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MMJ 300/500 V Installation Cable

MMJ is a 300/500 V PVC-sheathed installation cable to SFS 2091 for fixed surface and concealed building wiring. The range covers 2–5 cores from 1.5 to 35 mm², with CPR Eca fire performance for construction projects.

Typical Scenarios
Key Specifications
  • Fixed surface wiring in residential and commercial buildings
  • Flush-mounted wiring in walls and building structures
  • Installation in plaster-covered slots where permitted by SFS 6000
  • Auxiliary and building circuits associated with residential or commercial PV installations

 

  • Rated voltage: 300/500 V AC
  • Available range: 2, 3, 4 and 5 cores; 1.5 / 2.5 / 4 / 6 / 10 / 16 / 25 / 35 mm²
  • Conductor: copper; Class 1 or Class 2 according to IEC 60228 depending on size / construction
  • Insulation: PVC TI1
  • Inner sheath: PVC TM1
  • Outer sheath: PVC TM1
  • Fixed-installation temperature range: -40°C to +70°C
  • Maximum conductor temperature: +70°C
  • Maximum short-circuit conductor temperature: +160°C for up to 5 s
  • Test voltage: 2 kV AC, 50 Hz, 5 min
  • Minimum bending radius, fixed installation: 6 × overall diameter
  • Standards: SFS 2091:2011 / HD 21.4 S2 / IEC 60227-4
  • CPR: Eca

 

Specification:
Color Option:
Cable Option:
Certifications & complance:

Product Highlights

Surface and Concealed Wiring

MMJ is used for fixed building circuits that may move between surface-mounted and concealed routes within the same project. It can be installed in residential, commercial and industrial environments and is also suitable for concrete or plaster-covered routes where the installation method permits. This gives contractors one familiar 300/500 V cable family across a wide range of Finnish building-wiring situations.

Broad Size Range

The HORNOUR MMJ/MMO construction covers 2-, 3-, 4- and 5-core cables from 1.5 mm² to 35 mm². That range extends the product beyond small final circuits and allows the same cable family to serve larger fixed distribution duties. For contractors and wholesalers, a broader size range simplifies specification and stocking while keeping the construction and installation practice consistent.

Eca Fire Performance

MMJ is available with CPR Eca reaction-to-fire performance for permanent installation in construction works. This gives designers and contractors a clearly defined fire classification at the cable-selection stage and supports straightforward matching to the building’s specified reaction-to-fire requirement without changing the basic SFS 2091 cable family.

Application Areas

Designed for Residential fixed wiring, Commercial building wiring, Flush-mounted installation and Surface-mounted installation.

Residential fixed wiring

Commercial building wiring

Flush-mounted installation

Surface-mounted installation

Technical Data

FAQ

Recommend

GENERAL DATA
  • PVC-sheathed installation cable according to SFS 2091:2011 / HD 21.4 S2 / IEC 60227-4
  • Temperature range, fixed installation: -40°C to +70°C
  • Permissible conductor operating temperature: +70°C
  • Maximum short-circuit conductor temperature: +160°C for up to 5 s
  • Nominal voltage: AC U₀/U 300/500 V
  • Test voltage: 2 kV AC, 50 Hz, 5 min
  • Minimum bending radius, fixed installation: 6 × overall diameter
  • Fire performance: CPR Eca

 

CABLE STRUCTURE
  • Bare copper conductor, annealed, Class 1 or Class 2 according to IEC 60228 depending on size / ordered construction
  • Insulation: PVC compound TI1 according to EN 50363-3
  • Core identification according to DIN VDE 0293-308 / 0276-603
  • Cores stranded in concentric layers
  • Inner sheath: PVC compound TM1 according to EN 50363-4-1
  • Outer sheath: PVC compound TM1 according to EN 50363-4-1

 

TESTS
  • Conductor construction and resistance according to IEC 60228
  • Heat-shock test according to IEC 60811-509
  • Impulse test according to IEC 60230
  • Ageing properties according to IEC 60811-501 / IEC 60811-401
  • Loss-of-mass test according to IEC 60811-409
  • High-temperature pressure test according to IEC 60811-508
  • Low-temperature tests according to IEC 60811-504 / IEC 60811-505 / IEC 60811-506
  • Water-absorption test according to IEC 60811-402
  • Fire performance according to EN 50575:2014+A1:2016

 

APPLICATION
  • For fixed installation in domestic, commercial or industrial settings in dry, damp or wet environments and directly in concrete
  • Not suitable for direct sunlight without additional protection
  • Suitable for fixed surface and flush-mounted installation, including plaster-covered slots where permitted by SFS 6000

 

REGULATORY COMPLIANCE
  • Low Voltage Directive 2014/35/EU
  • RoHS Directive 2015/65/EU
  • Reaction-to-fire classification: Eca according to EN 13501-6

 

 

DIMENSIONS & PRODUCT DATA

 

