Xinya Blog / Oct 1, 2026
VCT vs VCTFK vs VFF vs VSF: PSE and JIS Cable Guide
Tags: JIS C 3306, JIS C 3312, PSE wire, VCT cable, VCTFK cable, VFF cable, VSF cable
VCT, VCTFK, VFF and VSF are JIS-style PVC cables frequently requested for the Japanese market and for appliances, office equipment and power cords. They are not interchangeable because voltage, cable shape, core construction and applicable standard differ.
This guide compares the published catalogue data and explains what to confirm before ordering. See the complete PSE and JIS wire family for the available styles.
VCT, VCTFK, VFF and VSF at a glance
| Style | Published voltage | Temperature | Construction | Published standard or size data | Typical use |
|---|---|---|---|---|---|
| VCT | 600 V | 60 °C VCT; 75 °C HVCT | PVC-insulated, PVC-sheathed flexible multicore cable | JIS C 3312; 0.75-2.0 mm² in the published summary | Higher-voltage flexible multicore power and control connections. |
| VCTFK | 300 V | 60 °C VCTFK; 75 °C HVCTFK | Oval flexible multicore cable | JIS C 3306; confirm the exact size in the construction table | Compact oval cords for appliances and equipment where a flat profile is useful. |
| VFF | 300 V | 60 °C VFF; 75 °C HVFF | PVC flat flexible cord | JIS C 3306; 0.5-2.0 mm² in the published summary | Flat power cords and compact appliance wiring. |
| VSF | 300 V | 60 °C VSF; 75 °C HVSF | PVC-insulated flexible single-core cord | JIS C 3306; 0.5-2.0 mm² in the published summary | Single-core flexible cord for appliance and equipment wiring. |
The catalogue shows the PS E JET marking on selected VCT, VCTFK, VFF and VSF constructions. No PSE certificate number is published in the supplied source. Treat the PS E JET marking as a source catalogue fact and ask for the exact certificate and construction confirmation before relying on it for a regulated shipment.
VCT: 600 V flexible multicore cable
VCT is the higher-voltage option in this group. It is a PVC-insulated and PVC-sheathed flexible multicore cable to JIS C 3312. The normal VCT construction is published at 60 °C, while HVCT is published at 75 °C.
Review core count, conductor size, overall diameter and bend radius before selecting VCT. The higher voltage rating does not remove the need to confirm the exact category and marking required by the destination.
VCTFK: oval flexible multicore cable
VCTFK is published at 300 V with a 60 °C VCTFK rating and a 75 °C HVCTFK rating. Its oval shape can be useful in compact appliances and equipment where a round cable would take up more space. The applicable standard is JIS C 3306.
Confirm the exact core count and size in the construction table. A cable that fits the connector may still require a different conductor construction for the current and voltage drop of the application.
VFF: flat flexible cord
VFF is a 300 V PVC flat flexible cord to JIS C 3306, published from 0.5-2.0 mm² in the catalogue summary. VFF is rated 60 °C, while HVFF is rated 75 °C.
VFF is selected when a flat profile is required. Check whether the application needs two-core or multi-core construction and confirm the final outside dimensions before tooling or connector selection.
VSF: single-core flexible cord
VSF is a 300 V PVC-insulated flexible single-core cord to JIS C 3306, published from 0.5-2.0 mm². VSF is rated 60 °C and HVSF is rated 75 °C.
Because VSF is single-core, the return conductor and grounding arrangement must be planned separately. Confirm the connector, terminal and marking requirements before ordering.
How to choose a PSE or JIS cable
- Confirm the required standard: JIS C 3306 or JIS C 3312.
- Check the voltage and temperature rating of the exact style.
- Select round, oval, flat or single-core construction based on the equipment design.
- Confirm conductor size, core count and overall diameter.
- Review flexibility, flex life and the routing environment.
- Confirm the source marking and the exact certificate documentation required.
- Check the destination market and the end-product approval in writing.
PSE marking and certification status
The manufacturer catalogue shows the PS E JET marking on selected JIS constructions, but no PSE certificate number is published. If a buyer or authority requires a PSE certificate, request the exact construction and certificate scope before the order is placed. See the compliance page for the available records.
FAQ
What is the difference between VCT and VCTFK?
VCT is a 600 V flexible multicore cable under JIS C 3312. VCTFK is a 300 V oval flexible multicore cable under JIS C 3306. Confirm the exact construction and application requirements.
Is VFF the same as VSF?
No. VFF is a flat flexible cord, while VSF is a single-core flexible cord. Both are 300 V and 60 °C in the published summary, but the construction and use are different.
What should I send for a quotation?
Send the style, core count, conductor size, colour, length, voltage, temperature and destination. Include the connector or drawing if the cable is part of an assembly, and use the request a quote form.
Other harmonised cable options
If the project uses European rather than Japanese standards, compare the VDE wire family and the existing H05V-K vs H07V-K selection guide.
Review the full range: visit the PSE wire family or the complete wire catalogue.
