Isoflexx® laminated busbars

Isoflexx® laminated busbars made of Cu-ETP are very flexible and permanently protected by high-quality insulation.

Up to 1 0 mm²
Cross-sections
2 0 mm
Standard length
0.5 - 0 mm
Lamella thickness

Areas of application for Isoflexx® laminated busbars

Isoflexx® laminated busbars made of copper can be used for all electrical connections in control cabinets and in low-voltage installations.

Whether as a movable component within solid busbar systems, for connection to generators, transformers, switchgear and switching devices, as a supply line to machine switches, and immersion baths or as a riser in switchgear – Isoflexx® busbars are innovative and cost-effective connections.

The loose lamellae in the insulation allow for easy bending or twisting and thus offer excellent flexibility when installing the busbars. Isoflexx® copper busbars are also suitable for drilling or punching.

SPS Isoflexx Classic versinnt konfektioniert
Space-saving

With the same load capacity
the conductor cross-section of
Isoflexx® compared to cables
up to 40 % smaller than cables
and thus allows for smaller
bending radii.

Flexible working

The flexibility allows the
compensation of construction
tolerances during installation
and the assembly time is
drastically reduced.

Material-saving

The smaller conductor cross-section
with Isoflexx® compared to cables
with the same current carrying
capacity reduces material consumption.

Clear

Choose between our standard
colours or personalise your
Isoflexx® and your control
cabinet systems gain in clarity
and safety.

Reliable

Isoflexx® has reinforced
edges, uniform insulation
and are extremely heat
resistant. The dielectric
strength is tested.

Certifications Isoflexx®

SPS Standard Produkte Schwanenmühle GmbH is certified according to DIN EN ISO 9001.

Approvals
UL 758 (Classic)
UL 508 (Classic & Premium)
DIN EN 45545-2/R22/23HL3 (Rail)

Standards
RoHS
CE
REACH
IEC 61439-1 

Conductor material Isoflexx®

  • Cross-sections from 21.6 to 1200 mm²
  • Standard length 2000 mm
  • Lengths from 250 to 3000 mm on request
  • Copper lamellae made of highly conductive Cu-ETP
  • Tensile strength 200 MPa [R200]
  • Electrical conductivity 58 MS/m
  • Isoflexx® from 0.5 mm - 1.0 mm lamella thickness
  • Cu-ETP blank
  • Cu-ETP tinned (corrosion resistant)

Insulation variants of Isoflexx®

Our Isoflexx® Classic and Isoflexx® Premium (105-190 °C) allow higher temperatures than PVC or XLPE cables (70-90 °C). This means that a significantly higher current-carrying capacity can be achieved.

Isoflexx® insulation is resistant and has reinforced edges to withstand high operating voltages. The homogeneous, stress-free insulation prevents cracking at edges. Isoflexx® busbar insulation is available in various colours and complies with the RoHS directive.

Product Isoflexx® Classic Isoflexx® Premium Isoflexx® Rail
Colors insulation Black, Blue, Green+Yellow Grey Black
Thickness [mm] ≥ 1 ≥ 2 ≥ 1,5
Dielectric strength 20 kV/mm 16 kV/mm 21 kV/mm
Elongation 370 % 180 % 550 %
Operating temperature -40 °C / +105 °C -40 °C / +190 °C -40 °C / +105 °C
Operating voltage 1000 VAC/1500 VDC (UL 600 VAC/750 VDC) 1000 VAC/1500 VDC (UL 600 VAC/750 VDC) 1000 VAC/1500 VDC
Flammability UL 94 V0 UL 94 V0 UL 94 V0
Glow wire test 960°C 960°C 960°C
Material Special PVC, Self-extinguishing, Migration resistant, Compatible with various construction materials Silicone, Halogen free, Self-extinguishing Thermoplastic elastomer (TPE), Halogen free, Insulation fulfills flame protection requirements for railroad applications
Approvals UL 758, UL 508 UL 508 DIN EN 45545-2/R22/23HL3 (Insulation)

Isoflexx® Classic

The special PVC insulation of Isoflexx® Classic is naturally self-extinguishing and is often used in industrial applications.

The plasticiser is migration resistant and compatible with construction materials such as polycarbonate and polymethyl methacrylate.

