1 / 5

Product

DIN VDE 0250-602 / 606 short-circuit-proof single-core wires1.8/3 kV (6 kV Test)DIN VDE 0250-602Short-Circuit Proof ≤ 1 kV

NSGAFÖU 1.8/3 kV Short-Circuit-Proof Single-Core Rubber WireDIN VDE 0250-602 tinned copper, 3GI3 EPR & 5GM3 polychloroprene switchgear wire

Flexible 1.8/3 kV single-core rubber wire (NSGAFÖU) to DIN VDE 0250-602 with Class 5 tinned copper core, 3GI3 EPR insulation and 5GM3 polychloroprene sheath — inherently short-circuit and earth-fault proof in switchgear and rail vehicles up to 1,000 V.

Flame-retardant

Oil-resistant

Approved

Cross-section

Order designation: NSGAFÖU 1 × 70
OD nom: 17.8 mm
OD max: 20.5 mm
Weight ≈: 757 kg/km
Ampacity (air): 347 A

Check against my drum All sizes (18)

Request a quote Datasheet WhatsApp

Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Rated voltage: 1.8/3 kV
Short-circuit duty: Up to 1,000 V
Core / sheath: 3GI3 EPR / 5GM3
Min. bend R: 4–6 × D fixed
Operating temp.: -25 to +80 °C
Test voltage: 6 kV AC

Typical values for this cable type, based on DIN VDE 0250-602 / IEC 60228 — confirmed in the datasheet and quotation for your order.

Application fit

Is NSGAFÖU 1.8/3 kV right for your machine?

VDE 0250-602 EPR/polychloroprene single-core 1.8/3 kV cable with short-circuit-proof insulation for switchgear, rail vehicles, buses and crane cubicles.

Switchgear & control cabinet wiring

Suitable

Primary duty — inherently short-circuit and earth-fault-proof wiring inside switchgear, distribution boards and rail traction racks.

Motor stator, traction & converter leads

Suitable

Flexible DC/AC busbar-to-motor and converter jumper connections in rolling stock and cranes.

Fixed installation

Suitable

Protected installation in conduits, closed trunking and machine frames up to 1.8/3 kV.

Trailing & towing

Not suitable

Single-core cabinet/traction wire — not designed for open floor trailing.

Use NSSHÖU Heavy Rubber

Motorised monospiral reel

Not suitable

Not engineered for dynamic reeling drums under tensile load.

Use (N)SHTÖU Reeling

Typical machinesLV & MV switchgear & distribution boardsUnprotected transformer-to-ACB busbar risersRail vehicles, locomotives & transit coachesElectric & hybrid city buses & trolleybusesDry-room industrial machinery & rectifiersGenerator & UPS battery bank interconnections

Construction

Layer by layer

Shown: NSGAFÖU 1 × 70 mm² 1.8/3 kV — fine-stranded Class 5 tinned copper conductor, 1.8 mm wall 3GI3 ethylene-propylene rubber (EPR) primary insulation and 1.0 mm wall black 5GM3 polychloroprene (PCP) outer sheath.

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Conductor	Fine-stranded tinned annealed copper, Class 5 per DIN VDE 0295 / IEC 602281.5 mm² to 500 mm² single-core flexible conductor
2	Core insulation (3GI3)	Ethylene-propylene rubber compound type 3GI3 per DIN VDE 0207-201.8/3 kV nominal · +90 °C continuous / +250 °C short-circuit
3	Outer sheath (5GM3)	Oil-resistant, flame-retardant polychloroprene rubber compound type 5GM3, blackDIN VDE 0207-21 · IEC 60332-1-2 flame-retardant · EN 60811-404 oil-resistant

NSGAFÖU 1.8/3 kV Black (1×1.5 – 1×500 mm²)

Standard black 5GM3 polychloroprene outer sheath over 3GI3 EPR insulation for switchgear and rail wiring

NSGAFÖU 1.8/3 kV Orange (1×1.5 – 1×300 mm²)

Optional high-visibility orange 5GM3 outer sheath for HV traction and DC busbar identification

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on DIN VDE 0250-602 / IEC 60228. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage U0/U (max AC / DC): 1.8/3 kV AC nominal · max. 2.1/3.6 kV AC · max. 2.7/5.4 kV DC
Test voltage & short-circuit proof rating: 6.0 kV AC routine test · Short-circuit & earth-fault proof in switchgear up to 1,000 V

Thermal

Ambient temperature — flexing / fixed: -25 to +80 °C flexing · -40 to +80 °C fixed (up to +90 °C at conductor)
Max. short-circuit conductor temperature: +250 °C (max. 5 s)

Mechanical

Min. bending radius: 4 × D to 6 × D fixed installation · 5 × D to 10 × D flexing / moving
Permissible tensile load: 15 N/mm² of copper cross-section during installation (22.5 N on 1.5 mm² to 7,500 N on 500 mm²)

