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Product

Hook-up & equipment wiresJIS C 3410 Marine250 V · SCP (EPR) & SYP (PVC)0.75–5.5 mm²

SCP / SYP JIS Shipboard Equipment WireJIS C 3410 250 V EP-rubber (SCP) & vinyl (SYP) marine switchboard hook-up wire

Japanese marine 250 V single-core switchboard, console and control-panel hook-up wire built to JIS C 3410 in two insulation grades: `SCP` (+85/+90 °C cross-linked EP-rubber with chloroprene/protective skin) and `SYP` (+60/+75 °C flame-retardant vinyl PVC).

Flame-retardant
Oil-resistant
Water-resistant
Approved
Order designation
SCP 250V 1×1.25
Outer Ø min
3.3 mm
Outer Ø max
3.6 mm
Weight ≈
23 kg/km
Min. bend R
14 mm
Check against my drumAll sizes (14)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Voltage rating
250 V
150/250 V AC · JIS C 3410 panel wire
Test voltage
1500 V AC
50/60 Hz 1–5 min dielectric test
Thermal rating
+85/+90 & +75 °C
SCP: +85/+90 °C EPR · SYP: +75 °C PVC
Flame test
IEC 60332-1-2
Flame-retardant marine switchboard wire
Bending radius
4 × OD
4 × overall diameter fixed panel routing
Size range
0.75–5.5 mm²
7-wire or flexible stranded annealed Cu

Typical values for this cable type, based on JIS C 3410 (250 V Marine Switchboard Wire) — confirmed in the datasheet and quotation for your order.

Application fit

Is SCP / SYP right for your machine?

SCP and SYP are the standard JIS C 3410 internal hook-up wires for marine main switchboards (MSB), emergency switchboards, engine-control-room (ECR) consoles and bridge navigation desks on vessels built or refitted to Japanese shipyard standards.

Fixed installation

Suitable

Internal wiring of marine switchboards, starter panels, bridge consoles and ECR relay cabinets.

VFD inverter to AC motor screened feeder

Not suitable

Unscreened single-core panel wire; for inter-panel shipboard control runs, select MPY / MPYCY / MPYCYS.

Use MPYCYS Screened

Trailing & towing

Not suitable

Fixed internal switchboard wire; not intended for external deck or mobile duty.

Use MPYCY Armoured

Energy chain / drag chain

Not suitable

For North American UL/CSA switchboard wiring rated 600 V +125 °C, select UL AWM 3173 / SIS.

Use UL 3173 / SIS
Typical machinesMarine main & emergency switchboards (MSB/ESB)Engine control room (ECR) consolesBridge navigation & helm control desksShipboard motor starter & alarm panelsNK, ABS, DNV, LR & CCS vessel retrofits

Construction

Layer by layer

Shown: SCP 1×1.25 mm² — stranded tinned/bare annealed copper conductor, +85/+90 °C cross-linked ethylene-propylene rubber (EPR) primary dielectric and oil/flame-resistant polychloroprene/vinyl protective outer skin (or homogeneous flame-retardant vinyl on SYP).

123
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Stranded annealed copper conductor7-wire circular stranded or flexible stranded annealed copper (tinned on SCP, bare/tinned on SYP) per JIS C 3102 / 3103JIS C 3410 / JIS C 3102
2Primary EPR (SCP) or Vinyl (SYP) layerCross-linked ethylene-propylene rubber (+85/+90 °C on SCP) or heat/flame-resistant PVC (+60/+75 °C on SYP)JIS C 3410
3Protective flame-retardant outer skinOil- and flame-retardant polychloroprene / synthetic rubber skin (SCP) or colour-coded vinyl surface (SYP)JIS C 3410 · IEC 60332-1-2

SCP (250 V EP-Rubber Switchboard Wire, +85/+90 °C)

Thermoset EP-rubber insulated marine switchboard wire resistant to soldering heat and high ambient cubicles

SYP (250 V Vinyl Switchboard Wire, +60/+75 °C)

Compact flame-retardant PVC insulated panel hook-up wire for relay racks and bridge indicator wiring

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on JIS C 3410 (250 V Marine Switchboard Wire). Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage
250 V AC (150/250 V)
AC test voltage (50/60 Hz)
1500 V AC for 1–5 minutes
Max. DC conductor resistance (20 °C)
0.75 mm²: ≤ 25.3 Ω/km · 1.25 mm²: ≤ 15.0 Ω/km · 2.0 mm²: ≤ 9.42 Ω/km · 3.5 mm²: ≤ 5.30 Ω/km · 5.5 mm²: ≤ 3.40 Ω/km
Insulation resistance (20 °C)
≥ 1000 MΩ·km (SCP) · ≥ 50 MΩ·km (SYP)

Thermal

Max. conductor temperature
+85 °C / +90 °C continuous (SCP EP-rubber) · +60 °C / +75 °C continuous (SYP vinyl)
Short-circuit temperature
+250 °C (SCP thermoset EPR) · +150 °C (SYP thermoplastic PVC)
Ambient temperature range
−25 °C to +80 °C (SCP) · −15 °C to +60 °C (SYP)

Mechanical

Min. bending radius, fixed
4 × overall diameter
Standard JIS cross-sections
0.75, 1.25, 2.0, 3.5 and 5.5 mm² (plus IEC 1.5, 2.5 and 4.0 mm² equivalents)

