Product Identification
Product NameJT3 PV Junction Box
BrandTreasol
ModelJT3
CategoryPV Junction Box
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PV Junction Box · Model JT3
JT3 PV Junction Box
Last updated: October 2026
JT3 is a PV junction box designed for photovoltaic module applications, with a 5 A rated current, IP65 protection and support for 2.5 / 4.0 mm² (14 / 12 AWG) conductors. It features tin-plated copper contacts, PPO insulation and an operating temperature range of -40 °C to +85 °C.
1500 V DC
5 A
IP65
<0.5 mΩ
2.5–4 mm²
-40 °C to +85 °C
BrandTreasol
ModelJT3
Product TypePV Junction Box
JT3 PV Junction Box at a glance
What is the JT3 PV Junction Box?
JT3 is a PV junction box designed for photovoltaic module applications, with a 5 A rated current, IP65 protection and support for 2.5 / 4.0 mm² (14 / 12 AWG) conductors. It features tin-plated copper contacts, PPO insulation and an operating temperature range of -40 °C to +85 °C.
Voltage1500 V DC
Current5 A
ProtectionIP65
Cable Range2.5–4 mm²
Product Overview
About the JT3 PV Junction Box
JT3 PV junction box for solar panels: 1500 V TÜV, 5 A, IP65, tin-plated copper contacts. Request a quote.
Key Features
All connections use a double-lock connection
low power loss
With the capacity of anti-aging and resistance to ultraviolet radiation on the outer cover
Suitable for harsh outdoor environments
JT3 PV Junction Box
JT3 is a photovoltaic junction box designed to provide an electrical connection point within solar PV module assemblies. It connects the module’s internal conductors to the external PV circuit while providing protection for the electrical connection in outdoor operating environments.
The JT3 uses tin-plated copper contacts and PPO insulation material, with a specified contact resistance of less than 0.5 mΩ. It is rated for 5 A and is designed for conductor sizes of 2.5 / 4.0 mm² (14 / 12 AWG).
The junction box provides IP65 protection and is specified for an ambient temperature range of -40 °C to +85 °C. Its outer housing is designed to resist UV exposure and aging for outdoor photovoltaic applications.
Technical Specifications
JT3 PV Junction Box technical data
Electrical, mechanical, material and environmental specifications for product selection and engineering review.
Rated Voltage1500 V DCPhotovoltaic DC system
Rated Current5 AMaximum rated current
ProtectionIP65Outdoor protection rating
Cable Size2.5–4 mm²Supported solar cable
Temperature-40 °C to +85 °COperating range
| Parameter | Value |
|---|---|
| Electrical | |
| Rated Current | 5 A |
| Rated Voltage | 1500 V (TUV) 1000 V (UL) |
| Test Voltage | 8 kV (TUV50HZ, 1 min) |
| Contact Resistance | <0.5 mΩ |
| Safety Class | II |
| Materials & Cable | |
| Insulation Material | PPO |
| Contact Material | Copper,Tin plated |
| Conductor cross section | 14 / 12 AWG 2.5/4.0 mm² |
| Environmental | |
| Degree Of Protection | IP 65 |
| Ambient Temperature Range | -40 °C~ +85 °C |
| Flame Class | UL 94 V-0 |
Applications
Photovoltaic application scenarios
JT3 PV Junction Box is suitable for residential, commercial, utility-scale and compatible solar energy storage connection applications.
Residential Solar PV
Reliable cable connections for rooftop solar systems and residential photovoltaic installations.
Commercial & Industrial PV
Suitable for commercial rooftop systems and larger distributed PV installations requiring high-current connections.
Utility-Scale Solar Power Plants
Designed for high-voltage PV systems and large-scale solar installations where reliable outdoor connections are essential.
Solar Energy Storage
Can be used in compatible solar energy and energy storage connection applications according to system requirements.
Certifications
JT3 PV Junction Box product certifications
Certification information associated with the JT3 PV Junction Box product.
TÜV
TUV Certificate For Junction Box Module
Related Product Categories
Explore PV connection solutions
Navigate to related Treasol product categories for complete photovoltaic connection systems.
Technical Guides
Related reading
Background reading on selection, installation and quality control for this product category.
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