Shanghai Jastar Industrial Co., Ltd.
Instant · 6 kW · Under-sink 6,000 W 110 / 220 / 240 V 30 – 55 °C OEM / ODM

6 kW Instant Electric Water Heater — Under-Sink and Multi-Position, Knob or Touch

A 6 kW point-of-use unit built for the places a wall heater cannot go. It mounts vertically, inverted, under a surface or lying flat, so it fits under a kitchen sink, inside a vanity or in a utility cupboard. Hot water in about two seconds, outlet held between 30–55 °C, available with a rotary knob or touch control. Stainless steel cup or cast aluminium element, wired to the 40 A leakage breaker supplied.

Model
JS-X6
Rated power
6,000 W
Voltage / Frequency
110 / 220 / 240 V ~ · 50 / 60 Hz
Heating element
Stainless steel cup or cast aluminium, 6 kW (selectable)
Hot water in
≈ 2 seconds
Temperature range
30 – 55 °C
Control
Rotary knob or touch control
Mounting
Vertical, inverted, under-surface or flat
Power cable
≥ 4 mm² copper core
Power connection
No plug · 40 A leakage breaker supplied
Unit size
198 × 82 × 277 mm
Carton
5 pcs · 660 × 375 × 385 mm · 14 kg

MOQ 100 pcs for custom panel colour, pattern and logo · 1,000 pcs for custom packaging. Samples from 1 pc — the sample price is higher than the bulk price, and we refund the difference once you place a bulk order within 30 days of receiving the sample. Prices are quoted per order, EXW Shanghai — tell us your quantity and destination port and we will reply within one working day.

CE RoHS 100% tested before shipment

Why this model

Four mounting positions, one unit

Upright, inverted, under a surface or lying flat — the installer picks.

Four mounting positions

Four mounting positions

Upright, inverted, fixed under a worktop or laid flat: the same unit covers a wall in a bathroom and the inside of a kitchen cupboard, which cuts the number of variants a stockist has to hold.

Sits inside the cupboard

Sits inside the cupboard

At 198 × 82 × 277 mm the body fits beside the waste trap with no unit on show above the worktop and no support frame needed.

Stainless steel chamber, copper ports

Stainless steel chamber, copper ports

The cutaway shows the water path: a stainless steel heating chamber with copper inlet and outlet and the control board kept away from the wet side.

6 kW tankless, on 4 mm²

6 kW tankless, on 4 mm²

On-demand heating reaches the outlet in about two seconds, and the ≥ 4 mm² copper cable demand keeps the installation cost down in older buildings.

Specifications

Technical data — JS-X6

Every unit is pressure-tested and function-tested before packing. Custom panel finish and power connection available for OEM orders.

Electrical & performance
Rated power6,000 W
Rated voltage110 / 220 / 240 V ~ · 50 / 60 Hz
Heating elementStainless steel cup or cast aluminium, 6 kW (selectable)
Heating time≈ 2 seconds
Temperature range30 – 55 °C
ControlRotary knob or touch control
MountingVertical, inverted, under-surface or flat
Power cable≥ 4 mm² copper core
Power connectionNo plug · wired direct, 40 A leakage breaker supplied
ProtectionWater–electricity separation · Over-temperature protection · Dry-heat protection · Leakage protection
Waterproof ratingIPX4
CertificationCE · RoHS
Water, dimensions & packing
Unit size198 × 82 × 277 mm
Inner box360 × 125 × 355 mm
Net / gross per unit2 kg / 2.8 kg
Pcs per carton5 pcs
Carton size660 × 375 × 385 mm
Gross weight14 kg
Body colourWhite (custom on request)
LoadingLCL and FCL both available

OEM & ODM

Make it your own brand

We build for importers, wholesalers and own-brand retailers — from a panel colour change to a fully customised product and gift box.

Panel colour, pattern & logo

Body colour and front panel in your colour and pattern, with your logo printed or laser-etched. Artwork proof before mass production.

MOQ 100 pcs

Packaging

Custom printed inner box and master carton, colour or gift box, barcode and retail labelling. Export cartons are drop-tested.

MOQ 1,000 pcs

Voltage & plug standard

Voltage build (110 / 220 / 240 V, AC 380 V for the three-phase unit) and plug standard (EU / US / UK / AU / Africa) matched to your market.

MOQ 100 pcs

Documents & certification

CE and RoHS test reports, product photos, specification sheets and packing lists for your own listings and customs clearance.

Ready to share

Samples & price protection

Test one unit before you commit to a container

Every model is available as a sample, and every price step you reach is paid back to you — the sample itself included.

Samples from 1 pc

Order a single unit to test it, open it up and show your own customers. No minimum quantity, any model in the range, shipped with its CE and RoHS test reports.

MOQ 1 pc

The sample price difference comes back

A single unit is charged above the bulk price, because of one-off handling and air freight. Place a bulk order for the same model within 30 days of receiving the sample and we refund the difference.

30-day rebate

Earlier shipments are rebated too

Our four price tiers — 10–99 / 100–999 / 1,000–9,999 / 10,000+ pcs — are counted cumulatively over the 30 days after you receive the goods. Reach a higher tier and we refund the difference on the units you have already shipped.

Cumulative over 30 days

Tell us which model you want to test and we will send the sample invoice the same working day.

Request a quotation for JS-X6

Send us your quantity, destination port and power connection requirements — we will come back with prices and lead time within one working day.

Product Catalog 2026

Browse the full range — instant water heaters, hot water taps and bathroom & desk heaters — in one PDF.