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Allen-Bradley 1786-BNCJI isolated TNC jack-to-jack bulkhead connector for ControlNet networks

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Allen-Bradley 1786-BNCJI

by Allen-Bradley

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OverviewThe Allen-Bradley 1786-BNCJI provides a high-performance, isolated jack-to-jack bulkhead connector, specifically designed for crucial ControlNet™ coaxial networks. This robust TNC-style connector offers a secure, panel-mounted interface, enabling seamless and electrically isolated connections between two ControlNet cables. Developed for demanding industrial settings, the 1786-BNCJI ensures optimal signal integrity, enhanced shielding, and reliable cable management, making it an essential component for maintaining the efficiency and safety of your automation systems.Integrating the 1786-BNCJI into control panels or OEM enclosures offers superior protection against electrical noise and ground loops, common challenges in industrial environments. Its 50 Ohm impedance guarantees precise signal transmission, while the bulkhead design allows for neat cable routing, reducing clutter and improving accessibility for maintenance. Rely on this Allen-Bradley connector for consistent performance and durability.Key Features Isolated TNC Jack-to-Jack Design: Specifically engineered for ControlNet coaxial networks, ensuring signal integrity and preventing ground loops. Robust Bulkhead Mount: Offers a secure, panel-mounted solution for industrial environments, ensuring stability and organized cable routing. 50 Ohm Impedance: Precisely matched impedance for optimal signal transfer and to avoid reflections within ControlNet systems. Electrical Isolation: Provides critical safeguarding against electrical interference and potential damage from voltage differences. Industrial-Grade Durability: Constructed to endure harsh industrial conditions, ensuring long-term reliability and performance. Seamless Pass-Through Connections: Facilitates straightforward and consistent connections for ControlNet trunk and drop cables. Allen-Bradley Quality: Produced to the highest standards, ensuring compatibility and effortless integration within existing Allen-Bradley infrastructures. Technical Specifications Brand: Allen-Bradley Series: Bulletin 1786 Part Number: 1786-BNCJI Type: TNC jack-to-jack isolated bulkhead connector Connection Interface: TNC coaxial, 50 Ohm Function: ControlNet panel-mount pass-through Mounting Style: Bulkhead (panel mount) Isolation: Electrically isolated Application: ControlNet trunk and drop cable terminations Condition: New Applications ControlNet Panel Pass-Through Connections: Essential for establishing dependable connections between network segments in control panels. Industrial Automation Cabinets: Ideal for integrating ControlNet devices within automation enclosures, preserving signal integrity and organization. OEM Enclosures Requiring Isolated Coax Connections: Suited for original equipment manufacturers needing robust and electrically isolated coaxial interfaces. System Maintenance and Testing Ports: Delivers convenient and secure access points for diagnostics and troubleshooting of ControlNet networks. Shielded Cable Routing in High-Noise Environments: Guarantees secure and isolated routing of coaxial cables in areas prone to electromagnetic interference. Distributed Control Systems (DCS): Facilitates reliable connectivity within complex DCS architectures, ensuring system stability. Why ChooseDesigned and optimized for ControlNet, this connector ensures flawless integration and superior network performance within your Allen-Bradley ecosystem. The electrical isolation feature is critical for preventing ground loops and noise, significantly improving the stability and longevity of your ControlNet network. Its bulkhead design allows for clean, professional panel mounting, simplifying cable management and making future maintenance tasks more efficient. As an Allen-Bradley product, the 1786-BNCJI is built to withstand demanding industrial conditions.Order NowElevate the reliability of your ControlNet network with the Allen-Bradley 1786-BNCJI. Contact us today to place your order and ensure optimal performance in your industrial automation systems.FAQWhat is the primary function of the 1786-BNCJI?The 1786-BNCJI serves as an isolated jack-to-jack bulkhead connector for ControlNet coaxial networks, providing a secure, panel-mounted interface for electrically isolated connections between two ControlNet cables.Why is electrical isolation important in industrial environments?Electrical isolation is crucial for preventing electrical noise and ground loops, which can disrupt signal integrity and potentially damage equipment in industrial settings.What type of impedance does this connector have?The 1786-BNCJI features a 50 Ohm impedance, which is precisely matched for optimal signal transmission within ControlNet systems and helps to prevent signal reflections.Can this connector be used with both ControlNet trunk and drop cables?Yes, the 1786-BNCJI is designed for seamless pass-through connections, making it suitable for both ControlNet trunk and drop cable terminations.What are the benefits of a bulkhead mount design?A bulkhead mount design provides a secure, panel-mounted solution that facilitates organized cable management, reduces clutter, and improves accessibility for maintenance in industrial environments.

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PRODUCT DETAILS

Allen-Bradley 1786-BNCJI

Overview

This is a genuine Allen-Bradley component. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Allen-Bradley catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Allen-Bradley automation ecosystem

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Allen-Bradley equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Allen-Bradley platform with documented conversion notes

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Brand: Allen-Bradley
  • Series: Bulletin 1786
  • Part Number: 1786-BNCJI
  • Type: TNC jack-to-jack isolated bulkhead connector
  • Connection Interface: TNC coaxial, 50 Ohm
  • Function: ControlNet panel-mount pass-through
  • Mounting Style: Bulkhead (panel mount)
  • Isolation: Electrically isolated
  • Application: ControlNet trunk and drop cable terminations
  • Condition: New

Applications

  • ControlNet Panel Pass-Through Connections: Essential for establishing dependable connections between network segments in control panels.
  • Industrial Automation Cabinets: Ideal for integrating ControlNet devices within automation enclosures, preserving signal integrity and organization.
  • OEM Enclosures Requiring Isolated Coax Connections: Suited for original equipment manufacturers needing robust and electrically isolated coaxial interfaces.
  • System Maintenance and Testing Ports: Delivers convenient and secure access points for diagnostics and troubleshooting of ControlNet networks.
  • Shielded Cable Routing in High-Noise Environments: Guarantees secure and isolated routing of coaxial cables in areas prone to electromagnetic interference.
  • Distributed Control Systems (DCS): Facilitates reliable connectivity within complex DCS architectures, ensuring system stability.

Why Choose the 1786-BNCJI?

Designed and optimized for ControlNet, this connector ensures flawless integration and superior network performance within your Allen-Bradley ecosystem. The electrical isolation feature is critical for preventing ground loops and noise, significantly improving the stability and longevity of your ControlNet network. Its bulkhead design allows for clean, professional panel mounting, simplifying cable management and making future maintenance tasks more efficient. As an Allen-Bradley product, the 1786-BNCJI is built to withstand demanding industrial conditions.

Availability & Shipping

  • In stock: 1786-BNCJI ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 1786-BNCJI ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

The 1786-BNCJI serves as an isolated jack-to-jack bulkhead connector for ControlNet coaxial networks, providing a secure, panel-mounted interface for electrically isolated connections between two ControlNet cables.

Machine down? We ship parts the same day.

New, surplus, and refurbished Allen-Bradley inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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