Approvals
UL 758, UL 508

Standards
RoHS, CE, REACH, ICE 61439-1

SPS Isoflexx Classic verzinnt
Halogenfreie Silikon-Isolierung Isoflexx® Premium

Isoflexx® Premium

The halogen-free silicone insulation of Isoflexx® Premium is self-extinguishing, produces only a very small amount of toxic smoke in case of fire and is therefore often used in public buildings. 

The insulation tube is a homogeneous profile which is pulled over the conductor material. 

Approvals
UL 508

Standards
RoHS, CE, REACH, ICE 61439-1

Isoflexx® Rail

Isoflexx® Rail’s halogen-free TPE insulation generates only a very small amount of toxic smoke in the event of fire and can therefore also be used in public facilities. 

Isoflexx® Rail insulation also fulfills the flame protection requirements for rail applications – for greater safety for people and railroads.

Approvals
DIN EN 45545-2/R22/23HL3 (insulation)

Standards
RoHS, CE, REACH, ICE 61439-1

Isoflexx Classic lamellierte Kupferschiene verzinnt

Assembly & processing of Isoflexx®

Assembly & processing of Isoflexx®

For Isoflexx® copper busbars, the current carrying capacity applies according to the following table determined according to IEC or UL standard:

Typenbez. / Type Querschnitt / Cross section [mm²] Anzahl Lamellen / Number lamellas Breite Lamellen / Width lamellas [mm] Dicke Lamellen / Thickness lamellas [mm] Farbe Isolierung / color insulation [Cu-ETP blank/ bare] Farbe Isolierung / color insulation [Cu-ETP verzinnt/ tinned] Strombelastung/ Current rating [A]* 65°C Strombelastung / Current rating [A]* 85°C Strombelastung / Current rating [A]* 105°C
IFX-C- 2 x 32 x 1 64 2 32 1 ⚫️ ⚫️** 290 384 456
IFX-C- 2 x 24 x 1 48 2 24 1 ⚫️ ⚫️** 242 320 380
IFX-C- 2 x 20 x 1 40 2 20 1 ⚫️ ⚫️** 208 275 326
IFX-C- 3 x 9 x 0,8 21 3 9 0 ⚫️ 🟡​+🟢, 🔵, ⚫️ 121 160 190
IFX-C- 3 x 32 x 1 96 3 32 1 ⚫️ ⚫️** 361 477 567
IFX-C- 3 x 24 x 1 72 3 24 1 ⚫️ ⚫️** 303 400 475
IFX-C- 3 x 20 x 1 60 3 20 1 ⚫️ ⚫️** 261 345 410
IFX-C- 4 x 32 x 1 128 4 32 1 ⚫️ ⚫️** 421 556 661
IFX-C- 4 x 24 x 1 96 4 24 1 ⚫️ ⚫️** 348 460 546
IFX-C- 4 x 20 x 1 80 4 20 1 ⚫️ ⚫️** 303 400 475
IFX-C- 4 x 16 x 0,8 49 4 16 0 ⚫️ 🟡​+🟢, 🔵, ⚫️ 227 300 356
IFX-C- 5 x 80 x 1 400 5 80 1 ⚫️ ⚫️** 1.022 1.350 1.605
