LineSelect® Model 8277 DB25 2-Position A/B Rotary Switch, Manual Operation, Desktop
Overview
The LineSelect® Model 8277 A/B Switch allows the user to access two DB25 devices connected to the A and B ports from one DB25 device connected to the Common port. Switching between devices A and B is quick and easy via the front panel rotary selector. The Model 8277 is packaged in a slim desktop style enclosure. Mounting holes provided on the bottom of the unit for securing the unit in a fixed location.
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Chassis mount via threaded inserts.
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Threaded #6-32 mounting inserts provide fast, stable installation without additional brackets or hardware.
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Designed for secure chassis mounting to equipment panels, racks, consoles, and enclosures for permanent installation.
FEATURES OF THE MODEL 8277 A/B ROTARY SWITCH:
- Allows access to two networks from one computer or workstation.
- High reliability sealed switch with self-wiping precious metal contacts.
- Eliminates the need to plug and unplug cables.
- No external power required.
- Transparent to data speed and format.
- Manual operation via front panel rotary switch.
- Switches pins 2, 3, and 7 of the DB25 interface via break-before-make rotary switch.
- Attractive anodized black box packaging provides EMI/RFI shielding.
- Chassis has no feet.
- Chassis employs fixed threaded fasteners pressed/bonded to metal enclosure covers and panels to accept the use of machine screws and hardware.
- Threaded inserts on bottom of chassis are threaded for #6-32 hardware.
- Rear panel chassis stud accepts spade lug for secure grounding.
- Custom length DB25 cables available for your switch installation.
TECHNICAL SPECIFICATIONS:
- PORT CONNECTORS: (3) DB25 female connectors labeled A, B, and Common.
- FRONT PANEL CONTROLS: (1) Rotary Switch allows local switching.
- POWER: Manually operated. No power required.
- GROUND STUD: On rear panel.
- DIMENSIONS: 5.44"W x 2.02"H x 7.27"D. (13.9 x 5.2 x 18.5 cm)
- WEIGHT: Approximately 1.1 lb. (0.5 kg.)
LineSelect® Model 8277 DB25 A/B Switch Application:
LineSelect® Model 8277 illustrates a DB25 COMMON port with access to two Devices connected to the DB25 A and B ports. There is a Chassis Ground Lug on the rear panel.

Ordering Information
- Catalog Number: 308277
- Model Number: 8277
- Base Price: See website or contact us for current pricing and availability.
Documentation & