Three Level Spring Cage Installation
Terminal Blocks STI
The outstanding feature of the new STI series of
installation terminal blocks from Phoenix Contact is the
space-saving "mini-spring" spring cage concept. With
this spring cage connection, which is considerably
smaller, the size of the 5 mm wide terminal block has
been greatly reduced. The high quality features such as
maximum connection space, the flexible plug-in bridge
system and the generous labeling option have not been
done away with.
Maximum connection space
Rational wiring of different
types of conductors is a
priority of installation
terminal blocks. The dimen-
sions of the STI terminal
block conductor guides are
such that solid and stranded
conductors up to 4 mm
2
and
stranded conductors up to
2.5 mm
2
, even with ferrules
and insulating sleeves can be connected.
Power distribution
For fast and flexible power
distribution, the STI terminal
blocks have one bridge shaft
for the FBS plug-in bridging
system. The FBS plug-in
bridges are available in the
following number of
positions: 2, 3, 4, 5, 10 and
20. A practical test
connection can be achieved
in the bridge shaft of the terminal block.
Operation of the screwless
N-disconnect slide is fast and
requires only a standard
screwdriver, reliable
contacting being recognized
by it snapping in. The
position of the N-disconnect
slide is also recognizable.
Marking
A clear assignment of the
connection lines is a pre-
requisite for unambiguous
and correct installation of
terminal strips.
The STI series is ideally
suited to these requirements.
The generous labeling option
in the terminal center using
ZB standard Zack ("quick")
strip is always easily accessible and readily
recognizable, even when wired. Moreover, each
termination point can be individually labeled with the
ZBF Zack strips.
Phoenix Contact GmbH & Co. KG • 32823 Blomberg, Germany
Phone +49 52 35 3-00 • Fax +49 52 35 3-4 12 00 • www.phoenixcontact.com
Three Level
Installation Terminal Block
STI 2,5-PE/L/NT
(IEC)
[mm
2
]
rigid
solid
flexible
stranded
AWG
28-12
I
[A]
20
U
[V]
*
400
250
250
DIN VDE 0611
0.08-4
0.08-4
* phase conductor/phase conductor
phase conductor/PE
phase conductor/N
Technical data
Three level installation terminal block,
with green-yellow
PE
connection, phase conductor
connection
L
and blue neutral disconnection
NT
(1)
End cover
gray
Type
Order No.
Pcs.
Pkt.
50
STI 2,5-PE/L/NT
30 31 82 7
D-STI/3
30 30 84 4
10
(2)
Insulating stop sleeve,
prevents unintentional
clamping of insulation in the case of smaller cross sections
Cross section range:
0.08-0.2 mm
2
0.25-0.5 mm
2
0.75-1 mm
2
(3)
Plug-in bridge,
for
cross-connections in the
terminal center
2-pos.
3-pos.
4-pos.
5-pos.
10-pos.
20-pos.
white
gray
black
ISH 2,5/0,2
ISH 2,5/0,5
ISH 2,5/1
FBS 2-5
FBS 3-5
FBS 4-5
FBS 5-5
FBS 10-5
FBS 20-5
ATP-STI/3
I
max.
: 24 A
24 A
24 A
24 A
24 A
24 A
30 02 84 3
30 02 85 6
30 02 86 9
30 30 16 1
30 30 17 4
30 30 18 7
30 30 19 0
30 30 21 3
30 30 22 6
30 30 85 7
50
50
50
10
10
10
10
10
10
10
(4)
Partition plate,
for
visual and electrical separation
of terminal groups, 2 mm thick
(5)
Neutral busbar,
3 x 10 mm, 1m long, copper, tin-plated
(6)
Support,
blue insulating material, for
mounting the neutral busbar, to be interposed
at intervals of 20 cm, 2 mm wide
(7)
Test adapter,
for 4 mm
∅
test plug PS
and 4 mm
∅
safety test plug,
making contact in the bridge shaft
(8)
Screwdriver,
for
actuating the tension spring
(9)
Zack strip,
flat,
for labeling the outer marker grooves
(10)
Zack strip,
10-section, for
labeling in the terminal center
and on the plug-in bridges
NLS-CU 3/10
I
max.