Description Cross Section mm² Conductor type RE/RM OD of conductor mm Thickness of insulation mm Thickness of inner sheath mm Thickness of outer sheath mm Cable overall diameter mm Current Capacity in air A Cu weight kg/km Cable weight kg/km
MMO/MMJ 300/500V 2 × 1.5 RE 1.6 0.7 0.4 1.2 8.7 17.5 29 125
MMO/MMJ 300/500V 2 × 2.5 RE 2.0 0.8 0.4 1.2 10.0 24 48 165
MMO/MMJ 300/500V 2 × 4 RE 2.5 0.8 0.4 1.2 11.0 32 77 215
MMO/MMJ 300/500V 2 × 6 RE 3.1 0.8 0.4 1.2 12.2 41 115 280
MMO/MMJ 300/500V 2 × 10 RE 4.0 1.0 0.6 1.4 15.4 57 192 455
MMO/MMJ 300/500V 2 × 16 RM 5.0 1.0 0.6 1.4 17.4 76 307 630
MMO/MMJ 300/500V 2 × 25 RM 6.3 1.2 0.8 1.4 21.0 96 480 950
MMO/MMJ 300/500V 2 × 35 RM 7.1 1.2 1.0 1.6 23.2 119 672 1250
MMO/MMJ 300/500V 3 × 1.5 RE 1.6 0.7 0.4 1.2 9.1 17.5 43 135
MMO/MMJ 300/500V 3 × 2.5 RE 2.0 0.8 0.4 1.2 10.4 24 72 190
MMO/MMJ 300/500V 3 × 4 RE 2.5 0.8 0.4 1.2 11.8 32 115 258
MMO/MMJ 300/500V 3 × 6 RE 3.1 0.8 0.4 1.4 13.0 41 173 337
MMO/MMJ 300/500V 3 × 10 RE 4.0 1.0 0.6 1.4 15.9 57 288 528
MMO/MMJ 300/500V 3 × 16 RM 5.0 1.0 0.8 1.4 18.1 76 461 731
MMO/MMJ 300/500V 3 × 25 RM 6.3 1.2 0.8 1.6 22.2 96 720 1115
MMO/MMJ 300/500V 3 × 35 RM 7.1 1.2 1.0 1.6 24.5 119 1008 1462
MMO/MMJ 300/500V 4 × 1.5 RE 1.6 0.7 0.4 1.2 9.8 17.5 58 160
MMO/MMJ 300/500V 4 × 2.5 RE 2.0 0.8 0.4 1.2 11.3 24 96 230
MMO/MMJ 300/500V 4 × 4 RE 2.5 0.8 0.4 1.4 13.0 32 154 330
MMO/MMJ 300/500V 4 × 6 RE 3.1 0.8 0.6 1.4 15.1 41 230 460
MMO/MMJ 300/500V 4 × 10 RE 4.0 1.0 0.6 1.4 17.6 57 384 680
MMO/MMJ 300/500V 4 × 16 RM 5.0 1.0 0.8 1.4 21.3 76 614 1048
MMO/MMJ 300/500V 4 × 25 RM 6.3 1.2 1.0 1.6 25.8 96 960 1649
MMO/MMJ 300/500V 4 × 35 RM 7.1 1.2 1.0 1.6 28.5 119 1344 2000
MMO/MMJ 300/500V 5 × 1.5 RE 1.6 0.7 0.4 1.2 10.3 17.5 72 190
MMO/MMJ 300/500V 5 × 2.5 RE 2.0 0.8 0.4 1.2 12.0 24 120 270
MMO/MMJ 300/500V 5 × 4 RE 2.5 0.8 0.6 1.4 14.5 32 192 410
MMO/MMJ 300/500V 5 × 6 RE 3.1 0.8 0.6 1.4 16.1 41 288 540
MMO/MMJ 300/500V 5 × 10 RE 4.0 1.0 0.6 1.4 19.2 57 480 850
MMO/MMJ 300/500V 5 × 16 RM 5.0 1.0 0.8 1.6 23.4 76 768 1280
MMO/MMJ 300/500V 5 × 25 RM 6.3 1.2 1.0 1.6 28.7 96 1200 1970
MMO/MMJ 300/500V 5 × 35 RM 7.1 1.2 1.2 1.6 31.9 119 1680 2500

The table covers 2–5 core constructions from 1.5 to 35 mm².

 

Download TDS

Can MMJ replace NYM, or vice versa?

Not automatically. MMJ is specified in the Finnish market under SFS 2091, while NYM belongs to a different product and standards environment. The project specification, core arrangement, installation method and fire requirement should be checked before either cable is proposed as a substitute.

Can you check an equivalent cable from another manufacturer?

Yes. Send the exact cable designation and, where possible, the existing datasheet or project specification. We compare conductor material, construction, voltage rating, standards and the requirements that affect the installation before confirming whether an equivalent can be offered.

What if the required size, core count or construction is not shown on the website?

Send the exact requirement. The website does not represent every possible production combination. We will check whether the construction can be supplied and whether the required standards or certification scope also cover that version before it is quoted.