Overview

LineSelect® Model 9074 RJ45 A/B/OFFLINE Rotary Switch, DIN Rail Mounted, Cat5e Compliant, with Manual Keylock Control

The Model 9074 RJ45 A/B/OFFLINE switch allows the user to access two RJ45 devices connected to its A and B ports with one RJ45 device connected to its COMMON port, or to isolate all ports by switching to OFFLINE position.  This secure disconnect switch is a manually operated keylock switch, requiring no power.  Port selection is quick and easy via a front panel keylock switch.  The Model 9080 RJ45 switch is easily integrated as a system component by utilizing its rear panel DIN rail mounting bracket. Key can be removed ONLY in the OFFLINE position.

• Provides Switching Security and Port-to-Port Isolation

• Keylock Control Prevents Accidental or Unauthorized Switching

• Convenient DIN Rail Mounting for Easy System Integration

• Cat5e Compliance

FEATURES:

• The Model 9074 Cat5e Switch allows (1) COMMON RJ45 port to be shared among either of (2) RJ45 ports A and B, or isolate all ports by switching to secure OFFLINE position.
• Key can be removed ONLY in the OFFLINE position.
• Manual operation via front panel mounted keylock switch.
• Switches all 8 leads of the RJ45 interface via break-before-make rotary switch.
• Certified for category 5e compliance.
• Manually operated keylock switch. No power required.
• DIN-rail bracket on rear panel.
• Grounding screw is mounted on the front panel.
• Custom length Cat5e RJ45 cables available.
• For a similar switch with different key operation, see Model 9080 Cat. No. 309080.

SPECIFICATIONS:

• PORT CONNECTORS: (3) RJ45 female connectors labeled A, B, and COMMON.
• FRONT PANEL CONTROL: (1) Keylock switch allows local switching.
• POWER: No power required.  Manually operated.
• ENCLOSURE: Shielded Aluminum Enclosure.
• DIMENSIONS: DIN Rail Mount Package: 1.75" W x 4.25" H x 6.0" D. (4.4 x 10.8 x 15.2 cm)
• WEIGHT: Approximately 1.1 lbs. (0.5 kg)

DIN RAIL CAT5e RJ45 A/B/OFFINE APPLICATION: The diagram illustrates a COMMON device connected to the RJ45 COMMON port accessing the A, B or OFFLINE position via a keylock switch.

• OFFLINE position isolates all ports.
• Key can be removed ONLY in the OFFLINE position.
• Switches any RJ45 interface!
• Switch is easily integrated as a system component.
• Ideal for use in process control systems.
• DIN rail mounting bracket.

What Does the Model 9074 AB & Offline Switch with Keylock Control Do? 

• It’s a manual (no-power) RJ45 network switch that lets one “COMMON” network connection be switched to either of two other RJ45 connections (A or B) or totally isolated (OFFLINE).

• Operated by a keylock on the front panel (key can ONLY be removed in the OFFLINE position) and mounts on a DIN rail for industrial racks/cabinets.

• It switches all 8 RJ45 pins (Cat5e) so everything (Ethernet, serial over RJ45, or other Cat5e signals) follows the switch.

Typical Use Cases Industrial or Process Control

• Switch between two network paths or devices for a controller, PLC, sensor, or operator station, without unplugging cables.

• Can be used in SCADA or automation racks where redundant servers, input/output modules, or networks are present — and you need to manually select which is active.

Secure Isolation (OFFLINE Position)

• The OFFLINE position physically isolates all connections — helpful for security or maintenance so no signal passes (think troubleshooting or secure disconnect).

• The key can ONLY be removed in the OFFLINE position to lock out, preventing unauthorized switching.

Avoiding Cable Unplugging

• Reduces wear on connectors and mistakes from repeatedly plugging/unplugging CAT cables.

• Helps quickly swap networks or devices just by rotating the key to A or B.

Redundancy or Fallback Configuration

• If you have two redundant network sources (primary/secondary), you can switch them for upgrades, failures, or testing without re-cabling.

Secure Shared Access

• In labs or industrial settings where one common test device must connect to either of two networks without mixing data paths — and isolation is sometimes needed for safety.

Integration in Control Cabinets

• DIN-rail mount makes it easy to add into existing industrial racks alongside power supplies, PLCs, and terminal blocks.

General Networking / Admin

Even outside industrial use, similar “A/B/OFFLINE” RJ45 switches are used where secure physical switching between networks or devices is desirable — e.g.,:

• Changing which switch/router an endpoint uses without changing cables.

• Isolating a device from the network during troubleshooting.

• Switching between test and production networks for a piece of equipment.

Custom Network Switches are available. Contact us by phone, email, or complete the Online Custom Products Form. /Products-Custom/Copper-Switch/

Electro Standards can supply all of your Network Cable requirements. Click here to reach our CABLES, COPPER NETWORK Webpage. 

All data switch boxes, data communication products, and data acquisition products are subject to a one year warranty against manufacturing defects.  The limit of ESL liability is limited to the cost of the ESL product provided.

 *Prices online are subject to change and verification. 
All ESL Data Communication Products are available for export.