: 140 A
04 02 17 4
10
AB-STI/3
30 30 83 1
10
PAI 4
30 30 92 5
10
SZF 1 - 0,6 x 3,5
12 04 51 7
10
white
ZBF 5:UNPRINTED
08 08 64 2
10
white
ZB 5: UNPRINTED
10 50 00 4
10
Dimensions
Width / length / end cover width
[mm]
Height (NS 35/7.5 / NS 35/15)
[mm]
Technical data in accordance with IEC/ DIN VDE
Maximum load current / cross section
[A] / [mm
2
]
Current carrying capacity of the neutral busbar
[A]
Rated surge voltage / contamination class
[kV] / –
Surge voltage category / insulation material group
–/–
Connection capacity
Stranded with ferrule with plastic sleeve
[mm
2
]
Stranded with ferrule without plastic sleeve
[mm
2
]
Stranded with TWIN ferrule with plastic sleeve
[mm
2
]
Stripping length
[mm]
Internal cylindrical gauge (IEC 60 947-1)
Insulation material
Inflammability class acc. to UL 94
Approval data (UL and CSA/CUL)
Nom. voltage / nom. current / conduc. sizes
UL: [V] / [A] / AWG
CSA/CUL: [V] / [A] / AWG
1
) Potential-Ground
2
) Potential-Potential
PHOENIX CONTACT page 2 of 8
5.2 / 97 / 2.2
50.5 / 58
20 / 4
140
4
1
) / 6
2
) / 3
III / I
0.25 - 2.5
0.25 - 2.5
0.5
10
A3
PA
V0
–
–
Three Level
Installation Terminal Block
STI 2,5-PE/L/L
(IEC)
[mm
2
]
rigid
solid
flexible
stranded
AWG
28-12
I
[A]
24
U
[V]
*
400
250
DIN VDE 0611
0.08-4
0.08-4
* phase conductor/phase conductor
phase conductor/PE
Technical data
Three level installation terminal block,
with green-yellow
PE
connection, and two
phase conductor connections
L
(1)
End cover
gray
Type
Order No.
Pcs.
Pkt.
50
STI 2,5-PE/L/L
30 31 83 0
D-STI/3
30 30 84 4
10
(2)
Insulating stop sleeve,
prevents unintentional
clamping of insulation in the case of smaller cross sections
Cross section range:
0.08-0.2 mm
2
0.25-0.5 mm
2
0.75-1 mm
2
(3)
Plug-in bridge,
for
cross-connections in the
terminal center
2-pos.
3-pos.
4-pos.
5-pos.
10-pos.
20-pos.
white
gray
black
ISH 2,5/0,2
ISH 2,5/0,5
ISH 2,5/1
FBS 2-5
FBS 3-5
FBS 4-5
FBS 5-5
FBS 10-5
FBS 20-5
ATP-STI/3
I
max.
: 24 A
24 A
24 A
24 A
24 A
24 A
30 02 84 3
30 02 85 6
30 02 86 9
30 30 16 1
30 30 17 4
30 30 18 7
30 30 19 0
30 30 21 3
30 30 22 6
30 30 85 7
50
50
50
10
10
10
10
10
10
10
(4)
Partition plate,
for
visual and electrical separation
of terminal groups, 2 mm thick
(5)
Support,
blue insulating material, for
mounting the neutral busbar, to be interposed
at intervals of 20 cm, 2 mm wide
(6)
Test adapter,
for 4 mm
∅
test plug PS
and 4 mm
∅
safety test plug,
making contact in the bridge shaft
(7)
Screwdriver,
for
actuating the tension spring
(8)
Zack strip,
flat,
for labeling the outer marker grooves
(9)
Zack strip,
10-section, for
labeling in the terminal center
and on the plug-in bridges
AB-STI/3
30 30 83 1
10
PAI 4
30 30 92 5
10
SZF 1 - 0,6 x 3,5
12 04 51 7
10
white
ZBF 5:UNPRINTED
08 08 64 2
10
white
ZB 5: UNPRINTED
10 50 00 4
10
Dimensions
Width / length / end cover width
[mm]
Height (NS 35/7.5 / NS 35/15)
[mm]
Technical data in accordance with IEC/ DIN VDE
Maximum load current / cross section
[A] / [mm
2
]
Rated surge voltage / contamination class
[kV] / –
Surge voltage category / insulation material group
–/–
Connection capacity
Stranded with ferrule with plastic sleeve
[mm
2
]
Stranded with ferrule without plastic sleeve
[mm
2
]
Stranded with TWIN ferrule with plastic sleeve
[mm
2
]
Stripping length
[mm]
