MICROCRYSTALLINE HEATING ELEMENT
LL-JRB-004B
High-Output Ceramic Heating Element
The higher-power option in the shared 004 housing for appliances whose supply, water path and protection logic support 3000 W.
LL-JRB-004B is the heating section of an OEM water appliance. It combines the heating path, water housing, inlet/outlet sensing and dual temperature protection. The appliance supplies the pump, valves, main controller and system-level safety logic.
3000 Wrated power +5% / −10%
50 × 36 × 155 mmproduct envelope
>10,000 hrated service life
≥97%specified thermal efficiency
See the complete product before the engineering details
The sequence covers the assembled element, alternate view, interfaces, installation envelope, internal structure and protection design.
01 · Complete productWater inletOutlet upwardNTC · power · protection03 · Water & electrical interfaces
50 × 36 × 155 mmVertical · outlet upward04 · Dimensions & installation
05 · Exploded internal structure
125°CAuto reset145°CManual reset
06 · Protection architecture
Why this model enters a shortlist
The listed flow is a room-temperature water-path value.
It is not a guaranteed hot-water output. Final outlet temperature and hot-water flow depend on inlet temperature, target temperature, pump curve, voltage, control logic and duty cycle, and must be validated in the target appliance.
The product boundary is clear before integration
LELING supplies the heating element and its component-level protection. The OEM appliance completes water delivery, power control and whole-system safety.
Included in the element
- Heating tube and water housing
- Inlet and outlet NTC sensing points
- Auto-reset protector 125°C
- Manual-reset protector 145°C
Provided by the appliance
- Pump and flow control
- Inlet and outlet valves
- Main controller and user interface
- System safety, grounding and compliance
Interfaces and required installation direction
Install vertically with the water outlet facing upward. Confirm water connectors, NTC terminals, power terminals, grounding, cable routing and the dry-heating protection sequence in the appliance drawing review.
Water inletOutlet upward220 V AC · NTC50 × 36 × 155 mmVertical installation required
Published engineering specification
| Model | LL-JRB-004B |
|---|---|
| Product type | Heating element, not a complete heating module |
| Rated supply | 220 V AC ±10%, 50 Hz |
| Rated power | 3000 W, +5% / −10% |
| Dimensions | 50 × 36 × 155 mm |
| Rated pressure | 0 MPa |
| Thermal efficiency | ≥97% |
| Room-temperature water flow | 2300 mL/min |
| Rated service life | >10,000 h |
| Heating path / housing | Microcrystalline ceramic tube · nylon housing |
| Installation | Vertical, outlet upward |
| NTC sensors | Inlet + outlet, R25=100K±1%, B25/50=3950±1% |
| Dielectric strength | 2000 V AC / 60 s, leakage ≤5 mA |
| Leakage current | ≤0.5 mA at 234 V / 10 s |
| Ground resistance | <0.1 Ω at 25 A / 10 s |
| Leak test | 18 kPa / 5 s, leakage ≤15 mL |
| Temperature protection | 125°C auto reset + 145°C manual reset |
Integration safety note
Dry heating is prohibited. Water flow and protection sequencing must be established by the appliance controller.
LL-JRB-004B integration questions
Is this a complete instant-heating module?
No. It is a heating element. The appliance must provide the pump, valves, main controller, power architecture and system-level protection.
Can the room-temperature flow be used as hot-water output?
No. It describes the water-path test at room temperature. Hot-water output must be calculated and validated for the required temperature rise and appliance cycle.
How should it be installed?
Vertically, with the outlet facing upward. The final drawing review must also confirm terminals, grounding, cable routing and available space.
Can it run without water?
No. Dry heating is prohibited. The appliance must establish water flow and protection logic before energizing the heater.
Check LL-JRB-004B against your water path and duty cycle.
Share inlet temperature, target outlet temperature, required flow, supply, available vertical space, control architecture and annual quantity.