Reference standards

Reference standards: DIN VDE 0250-602 · DIN VDE 0295 / IEC 60228 Class 5 · DIN VDE 0207-20 (3GI3) · DIN VDE 0207-21 (5GM3)
Flame & oil resistance: Flame-retardant IEC 60332-1-2 (VDE 0482-332-1-2) · Oil-resistant EN 60811-404 (VDE 0473-811-404)

Sizes

Dimensions, wall thicknesses, weights & current capacity

18 single-core cross-sections from 1 × 1.5 mm² to 1 × 500 mm² (1.8/3 kV, DIN VDE 0250-602)

Dimensions & weights
Order designation	Cross-section mm²	3GI3 wall mm	5GM3 wall mm	OD min mm	OD nom mm	OD max mm	Cu weight kg/km	Total weight ≈ kg/km	Ampacity (air) A
All sizes
1.5 – 16 mm²
NSGAFÖU 1 × 1.5	1 × 1.5	1.3	0.8	5.1	6.3	7.0	14	51	30
NSGAFÖU 1 × 2.5	1 × 2.5	1.3	0.8	5.6	6.7	7.5	24	63	41
NSGAFÖU 1 × 4	1 × 4	1.3	0.8	6.2	7.4	9.0	38	82	55
NSGAFÖU 1 × 6	1 × 6	1.3	0.8	6.7	7.9	9.5	58	103	70
NSGAFÖU 1 × 10	1 × 10	1.5	0.8	8.1	9.5	11.0	96	159	98
NSGAFÖU 1 × 16	1 × 16	1.5	0.8	9.1	10.5	13.0	154	219	132
25 – 120 mm²
NSGAFÖU 1 × 25	1 × 25	1.6	1.0	11.1	12.8	15.0	240	335	176
NSGAFÖU 1 × 35	1 × 35	1.6	1.0	12.3	14.1	16.5	336	435	218
NSGAFÖU 1 × 50	1 × 50	1.8	1.0	13.8	15.9	18.0	480	582	276
NSGAFÖU 1 × 70	1 × 70	1.8	1.0	15.5	17.8	20.5	672	757	347
NSGAFÖU 1 × 95	1 × 95	2.2	1.0	17.7	20.1	24.0	912	1,040	416
NSGAFÖU 1 × 120	1 × 120	2.2	1.0	19.2	22.0	26.0	1,152	1,289	488
150 – 500 mm²
NSGAFÖU 1 × 150	1 × 150	2.2	1.2	21.1	24.0	28.0	1,440	1,581	566
NSGAFÖU 1 × 185	1 × 185	2.4	1.2	23.1	26.3	31.0	1,776	1,895	644
NSGAFÖU 1 × 240	1 × 240	2.6	1.2	26.0	29.6	34.5	2,304	2,452	775
NSGAFÖU 1 × 300	1 × 300	2.8	1.2	28.4	32.2	38.0	2,880	2,998	898
NSGAFÖU 1 × 400	1 × 400	3.1	1.4	34.6	40.5	41.5	3,840	4,200	1,060
NSGAFÖU 1 × 500	1 × 500	3.4	1.6	38.0	42.0	45.0	4,800	5,500	1,250

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Current ratings apply to single-core routing in free air at 30 °C ambient and 90 °C conductor temperature.

Resistance & ampacity
Cross-section mm²	Max. DC resistance at 20 °C (tinned) Ω/km	Current in free air (30 °C) A	Current in conduit (30 °C) A	Max. pulling load (15 N/mm²) N
1 × 1.5	13.700	30	15	22
1 × 2.5	8.210	41	21	38
1 × 4	5.090	55	29	60
1 × 6	3.390	70	37	90
1 × 10	1.950	98	52	150
1 × 16	1.240	132	70	240
1 × 25	0.795	176	93	375
1 × 35	0.565	218	115	525
1 × 50	0.393	276	146	750
1 × 70	0.277	347	185	1,050
1 × 95	0.210	416	221	1,425
1 × 120	0.164	488	259	1,800
1 × 150	0.132	566	301	2,250
1 × 185	0.108	644	342	2,775
1 × 240	0.082	775	412	3,600
1 × 300	0.065	898	467	4,500
1 × 400	0.049	1,060	557	6,000
1 × 500	0.038	1,250	662	7,500

Conductor resistance values comply with IEC 60228 Class 5 metal-coated (tinned) copper conductors at 20 °C.

Reel check

Will it fit your machine?

A first screen using datasheet values. Engineering confirms drum geometry, acceleration and tension with your quotation.