Internal cylindrical gauge (IEC 60 947-1)
Insulation material
Inflammability class acc. to UL 94
Approval data (UL and CSA/CUL)
Nom. voltage / nom. current / conduc. sizes
UL: [V] / [A] / AWG
CSA/CUL: [V] / [A] / AWG
1
) Potential-Ground
2
) Potential-Potential
5.2 / 97 / 2.2
50.5 / 58
24 / 4
/ 6
2
) / 3
III / I
4
1
)
0.25 - 2.5
0.25 - 2.5
0.5
10
A3
PA
V0
–
–
PHOENIX CONTACT page 3 of 8
Three Level
Installation Terminal Block
STI 2,5-PE/L/N
(IEC)
[mm
2
]
rigid
solid
flexible
stranded
AWG
28-12
I
[A]
24
U
[V]
*
400
250
250
DIN VDE 0611
0.08-4
0.08-4
* phase conductor/phase conductor
phase conductor/PE
phase conductor/N
Technical data
Three level installation terminal block,
with green-yellow
PE
connection, phase conductor
connection
L
and blue
N
connection
(1)
End cover
gray
Type
Order No.
Pcs.
Pkt.
50
STI 2,5-PE/L/N
30 31 84 3
D-STI/3
30 30 84 4
10
(2)
Insulating stop sleeve,
prevents unintentional
clamping of insulation in the case of smaller cross sections
Cross section range:
0.08-0.2 mm
2
0.25-0.5 mm
2
0.75-1 mm
2
(3)
Plug-in bridge,
for
cross-connections in the
terminal center
2-pos.
3-pos.
4-pos.
5-pos.
10-pos.
20-pos.
white
gray
black
ISH 2,5/0,2
ISH 2,5/0,5
ISH 2,5/1
FBS 2-5
FBS 3-5
FBS 4-5
FBS 5-5
FBS 10-5
FBS 20-5
ATP-STI/3
I
max.
: 24 A
24 A
24 A
24 A
24 A
24 A
30 02 84 3
30 02 85 6
30 02 86 9
30 30 16 1
30 30 17 4
30 30 18 7
30 30 19 0
30 30 21 3
30 30 22 6
30 30 85 7
50
50
50
10
10
10
10
10
10
10
(4)
Partition plate,
for
visual and electrical separation
of terminal groups, 2 mm thick
(5)
Support,
blue insulating material, for
mounting the neutral busbar, to be interposed
at intervals of 20 cm, 2 mm wide
(6)
Test adapter,
for 4 mm
∅
test plug PS
and 4 mm
∅
safety test plug,
making contact in the bridge shaft
(7)
Screwdriver,
for
actuating the tension spring
(8)
Zack strip,
flat,
for labeling the outer marker grooves
(9)
Zack strip,
10-section, for
labeling in the terminal center
and on the plug-in bridges
AB-STI/3
30 30 83 1
10
PAI 4
30 30 92 5
10
SZF 1 - 0,6 x 3,5
12 04 51 7
10
white
ZBF 5:UNPRINTED
08 08 64 2
10
white
ZB 5: UNPRINTED
10 50 00 4
10
Dimensions
Width / length / end cover width
[mm]
Height (NS 35/7.5 / NS 35/15)
[mm]
Technical data in accordance with IEC/ DIN VDE
Maximum load current / cross section
[A] / [mm
2
]
Rated surge voltage / contamination class
[kV] / –
Surge voltage category / insulation material group
–/–
Connection capacity
Stranded with ferrule with plastic sleeve
[mm
2
]
Stranded with ferrule without plastic sleeve
[mm
2
]
Stranded with TWIN ferrule with plastic sleeve
[mm
2
]
Stripping length
[mm]
Internal cylindrical gauge (IEC 60 947-1)
Insulation material
Inflammability class acc. to UL 94
Approval data (UL and CSA/CUL)
Nom. voltage / nom. current / conduc. sizes
UL: [V] / [A] / AWG
CSA/CUL: [V] / [A] / AWG
1
) Potential-Ground
2
) Potential-Potential
5.2 / 97 / 2.2
50.5 / 58
24 / 4
/ 6
2
) / 3
III / I
4
1
)
0.25 - 2.5
0.25 - 2.5
0.5
10
A3
PA
V0
–
–
PHOENIX CONTACT page 4 of 8
Three Level
Installation Terminal Block
STI 2,5-L/L
(IEC)
[mm
2
]
rigid
solid
flexible
stranded
AWG
28-12
I
[A]
24
U
[V]
*
400
DIN VDE 0611
0.08-4
0.08-4
* phase conductor/phase conductor
Technical data
Three level installation terminal block,
with two phase conductor connections
L
Type
Order No.
