11
51
21
66x49x27
74x49x27
92x35x49
96x49x45
with cable up to
16mm²
With connector or side access for
-cable up to
parallel connec2)
16mm²
tion with copper
bar
(max. 16 x 5 mm)
Screw torque
• Input
Fitting connection
• Output
Large
Fitting connection
Small
Fitting connection
Amper per pole, max.
35.7
5
Allen key (5mm)
170
19
Allen key (6mm)
230
25
Allen key (8mm)
Operational voltage
• UL, max.
• IEC, max.
Overcurrent protection fuse
•
•
•
•
•
Required class
Max Amp Rating
SCCR RMS Sym A
Rated peak withstand current (Ipk)
Rated short-time withstand current (Icw 1s)
J
A
kA
kA
kA
80
100
2.7
1.9
Spacings
• Trough Air
• Over Surface
in (mm) 3 / 8 (9.5)
in (mm) 1 / 2 (12.7)
UL94V-0
Flammability Rating
Block Dimension (D x H x W)
Connections
1)
Only stranded
2)
copper jumper has been investigated for a 100A rating
mm
96x49x45
--
General character and use for UL types
The terminal blocks covered by this catalogue are intended for
use in the following applications and within the ratings specified.
Application:
- Commercial appliances (such as business and EDP equipment, etc.)
- General industrial (such as motor controllers, pushbutton stations, etc.)
Siemens · 2011
3
© Siemens 2011
Distribution blocks
5ST250
■ Selection and ordering data
I
U
A
V
80
600
MW
DT
Order No.
PS*) /
PU Weight
P. unit
1 item
Unit(s)
kg
PG
Unit(s)
Distribution blocks
1-pole
1.5
125
027
1
1
0.072
5ST2 505
027
1
1
0.146
160
2
5ST2 507
027
1
1
0.252
250
2.5
5ST2 508
027
1
1
0.440
5ST2 511
027
1
1
0.418
350
4-pole
5ST2 504
80
500
5
5ST2 501
027
1
1
0.246
125
690
5.5
5ST2 502
027
1
1
0.352
160
500
9
5ST2 503
027
1
1
0.620
5ST2 506
027
14
1
0.012
Copper jumper 32mm
1-phase
For 5ST2 505
*You can order this quantity or a multiple thereof
4
Siemens · 2011
© Siemens 2011
Distribution blocks
5ST250
■ Dimensional drawings
5ST2 505
5ST2 508
5ST2 507
5ST2 504
5ST2 511
5ST2 501
Siemens · 2011
5
© Siemens 2011
5ST2 502
The information provided in this brochure contains descriptions or characteristics of performance which in case of actual use do not always apply as described or which may change as
a result of further development of the products. An obligation to provide the respective characteristics shall only exist if expressly agreed in the terms of contract. Availability and technical specifications are subject to change without notice.
All product designations may be registered trademarks or product names of Siemens AG or
supplier companies whose use by third parties for their own purposes may violate the rights
of the owner.
© Siemens AG 2010 • PDF only: (E10003-E38-10T-G2431-7600) • PI 1110 En
Siemens AG
Industry Sector
Building Technologies Division
Postfach 10 09 53
93009 REGENSBURG
GERMANY
www.siemens.com/lowvoltage