七星科学研究所 List of Products and Services

Explosion-proof rating Ex db IIC Gb, capable of handling a wide range of explosive gases including hydrogen. The shell material is available in two types: stainless steel and brass, and there are three sizes to choose from, allowing for a wide range of needs. Recommended for engineering companies, maintenance personnel in chemical plants, and users of hydrogen-compatible products. 【Features】 ■ Simple component structure for easy installation and removal ■ Compatible with the installation of protective conduits for electrical wires (Conduit thread available at the cable entry point) ■ Waterproof performance: IP67 when connected ■ Compliant with international guidelines (Ex2020, 2018) and international standard IEC 60079 ■ Certified by NCS Co., Ltd. *For more details, please refer to the documentation. Feel free to contact us with any inquiries.

• cable

We would like to introduce our "NEW Series" that we handle. These are waterproof connectors compliant with European safety standards based on NRW, and they also meet UL and CSA standards. They have waterproof functionality with an IP-67 rating when connected. The shell is made of high-strength plastic that excels in weather resistance. It is lightweight yet durable, and the use of an L-shaped design allows for installation in tight spaces. 【Features】 ■ Waterproof IP-67 ■ RoHS compliant ■ One-touch lock ■ Compliant with international standards *For more details, please refer to the PDF document or feel free to contact us.

• Waterproof Connector

We would like to introduce the 'NRW Series' that we handle. During connection, it has waterproof functionality with an IP-67 rating and is lightweight due to its resin construction. The one-touch locking mechanism makes it suitable for portable devices. The shell is made of high-strength plastic with excellent weather resistance, and the use of an L-bracket allows for installation in tight spaces. 【Features】 ■ Waterproof IP-67 ■ Compliant with RoHS Directive ■ One-touch locking mechanism ■ Available in compliance with international standards ■ Crimp type available *For more details, please refer to the PDF document or feel free to contact us.

• Waterproof Connector

We would like to introduce the 'NAW Series' that we handle. This is a metal type waterproof connector with a one-touch locking mechanism. It features an IP-67 waterproof rating and is robust due to the use of a metal shell. The shell is made of die-cast zinc alloy or aluminum alloy, and the adoption of a 5-key guide system allows for smooth coupling. It is suitable for use in civil engineering, construction machinery, and various types of machinery. 【Features】 ■ Waterproof IP-67 ■ Compliant with RoHS directive ■ One-touch lock ■ Products compliant with international standards available ■ Crimp type available *For more details, please refer to the PDF document or feel free to contact us.

• Waterproof Connector

We would like to introduce the 'NJW Series' that we handle. This is a waterproof connector based on the NJC series, featuring waterproof performance with an IP-67 rating when connected. It boasts a wide variety of options, just like the NJC series. The shell is made of die-cast zinc alloy or aluminum alloy, and the adoption of a 5-key guide system ensures smooth coupling. It has a proven track record in outdoor installations such as surveillance cameras, construction machinery, and outdoor measuring instruments. 【Features】 ■ Waterproof IP-67 ■ Compliant with RoHS Directive ■ Products compliant with Electrical Safety Law available ■ Products compliant with international standards available ■ Crimp type available *For more details, please refer to the PDF materials or feel free to contact us.

• Waterproof Connector

We would like to introduce our 'NET Series' products. These power connectors comply with European safety standards and have also obtained UL and CSA certifications. They have a proven track record in various FA equipment, including semiconductor manufacturing equipment. The protective circuit structure features a metal shell and a sequence (priority contact) structure with a conductive earth contact, allowing for installation in tight spaces using an L-bracket. 【Features】 ■ Non-waterproof ■ Compliant with RoHS Directive ■ Compliant with international standards ■ Screw lock mechanism ■ Wiring method via soldering *For more details, please refer to the PDF materials or feel free to contact us.

• Circular Connectors

We would like to introduce the "NR Series" that we handle. This connector has evolved the NJC series into a unique one-touch locking mechanism, demonstrating its effectiveness in portable devices and in tight spaces. The shell is made of die-cast zinc alloy, and the adoption of a five-key guide ensures smooth coupling. The use of an L-shaped design also allows for installation in narrow areas. 【Features】 ■ Non-waterproof ■ Compliant with RoHS Directive ■ One-touch lock ■ Products compliant with international standards available ■ Crimp type available *For more details, please refer to the PDF document or feel free to contact us.

• Circular Connectors

We would like to introduce the "NJC Series" that we handle. These connectors are designed in accordance with JIS C 5432 and come with a wide variety of derived variations, offering a rich lineup. There are also many variations that meet international standards, with numerous achievements in semiconductor manufacturing equipment and various measuring instruments. The shell is made of die-cast zinc alloy or aluminum alloy, and the adoption of a 5-key guide system ensures smooth coupling. 【Features】 ■ Non-waterproof ■ Compliant with RoHS Directive ■ Products that conform to Electrical Appliance and Material Safety Law available ■ Products that comply with international standards available ■ Crimp type available *For more details, please refer to the PDF materials or feel free to contact us.

• Circular Connectors

The "UNJW-24A-R" adopts the shell of the NJW-24 series, which has a proven track record in waterproof connectors. It is compatible with USB 1.1/1.0 standard devices and can be used. When the USB cable is not connected, using the cap provides waterproof performance equivalent to IP-67. Additionally, it supports USB 2.0 "Hi-SPEED" mode (transfer speed of 480 Mbps) and meets electrical characteristics. 【Features】 ■ Provides waterproof performance equivalent to IP-67 when the waterproof cap is used ■ Adopts the shell of the NJW-24 series, which has a proven track record in waterproof connectors ■ Complies with the revised RoHS directive that started in July 2019 ■ Compatible with USB 1.1/1.0 standard devices ■ Supports USB 2.0 "Hi-SPEED" mode *For more details, please refer to the PDF document or feel free to contact us.

• Waterproof Connector
• connector

The "MW series" is a super compact (maximum plug outer diameter φ10) waterproof connector. The receptacle adopts a bulkhead type, allowing for space-saving solutions. It is possible to connect the cable shield to the connector shell. 【Specifications】 ○ RoHS: Compliant with RoHS Directive ○ Waterproof: Waterproof connector "Waterproof function during coupling equivalent to IP-67" ○ Locking method: Screw lock type ○ Wiring method: Soldering ○ Operating temperature range: -25℃ to +85℃ For more details, please contact us or download the catalog.

• Other Connectors

The "PLW series" is a lightweight type of small resin waterproof connector that uses a resin material with excellent weather resistance. It has outstanding dielectric strength, and even when the specified voltage is applied between the closest conductors for one minute, there are no abnormalities such as short circuits. 【Features】 ○ PSE certified product ○ Lightweight type using resin material ○ Made with resin material that has excellent weather resistance For more details, please contact us or download the catalog.

• Other Connectors

The "ENJW・ENRW series" is an outdoor waterproof Ethernet connector that excels in waterproof performance and weather resistance, making it ideal for outdoor applications. With the built-in JJ adapter, modular plug connections can be made at the back of the receptacle and inside the adapter. There are two types available: screw-lock type and one-touch lock type. It adopts the shells of NJW and NRW, which have a proven track record in various outdoor applications. 【Characteristics】 ■ Repeated operation → After 500 insertions and removals, there are no cracks in any parts, no loosening of components, and the contact resistance is below 20 mΩ. ■ Humidity resistance → After conducting a humidity test, there are no functional issues, and the insulation resistance is above 10 MΩ. ■ Temperature cycle → After conducting a temperature cycle test, there are no functional issues, and the insulation resistance is above 500 MΩ. ■ Waterproof performance → Under normal usage conditions, after being left for 24 hours under a water pressure of 40 kPa, there are no signs of water ingress. For more details, please contact us or download the catalog.

• Other Connectors