Pcs.
Pkt.
50
STI 2,5-L/L
30 31 85 6
(1)
End cover
gray
D-STI/3
30 30 84 4
10
(2)
Insulating stop sleeve,
prevents unintentional
clamping of insulation in the case of smaller cross sections
Cross section range:
0.08-0.2 mm
2
0.25-0.5 mm
2
0.75-1 mm
2
(3)
Plug-in bridge,
for
cross-connections in the
terminal center
2-pos.
3-pos.
4-pos.
5-pos.
10-pos.
20-pos.
white
gray
black
ISH 2,5/0,2
ISH 2,5/0,5
ISH 2,5/1
FBS 2-5
FBS 3-5
FBS 4-5
FBS 5-5
FBS 10-5
FBS 20-5
ATP-STI/3
I
max.
: 24 A
24 A
24 A
24 A
24 A
24 A
30 02 84 3
30 02 85 6
30 02 86 9
30 30 16 1
30 30 17 4
30 30 18 7
30 30 19 0
30 30 21 3
30 30 22 6
30 30 85 7
50
50
50
10
10
10
10
10
10
10
(4)
Partition plate,
for
visual and electrical separation
of terminal groups, 2 mm thick
(5)
Support,
blue insulating material, for
mounting the neutral busbar, to be interposed
at intervals of 20 cm, 2 mm wide
(6)
Test adapter,
for 4 mm
∅
test plug PS
and 4 mm
∅
safety test plug,
making contact in the bridge shaft
(7)
Screwdriver,
for
actuating the tension spring
(8)
Zack strip,
flat,
for labeling the outer marker grooves
(9)
Zack strip,
10-section, for
labeling in the terminal center
and on the plug-in bridges
AB-STI/3
30 30 83 1
10
PAI 4
30 30 92 5
10
SZF 1 - 0,6 x 3,5
12 04 51 7
10
white
ZBF 5:UNPRINTED
08 08 64 2
10
white
ZB 5: UNPRINTED
10 50 00 4
10
Dimensions
Width / length / end cover width
[mm]
Height (NS 35/7.5 / NS 35/15)
[mm]
Technical data in accordance with IEC/ DIN VDE
Maximum load current / cross section
[A] / [mm
2
]
Rated surge voltage / contamination class
[kV] / –
Surge voltage category / insulation material group
–/–
Connection capacity
Stranded with ferrule with plastic sleeve
[mm
2
]
Stranded with ferrule without plastic sleeve
[mm
2
]
Stranded with TWIN ferrule with plastic sleeve
[mm
2
]
Stripping length
[mm]
Internal cylindrical gauge (IEC 60 947-1)
Insulation material
Inflammability class acc. to UL 94
Approval data (UL and CSA/CUL)
Nom. voltage / nom. current / conduc. sizes
UL: [V] / [A] / AWG
CSA/CUL: [V] / [A] / AWG
5.2 / 97 / 2.2
50.5 / 58
24 / 4
6/3
III / I
0.25 - 2.5
0.25 - 2.5
0.5
10
A3
PA
V0
–
–
PHOENIX CONTACT page 5 of 8
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