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  1. Home
  2. Electrical equipment construction business
  3. 星和電機
  4. Release of joint box with internal wiring (SBJA series).
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  • Jan 25, 2019
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Jan 25, 2019

Release of joint box with internal wiring (SBJA series).

星和電機 星和電機
Hoshi and Electric Co., Ltd. has been supplying lighting fixtures for numerous roads and tunnels since 1957, when it provided lighting 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 since its release. We are now launching a new addition to our lineup, the "Junction Box with Internal Wiring for Poles" (SBJA series), which makes 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 also straightforward. The junction box has a sealed compartment for the breaker and terminal block in some specifications, protecting electrical wiring from moisture and water droplets that accumulate inside the pole. Additionally, the top cover can be opened to measure voltage and insulation resistance.
SBJA Series
SBJA Series
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Seiwa Electric Co., Ltd.
Homepage of Seiwa Electric Co., Ltd.
Joint BOX with Internal Wiring - SBJA series
Overview and Features A waterproof and dustproof plastic box that houses a breaker and terminal block, shutting out moisture and water droplets inside the pole that can cause insulation failure. 1. Breaker operation can be performed without opening the top cover, making installation and inspection work easy. 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 ingress into the device. 3. Because it uses a box with excellent airtightness, there is no insulation degradation due to wiring connections.

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SBJA製品写真.jpg

"Joint box with internal wiring for poles" (SBJA series) released.

Joint box with internal wiring for poles, featuring excellent waterproof and dustproof performance, allowing for safe and easy wiring work.

The "Joint Box with Internal Wiring" (SBJA Series) has a protection rating equivalent to IP68 against waterproofing and dustproofing, making it an ideal structure for poles with high humidity. It comes with wiring, ensuring safe and easy connections, and facilitates inspections. The breaker and terminal block are sealed within, protecting the 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. This product incorporates the resin bonding technology "AKI-Lock" from Polyplastics Co., Ltd. It utilizes a new technology that allows for bonding different types of resins and resin to rubber, which was difficult with conventional methods, resulting in improved waterproof performance compared to previous products.

  • Cord Pendant
  • Waterproof, moisture-proof, explosion-proof lighting fixtures
  • Lighting Planning

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"Joint Box with Internal Wiring for Poles" Product Catalog

"Joint Box with Internal Wiring for Poles" Product Catalog

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Electrical equipment construction business
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PERI products are used at construction sites around the world. (Rotterdam, Netherlands: Rotterdam Capacity Growth (RDCG))

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PERI products are used at construction sites around the world. This time, we would like to introduce the construction site 'Rotterdam Capacity Growth (RDCG)' in Rotterdam, Netherlands. PERI is supporting the expansion of one of Europe's largest biofuel refineries by providing innovative scaffolding solutions. This helps meet Europe's high safety standards, achieve efficient processes, and significantly contribute to the decarbonization of air transport. As part of the Rotterdam Capacity Growth (RDCG) project, one of Europe's largest biofuel refineries is under construction. This will increase the annual production capacity of biofuels from 1.4 million tons to 2.7 million tons. PERI products: 1. PERI UP (modular scaffolding) PERI Japan Co., Ltd.

Feb 23, 2026

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Strengthening measures against extreme heat through "visualization" and "heat shielding construction"! The comprehensive catalog (2026) for achieving safety and energy conservation in factories and warehouses has been completed.

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In preparation for this summer's extreme heat, we have completed a "Heatwave Countermeasure Catalog" that will help improve the working environment in the manufacturing and logistics industries. The catalog includes a wide range of products for facility improvements, such as fireproof certified heat-shielding sheets that cut radiant heat by 97%, heat-shielding curtains, roof and window countermeasure products, and fans suitable for large spaces, as well as black globe thermometers that can measure WBGT, wearable alert bands, mobile cooling shelters, and fan-equipped work clothing. We have consolidated measures for "building countermeasures," "work space countermeasures," and "personal countermeasures" into one volume. It can also be used as reference material for discussions in safety and health committees. Please take a look at the specific measures that simultaneously achieve heat countermeasures and energy conservation/CO₂ reduction.

Feb 20, 2026

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Notice of the Opening of the Kyushu Sales Office

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We are pleased to announce the establishment of the "Kyushu Sales Office" aimed at strengthening our business foundation in the Kyushu area. With the opening of the new sales office, we will be able to respond more quickly and flexibly to our customers in the Kyushu region, while enhancing our support system closely tied to the local community. We will also deepen our collaboration with local partner companies, aiming for further growth of our business while strengthening our trust with the community. We kindly ask for your continued support for the Kyushu Sales Office and our company. Thank you very much. 【Overview of Kyushu Sales Office】 Establishment Date: January 1, 2026 Company Name: BM Nagano Co., Ltd. Kyushu Sales Office Location: 1-15-20 Hakataekimae, Hakata Ward, Fukuoka City, Fukuoka Prefecture, 812-0011, NMF Hakataekimae Building 2nd Floor

Feb 19, 2026

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We have started experiments on drug-resistant bacteria!

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We have recently started a demonstration experiment aimed at addressing antibiotic-resistant bacteria in dairy farming. Utilizing compost environments, we will examine the impact of using our technology-based aqueous solutions on microbial dynamics. This experiment is being conducted with field cooperation, aiming to establish a new approach that contributes to the realization of a sustainable livestock environment and the reduction of antibiotic usage. In this trial, we will set up a spray group (Group H) and a non-spray group (Group C), and will conduct a time-series comparison before spraying, immediately after spraying, and at 1, 3, 7, 14, 28, and 42 days, as well as at the maturation stage. We will perform sampling from the upper, middle, and lower layers of the compost at a depth of 10 cm, while simultaneously collecting temperature logs (external temperature and two internal compost temperatures) to analyze microbial changes and fermentation status from multiple angles. Based on scientific data, we will pursue a balance between safety and effectiveness, and work towards contributing to the livestock industry.

Feb 19, 2026

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[Update] The safety climber construction method brochure has been updated.

[Update] The safety climber method brochure has been updated.

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[SCM Brochure Update] We have updated the brochure for the remote-controlled unmanned excavation method, Safety Climber Method, which is promoted by K-F as a supporting member. The name of the latest brochure is: scm_panf_260219.pdf We hope you find it useful. *For technical questions regarding the Safety Climber Method or inquiries about pricing, please contact the Safety Climber Association Secretariat.

Feb 19, 2026

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