IFX-C- 5 x 63 x 1 315 5 63 1 ⚫️ ⚫️** 832 1.099 1.306
IFX-C- 5 x 50 x 1 250 5 50 1 ⚫️ ⚫️** 702 927 1.102
IFX-C- 5 x 40 x 1 200 5 40 1 ⚫️ ⚫️ 577 762 906
IFX-C- 5 x 32 x 1 160 5 32 1 ⚫️ ⚫️ 480 634 753
IFX-C- 5 x 24 x 1 120 5 24 1 ⚫️ ⚫️ 405 535 636
IFX-C- 5 x 20 x 1 100 5 20 1 ⚫️ ⚫️** 321 424 504
IFX-C- 5 x 100 x 1 500 5 100 1 ⚫️ ⚫️** 1.215 1.604 1.907
IFX-C- 6 x 9 x 0,8 43 6 9 0 ⚫️ 🟡​+🟢, 🔵, ⚫️ 189 250 297
IFX-C- 6 x 80 x 1 480 6 80 1 ⚫️ ⚫️** 1.105 1.460 1.735
IFX-C- 6 x 63 x 1 378 6 63 1 ⚫️ ⚫️** 949 1.253 1.489
IFX-C- 6 x 50 x 1 300 6 50 1 ⚫️ ⚫️** 772 1.020 1.212
IFX-C- 6 x 40 x 1 240 6 40 1 ⚫️ ⚫️** 632 835 992
IFX-C- 6 x 32 x 1 192 6 32 1 ⚫️ ⚫️** 530 700 832
IFX-C- 6 x 24 x 1 144 6 24 1 ⚫️ ⚫️** 439 580 689
IFX-C- 6 x 20 x 1 120 6 20 1 ⚫️ ⚫️** 357 472 561
IFX-C- 6 x 16 x 0,8 74 6 16 0 ⚫️ 🟡​+🟢, 🔵, ⚫️ 287 380 451
IFX-C- 6 x 13 x 0,5 39 6 13 0 nicht verfügbar 🔵, ⚫️ 181 240 285
IFX-C- 6 x 100 x 1 600 6 100 1 ⚫️ ⚫️** 1.257 1.660 1.973
IFX-C- 8 x 80 x 1 640 8 80 1 ⚫️ ⚫️** 1.280 1.690 2.009
IFX-C- 8 x 63 x 1 504 8 63 1 ⚫️ ⚫️** 1.030 1.361 1.618
IFX-C- 8 x 50 x 1 400 8 50 1 ⚫️ ⚫️** 897 1.185 1.408
IFX-C- 8 x 40 x 1 320 8 40 1 ⚫️ ⚫️** 744 983 1.168
IFX-C- 8 x 32 x 1 256 8 32 1 ⚫️ ⚫️** 627 829 985
IFX-C- 8 x 24 x 1 192 8 24 1 ⚫️ ⚫️** 530 700 832
IFX-C- 8 x 100 x 1 800 8 100 1 ⚫️ ⚫️** 1.461 1.930 2.294
IFX-C- 9 x 9 x 0,8 64 9 9 0 nicht verfügbar 🟡​+🟢, 🔵, ⚫️ 231 305 362
IFX-C- 10 x 80 x 1 800 10 80 1 ⚫️ ⚫️** 1.416 1.870 2.223
IFX-C- 10 x 63 x 1 630 10 63 1 ⚫️ ⚫️** 1.188 1.569 1.865
IFX-C- 10 x 50 x 1 500 10 50 1 ⚫️ ⚫️ 1.027 1.357 1.613
IFX-C- 10 x 40 x 1 400 10 40 1 ⚫️ ⚫️ 856 1.131 1.344
IFX-C- 10 x 32 x 1 320 10 32 1 ⚫️ ⚫️ 726 959 1.140
IFX-C- 10 x 24 x 1 240 10 24 1 ⚫️ ⚫️ 606 800 951
IFX-C- 10 x 20 x 1 200 10 20 1 ⚫️ ⚫️** 500 661 785
IFX-C- 10 x 16 x 0,8 124 10 16 0 ⚫️ 🟡​+🟢, 🔵, ⚫️ 348 460 546
IFX-C- 10 x 100 x 1 1.000 10 100 1 ⚫️ ⚫️** 1.631 2.154 2.561
IFX-C- 11 x 21 x 1 231 11 21 1 ⚫️ 🟡​+🟢, 🔵, ⚫️ 567 749 890
IFX-C- 12 x 100 x 1 1.200 12 100 1 ⚫️ ⚫️** 1.724 2.276 2.706
Farbe Isolierung / color insulation [Cu-ETP blank/ bare] Farbe Isolierung / color insulation [Cu-ETP verzinnt/ tinned]

*Current load values: ambient temperature 35 °C, alternating current AC.