Resistance

Flame retardance
JIS C 3005 / IEC 60332-1-2 self-extinguishing vertical flame test
Oil & humidity resistance
Resistant to marine engine-room oil mist, condensation and salt-laden air

Reference standards

Primary standard
JIS C 3410 (Japanese Industrial Standard for Shipboard Cables)
IEC alignment
IEC 60092-350 & IEC 60092-353
Marine society scope
Accepted by NK, ABS, DNV, LR, BV and CCS for internal switchboard wiring
RoHS & SOLAS
RoHS 2 & SOLAS asbestos-free compliant

Identification

Insulation colours
White, Black, Red, Blue, Yellow, Green, Brown or Grey
Surface marking
TEBAOFLEX JIS C 3410 SCP / SYP 250V [Size]
Customs tariff (HS)
8544.49 (insulated conductors ≤ 1000 V)

Sizes

14 standard SCP / SYP configurations

Typical JIS C 3410 (250 V Marine Switchboard Wire) outer diameter limits, copper content and cable weight.

Dimensions & weights
Order designationCores × mm² / AWGAWG ≈Outer Ø min
mm		Outer Ø max
mm		Copper
kg/km		Weight ≈
kg/km		Min. bend R
mm		Enquiry
SCP 250 V EP-Rubber Switchboard Wires (+85/+90 °C, JIS C 3410)
SCP 250V 1×0.751×0.75182.93.271713
SCP 250V 1×1.251×1.25163.33.6122314
SCP 250V 1×1.51×1.5163.53.8142715
SCP 250V 1×2.01×2.0143.84.1193316
SCP 250V 1×2.51×2.5144.04.4243918
SCP 250V 1×3.51×3.5124.54.9335220
SCP 250V 1×5.51×5.5105.25.7527623
SYP 250 V Flame-Retardant Vinyl Switchboard Wires (JIS C 3410)
SYP 250V 1×0.751×0.75182.52.771311
SYP 250V 1×1.251×1.25162.93.1121912
SYP 250V 1×1.51×1.5163.03.3142213
SYP 250V 1×2.01×2.0143.33.6192814
SYP 250V 1×2.51×2.5143.63.9243416
SYP 250V 1×3.51×3.5124.04.4334618
SYP 250V 1×5.51×5.5104.85.2526921
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Dimensions and weights are typical values per JIS C 3410 (250 V Marine Switchboard Wire). Minimum fixed bending radius shown is 4 × OD.

Reel check

Will it fit your machine?

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

Check results

Drum core 300 mm ≥ 28 mmBending radius OK (4 × OD 3.6 mm)
Minimum bending radius
14 mm
Min. drum core diameter
≈ 28 mm
Cable weight on drum
1.2 kg
Copper content
0.6 kg
Indicative only: based on the datasheet outer diameter and 4 × 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.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
AC dielectric voltage test1.5 kV AC (50/60 Hz)Every manufactured length
Conductor DC resistanceIEC 60228 / ASTM (tinned copper)Every manufactured length
Sample tests
Flame propagation testIEC 60332-1-2 / UL VW-1 / ISO 6722-1Per production batch
Insulation & sheath material physical propertiesJIS C 3410 (250 V Marine Switchboard Wire)Type approval

Inspection certificate

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

Product approvals

JIS C 3410 (250 V Marine Switchboard Wire)CE · RoHS 2 (2011/65/EU) · REACH

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX JIS C 3410 SCP / SYP 250V [Size]
Delivery form
Export wooden drums, reels or coils, cut-to-length on request
Packaging
Heat-treated ISPM-15 timber drums or spools with sealed ends
Conductor / colour options
Custom core counts, stripe combinations or cut harnesses on request

Technical documents

Downloads

PDFSCP / SYP JIS Shipboard Equipment Wire – technical datasheet14 sizes · construction, technical data, approvalsXLSXSCP / SYP spec data (Excel)All 14 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.

What is the difference between SCP and SYP in JIS C 3410?
Under JIS C 3410 ('S' = Switchboard wire), 'SCP' uses thermoset ethylene-propylene rubber ('P') core insulation with a protective polychloroprene ('C') outer layer rated +85/+90 °C, whereas 'SYP' uses thermoplastic flame-retardant vinyl ('Y' = PVC) insulation for compact +60/+75 °C panel wiring.
When should marine panel builders choose SCP over SYP?
Choose SCP for main switchboards (MSB), motor starter cubicles and engine-room local panels where ambient temperatures are high and thermoset cross-linked insulation prevents shrinkage or melting at high-current terminal lugs. Choose SYP for low-current relay logic, indicator lamps and bridge mimic panels where smaller wire diameter is preferred.
Why are sizes 1.25 mm², 2.0 mm², 3.5 mm² and 5.5 mm² listed alongside 1.5 mm² and 2.5 mm²?
Traditional Japanese marine switchboards and JIS ring/fork crimp terminals are sized in metric JIS steps (0.75, 1.25, 2.0, 3.5, 5.5 mm²), while IEC-aligned vessels use 0.75, 1.5, 2.5, 4.0 and 6.0 mm². Both series are available.
Can SCP or SYP be routed outside the switchboard cabinet?
No. SCP and SYP are single-core internal switchboard and console hook-up wires. For external shipboard cable runs between cabinets and field equipment, use sheathed/armoured MPY, MPYC or MPYCY control cables.

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01Selected sizes

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02Reel & motion

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03Message for our engineers

SCP / SYP JIS Shipboard Equipment Wire

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:
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