TY002: 3-Part Junction Box for On-site Potting (25A/30A, for 500W~750W Modules)
1. Proven & Mature Technology Platform
Market-Validated Design: The TY002 represents the industry-standard approach to solar panel junction box assembly that has been used in gigawatts of solar installations worldwide. Its geometry and soldering pads are designed to match the most common busbar spacing on the market.
Universal Compatibility: This open solar panel junction box is fully compatible with the mainstream 182mm and 210mm half-cut module layouts. If your production line already has tooling set up for standard split solar panel junction boxes, the TY002 can be dropped in with minimal adjustment.
2. Full Control Over the Potting Process
Choose Your Own Silicone: Because the TY002 is not pre-potted, you are not locked into a specific glue supplier. You can select the thermal conductive silicone that best matches your cost targets and thermal simulation requirements .
Optimized for Your Equipment: If you have a high-speed automatic dispensing line, the open cavity design of the TY002 allows for quick, direct injection of the potting agent without obstruction.
3. Cost-Effective for High-Volume Production
Lower Upfront Component Cost: By removing the factory potting step from the supplier side, the TY002 typically offers a lower unit price compared to pre-potted alternatives.
Simplified Logistics: The open structure allows for tighter, more compact packaging during shipping, reducing freight costs and storage space in your warehouse.
4. Reliable Heat Dissipation for High Currents
The TY002 retains the classic 3-part split design, separating the three bypass diodes to prevent heat concentration.
Once properly potted by your team, the high-thermal-conductivity silicone fills the cavity completely, ensuring the heat from the diode pins is efficiently transferred to the ambient air, supporting reliable 25A/30A operation for 500W+ max. 750W PV modules.
II. Technical Specifications
| Parameter | Value |
| Type | 3-Part ( Split ) |
| Potting Status | Open / Un-Potted ( On-site Potting Requied ) |
| Rated Current | 20A / 25A / 30A |
| Max System Voltage | 1500V DC |
| Applicable Module Power | 500W ~ 750W |
| Protection Grade | IP68 ( After Potting ) |
| Bypass Diode | Schottky Diode |
| Cable Available | 4.0 mm2 |
| Operating Temperature | -40℃ ~ +95℃ |
| Material | V0 Flame - Retardant PPO |
| Metal Material | Tin-Plated Copper |
| Compliance | IEC 62790 /UL 373J ( TUV CERTIFICATE ) |
III. Drawing...Solar Panel Junction Box
| Representative Model | Structure | Potting Method | Max Current | Applicable Power | Core Advantages |
| PV-TY806 | One-piece | Pre-potting | 16A | ≤400W | Low cost, high efficiency, ready to use out of the box |
| PV-TY001NEW | Three-pieces | Pre-potting | 30A | ≥500W | High power, no potting process required, excellent heat dissipation |
| PV-TY002 | Three-pieces | On-site Potting | 30A | ≥500W | High versatility, flexible configuration |
Q1: What is the difference between the TY002 and the TY001NEW? How do I choose?
A: Both are 3-part solar panel junction boxes for 500W+ panels with the same electrical ratings (20A/25A/30A). The only key difference is the potting process:
TY001NEW (Pre-potted): Sealed at the factory with zero bubbles. Best for "Solder-and-Go" production, eliminating potting lines and ensuring maximum consistency. Choose this if you want the lowest risk and fastest throughput.
TY002 (On-site Potting): Arrives open and empty. You inject the silicone yourself. Best for factories with mature potting equipment looking to control glue costs and maintain supply chain flexibility. Choose this if you have a high-volume line and want to optimize the BOM.
Note: If your team is new to potting or you struggle with air bubbles, we strongly recommend starting with the TY001NEW.
Q2: What type of glue (potting agent) should I use for the TY002?
A: We recommend using a high-quality two-component (A/B) thermal conductive silicone with a mixing ratio of 1:1 or 10:1 (as per your dispensing machine). Ideal specifications:
Thermal Conductivity: ≥0.7 W/m⋅K≥0.7W/m⋅K (Higher is better for 30A versions)
Cure Type: Room temperature cure or heat-accelerated cure.
Hardness: Shore A 30~45 after curing (soft enough to absorb stress, hard enough to lock the pins in place).
Avoid using cheap epoxy or non-thermal conductive glues, as they may cause the diodes to overheat.
Q3: Is the TY002 suitable for bifacial (double-glass) pv modules?
A: Yes. Like the TY001NEW, the TY002 uses the 3-part split design with a low-profile housing, making it suitable for bifacial solar modules where rear-side shading must be minimized. Just ensure that after your on-site potting process, the gel forms a smooth, uniform surface without overflowing onto the glass backsheet.
Q4: What is the recommended curing time after potting the TY002?
A: Curing time depends entirely on the specific silicone brand you use. Typically, two-component silicones will set (tack-free) in 10-20 minutes and reach full physical properties after 24 hours at room temperature. We recommend ensuring the pv modules are not moved or stacked until the silicone has completely cured to prevent leakage paths.
Q5: Can I order the TY002 with custom cable lengths?
A: Yes. The standard cable lengths are 90cm or 120cm, but we support full customization for bulk orders. You can specify the cable gauge (4mm² or 6mm²), the connector type (MC4, MC4-Evo2, etc.), and the housing color to match your brand.
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