Product Identification
Product NameJB2 PV Junction Box
BrandTreasol
ModelJB2
CategoryPV Junction Box
PV Junction Box · Model JB2
JB2 PV Junction Box
Last updated: October 2026
JB2 is a 1000 V PV junction box designed for solar photovoltaic modules, featuring a double fixed connection structure, 5 A rated current and IP65 protection. It uses tin-plated copper contacts and PPO insulation, with support for 1.5, 2.5 and 4.0 mm² conductors.
1000 V DC
5 A
IP65
<0.5 mΩ
1.5–4 mm²
-40 °C to +85 °C
BrandTreasol
ModelJB2
Product TypePV Junction Box
JB2 PV Junction Box at a glance
What is the JB2 PV Junction Box?
JB2 is a 1000 V PV junction box designed for solar photovoltaic modules, featuring a double fixed connection structure, 5 A rated current and IP65 protection. It uses tin-plated copper contacts and PPO insulation, with support for 1.5, 2.5 and 4.0 mm² conductors.
Voltage1000 V DC
Current5 A
ProtectionIP65
Cable Range1.5–4 mm²
Product Overview
About the JB2 PV Junction Box
JB2 PV junction box for solar panels: 1000 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
JB2 PV Junction Box
JB2 is a photovoltaic junction box designed for electrical connection within solar PV module assemblies. It provides a protected connection point between the module\u2019s internal conductors and the external PV circuit.
The JB2 is rated for 5 A, with a voltage rating of 1000 V according to TÜV specifications and 600 V according to UL specifications. It uses tin-plated copper contacts and PPO insulation material, with a specified contact resistance of less than 0.5 mΩ.
The junction box features a double fixed connection structure and supports conductor cross sections of 1.5, 2.5 and 4.0 mm², corresponding to 16, 14 and 12 AWG. With IP65 protection and an operating temperature range of -40 °C to +85 °C, JB2 is designed for outdoor photovoltaic module applications.
Technical Specifications
JB2 PV Junction Box technical data
Electrical, mechanical, material and environmental specifications for product selection and engineering review.
Rated Voltage1000 V DCPhotovoltaic DC system
Rated Current5 AMaximum rated current
ProtectionIP65Outdoor protection rating
Cable Size1.5–4 mm²Supported solar cable
Temperature-40 °C to +85 °COperating range
| Parameter | Value |
|---|---|
| Electrical | |
| Rated Current | 5 A |
| Rated Voltage | 1000 V (TUV) 600 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 | 16 / 14/12AWG 1.5/2.5/4.0mm² |
| Environmental | |
| Degree Of Protection | IP 65 |
| Ambient Temperature Range | -40 °C~ +85 °C |
| Flame Class | UL 94 V-0 |
Compatibility
MC4-compatible PV connection design
JB2 PV Junction Box is designed to match commonly used photovoltaic connection systems and provide secure electrical and mechanical connections.
Connector compatibility
Model: JB2
Product Type: PV Junction Box
Compatibility Type: MC4-compatible solar cable connector
For safety and certification compliance, connectors from the same manufacturer and approved connector combinations should be used within the same PV connection system. Mixing connectors from different manufacturers should only be considered when compatibility has been verified and permitted by the applicable certification requirements.
Applications
Photovoltaic application scenarios
JB2 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
JB2 PV Junction Box product certifications
Certification information associated with the JB2 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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