**Insulation colour on request!

Typenbez. / Type Querschnitt / Cross section [mm²] Anzahl Lamellen / Number lamellas Breite Lamellen / Width lamellas [mm] Dicke Lamellen / Thickness lamellas [mm] Farbe Isolierung / color insulation [Cu-ETP blank/ bare] Farbe Isolierung / color insulation [Cu-ETP verzinnt/ tinned] Strombelastung/ Current rating [A]* 65°C Strombelastung/ Current rating [A]* 85°C Strombelastung/ Current rating [A]* 105°C
IFX-P- 5 x 50 x 1 250 5 50 1 🔘** 🔘** 702 927 1.102
IFX-P- 5 x 40 x 1 200 5 40 1 🔘** 🔘** 577 762 906
IFX-P- 5 x 32 x 1 160 5 32 1 🔘** 🔘** 480 634 753
IFX-P- 5 x 24 x 1 120 5 24 1 🔘** 🔘** 405 535 636
IFX-P- 5 x 20 x 1 100 5 20 1 🔘** 🔘** 321 424 504
IFX-P- 5 x 100 x 1 500 5 100 1 🔘** 🔘** 1.215 1.604 1.907
IFX-P- 12 x 100 x 1 1.200 12 100 1 🔘** 🔘** 1.724 2.276 2.706
IFX-P- 10 x 80 x 1 800 10 80 1 🔘** 🔘** 1.280 1.690 2.009
IFX-P- 10 x 63 x 1 630 10 63 1 🔘** 🔘** 1.030 1.361 1.618
IFX-P- 10 x 50 x 1 500 10 50 1 🔘** 🔘** 897 1.185 1.408
IFX-P- 10 x 40 x 1 400 10 40 1 🔘** 🔘** 856 1.131 1.344
IFX-P- 10 x 32 x 1 320 10 32 1 🔘** 🔘** 726 959 1.140
IFX-P- 10 x 24 x 1 240 10 24 1 🔘** 🔘** 606 800 951
IFX-P- 10 x 20 x 1 200 10 20 1 🔘** 🔘** 500 661 785
IFX-P- 10 x 120 x 1 1.200 10 120 1 🔘** 🔘** 1.780 2.350 2.794
IFX-P- 10 x 100 x 1 1.000 10 100 1 🔘** 🔘** 1.631 2.154 2.561
Farbe Isolierung / color insulation [Cu-ETP blank/ bare] Farbe Isolierung / color insulation [Cu-ETP verzinnt/ tinned]

*Current load values: ambient temperature 35 °C, AC current AC.

** Cu-ETP blank & tinned Colour of insulation Grey on request!

Typenbez. / Type Querschnitt / Cross section [mm²] Anzahl Lamellen / Number lamellas Breite Lamellen / Width lamellas [mm] Farbe Isolierung / color insulation [Cu-ETP blank/ bare] Farbe Isolierung / color insulation [Cu-ETP verzinnt/ tinned] Strombelastung/ Current rating [A]* 65°C Strombelastung / Current rating [A]* 85°C Strombelastung / Current rating [A]* 105°C
IFX-R- 5 x 20 x 1 100 5 1,00 ⚫️** ⚫️ 321 424 504
IFX-R- 5 x 24 x 1 120 5 1,00 ⚫️** ⚫️ 405 535 636
IFX-R- 5 x 32 x 1 160 5 1,00 ⚫️** ⚫️ 480 634 753
IFX-R- 10 x 24 x 1 240 10 1,00 ⚫️** ⚫️ 606 800 951
IFX-R- 10 x 32 x 1 320 10 1,00 ⚫️** ⚫️ 726 959 1.140
IFX-R- 10 x 40 x 1 400 10 1,00 ⚫️** ⚫️ 856 1.131 1.344
IFX-R- 10 x 50 x 1 500 10 1,00 ⚫️** ⚫️ 1.027 1.357 1.613
IFX-R- 6 x 16 x 0,8 74 6 0,80 ⚫️** ⚫️ 287 380 451
IFX-R- 6 x 9 x 0,8 43 6 0,80 ⚫️** ⚫️ 189 250 297
IFX-R- 10 x 16 x 0,8 124 10 0,80 ⚫️** ⚫️ 348 460 546
Farbe Isolierung / color insulation [Cu-ETP blank/ bare] Farbe Isolierung / color insulation [Cu-ETP verzinnt/ tinned]

*Current load values: ambient temperature 35 °C, alternating current AC

** Cu-ETP bare Colour of insulation black on request!

Assembly instructions Isoflexx®

The following standards should be considered for bolting Isoflexx® busbars:

  • DIN 43671 & 43670 Busbars with rectangular cross-section.
  • DIN 43673 Currents for busbars – drilling and screwing


Isoflexx® connections can be easily made by yourself with the right tools & accessories. By stripping the ends,

Isoflexx® offers more safety in your installations, because you do not need cable lugs. The connections must be stripped by yourself.

Treatment of the contact surfaces
The surfaces should be even, but not polished. The contact resistance is lower if the contact surfaces have a medium roughness (RA 1.6-3.2). Contact surfaces should be free of oxide and grease. If this is not the case, the contact surfaces must be cleaned.

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Possible SPS assembly

SPS Stern