Cable sizeDrum core diameter (mm)

Travel speed (m/min)

m/min

Expected tensile force (N)

Cable length on drum (m)

Drum core 200 mm ≥ 178 mmBending radius OK (5 × OD 17.8 mm)

15 m/min ≤ 30 m/minWithin the rated travel speed

500 N exceeds 0 N dynamicChoose a larger cross-section or reduce tension

Minimum bending radius: 89 mm
Min. drum core diameter: ≈ 178 mm
Cable weight on drum: 18.9 kg
Copper content: 16.8 kg

Indicative only: based on the datasheet outer diameter and 5 × OD bending radius. Current derating for wound layers per DIN VDE 0298-4 is assessed separately.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
AC spark / dielectric voltage test	6.0 kV AC	Every production length
Conductor DC resistance at 20 °C	DIN VDE 0295 / IEC 60228 Class 5 (tinned)	Every production length
Sample tests
Vertical flame propagation	IEC 60332-1-2 (VDE 0482-332-1-2)	Per production batch
Oil resistance of 5GM3 outer sheath	EN 60811-404 (VDE 0473-811-404)	Per compound batch

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

1.8/3 kV (6 kV Test)CE · LVDRoHS · REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX NSGAFÖU 1.8/3 kV [1×mm²] · DIN VDE 0250-602 · CE · [year] · [metre mark]

Standard packing: Coils (small cross-sections) or non-returnable/returnable wooden drums
HS code: 8544.60

Technical documents

Downloads

PDFNSGAFÖU 1.8/3 kV Short-Circuit-Proof Single-Core Rubber Wire – technical datasheet18 sizes · construction, technical data, approvals XLSXNSGAFÖU 1.8/3 kV spec data (Excel)All 18 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-20
Updated: 2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

Why is a 1.8/3 kV NSGAFÖU cable used inside 400 V or 690 V low-voltage switchboards?

Because NSGAFÖU combines 1.8/3 kV 3GI3 EPR primary insulation with a tough 5GM3 polychloroprene outer sheath over a single conductor, DIN VDE 0100-520 recognizes it as 'short-circuit-proof and earth-fault-proof' up to 1,000 V. This makes it ideal for unprotected riser connections between transformer terminals, main busbars and incoming air circuit breakers (ACBs).

What does the German designation NSGAFÖU stand for?

'N' = VDE standard type; 'S' = switchgear wire (Schaltleitung); 'G' = EPR rubber insulation (3GI3); 'A' = single-core wire with reinforced double layer; 'F' = fine-stranded Class 5 flexible conductor; 'Ö' = oil-resistant outer sheath; 'U' = flame-retardant polychloroprene (5GM3).

When should I choose NSHXAFÖ instead of NSGAFÖU?

Choose NSGAFÖU when standard polychloroprene (5GM3) oil- and flame-retardant rubber is specified. Choose NSHXAFÖ (DIN VDE 0250-606) when a low-smoke zero-halogen (LSZH / FRNC compound HM3) jacket is required for passenger rail coaches, underground stations, marine switchboards or public buildings.

Can NSGAFÖU be installed directly in earth or outdoors on open cable ladders?

No. Under DIN VDE 0250-602 and VDE 0298-3, NSGAFÖU is designed for dry rooms, switchgear cabinets, closed installation ducts, pipes, rail vehicles and buses. It is not intended for direct burial or open outdoor cable ladders.

Request a quote

Get an engineering quote for NSGAFÖU 1.8/3 kV

Your selection and application details are copied into the enquiry form below.

01Selected sizes

Use + Add next to a size or configuration.

02Reel & motion

Add your operating conditions here to include them in your enquiry.

Reel typeDrum core diameter (mm)Cable length on drum (m)Travel speed (m/min)Max. accelerationCycles per hourLength and quantityAmbient temperatureExposure (outdoor, water, oil, abrasion)Destination countryEquipment and operating conditions

03Message for our engineers

Flexible Single-Core Rubber Cable — NSGAFÖU 1.8/3 kV

Selected sizes:


Reel & motion:
- Reel type: 
- Drum core diameter (mm): 
- Cable length on drum (m): 
- Travel speed (m/min): 
- Max. acceleration: 
- Cycles per hour: 
- Length and quantity: 
- Ambient temperature: 
- Exposure (outdoor, water, oil, abrasion): 
- Destination country: 
- Equipment and operating conditions:

Send via WhatsApp

Datasheet Request a quote

NSGAFÖU 1.8/3 kV Short-Circuit-Proof Single-Core Rubber WireDIN VDE 0250-602 tinned copper, 3GI3 EPR & 5GM3 polychloroprene switchgear wire

Switchgear & control cabinet wiring

Motor stator, traction & converter leads

Fixed installation

Trailing & towing

Motorised monospiral reel

NSGAFÖU 1.8/3 kV Black (1×1.5 – 1×500 mm²)

NSGAFÖU 1.8/3 kV Orange (1×1.5 – 1×300 mm²)

Electrical

Thermal

Mechanical

Reference standards

Check results

Inspection certificate

Product approvals

Company certificates

01Selected sizes

02Reel & motion

03Message for our engineers

NSHXAFÖ 1.8/3 kV

NSHTÖU

NSSHÖU

TRM-J 0.69/1.15 kV