"Joint box with internal wiring for poles" (SBJA series) released.
Joint box with internal wiring for poles, excellent in waterproof and dustproof performance, allowing safe and easy wiring work.
The "Joint Box with Internal Wiring" (SBJA Series) has a protection rating equivalent to IP68 against water and dust, making it an optimal structure for the humid environment inside poles. It comes with pre-wired connections, ensuring safety and ease of connection, while also allowing for easy inspection. The breaker and terminal block are sealed within the box, protecting the electrical wiring from moisture and water droplets that may accumulate inside the pole. Additionally, the top cover can be opened for voltage and insulation resistance measurements. This product incorporates the resin bonding technology "AKI-Lock" developed by Polyplastics Co., Ltd. It utilizes a new technology that enables the bonding of different types of resins and between resin and rubber, which was difficult with conventional methods, resulting in improved waterproof performance compared to previous models.
basic information
<Features> The plastic box with waterproof and dustproof construction houses a breaker and terminal block, shutting out moisture and water droplets inside the pole that can cause insulation failure. 1. The breaker can be operated without opening the top cover, making installation and inspection tasks easier. 2. The protection rating against water and dust is equivalent to IP68. It can be submerged in water at a depth of 1 meter for 2 weeks without water entering the device, thus protecting the wiring even during temporary flooding due to heavy rain. Additionally, it has excellent corrosion resistance, making it ideal for connections in humid poles. 3. Because it uses a highly airtight box, there is no insulation degradation due to wiring connections. 4. With the breaker included, if a short circuit occurs on the load side, it reliably disconnects the circuit, preventing the escalation of accidents such as burning. 5. The top cover can be opened, allowing for the removal of wires from the terminal block without cutting the wiring, enabling voltage and insulation resistance measurements. 6. It has the same mounting pitch as conventional pole joint boxes (SB series), allowing for replacement.
Price range
Delivery Time
Model number/Brand name
VYAA Series Waterproof and Moisture-Proof Emergency LED Lighting Fixture
Applications/Examples of results
Factory, chemical plant, chemical factory, etc.
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Release of joint box with internal wiring (SBJA series).
Hoshi and Electric Co., Ltd. has been supplying lighting fixtures for numerous roads and tunnels since 1957, when it delivered lighting equipment for the Kanmon Tunnel, the world's first underwater tunnel at that time. Road lighting fixtures are mounted on poles, but these poles tend to accumulate moisture, leading to condensation and water droplets. Our company offers a product that protects electrical wiring from moisture and water droplets: the pole-mounted junction box (SB series), which has over 40 years of proven performance. We are now launching a new addition to our lineup, the "Junction Box with Internal Wiring for Poles" (SBJA series), which makes internal wiring for road lighting fixtures safe and easy. The "Junction Box with Internal Wiring for Poles" (SBJA series) has a protection rating equivalent to IP68 against water and dust, making it ideal for the moist environment inside poles. It comes with pre-wired connections that allow for safe and easy installation, and it is also easy to inspect. The junction box has a sealed compartment for the breaker and terminal block in some specifications, protecting the electrical wiring from moisture and water droplets that may accumulate inside the pole. Additionally, the top cover can be opened for voltage and insulation resistance measurements.
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Release of joint box with internal wiring (SBJA series)
Hoshi and Electric Co., Ltd. has been supplying lighting fixtures for numerous roads and tunnels since 1957, when it delivered lighting equipment for the Kanmon Tunnel, the world's first underwater tunnel at that time. Road lighting fixtures are mounted on poles, but these poles tend to accumulate moisture, leading to condensation and water droplets. Our company offers a product that protects electrical wiring from moisture and water droplets, the pole-mounted junction box (SB series), which has a proven track record of over 40 years. We are now launching a new addition to our lineup, the "Junction Box with Internal Wiring for Poles" (SBJA series), which makes internal wiring for road lighting fixtures safe and easy. The "Junction Box with Internal Wiring for Poles" (SBJA series) has a protection rating equivalent to IP68 for waterproofing and dustproofing, making it ideal for the moist environment inside poles. It comes with wiring for safe and easy connections, and inspections are straightforward. The junction box also features a sealed terminal block for the breaker and some specifications, protecting electrical wiring from moisture and water droplets that accumulate inside the pole. Additionally, the top cover can be opened for voltage and insulation resistance measurements.
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Hoshia Electric has established itself as a top manufacturer in various business fields, including information display systems such as road information boards, industrial lighting known for its waterproof and explosion-proof features under the name "Water Pearl," tunnel lighting that began with the full-scale installation in the Kanmon Tunnel, and resin products represented by "Cutting Duct." As a new business, we started the electromagnetic noise countermeasure (EMC) product business in 1997 to address electromagnetic noise issues arising from digital devices. In the LED business, we successfully developed a blue light-emitting diode in April 2002 and a white light-emitting diode in December of the same year. Based on these technologies, we are actively expanding our business in the field of LED lighting fixtures, ranging from roads and tunnels to industrial lighting. On March 9, 2018, Hoshia Electric Co., Ltd. was listed on the First Section of the Tokyo Stock Exchange. In April 2022, we transitioned to the Tokyo Stock Exchange Standard Market. Moving forward, we will continue to leverage our unique creativity and technological capabilities cultivated over the years to develop even more innovative products and strive for business expansion. Back to the roots of manufacturing "From the Kyoto to the world"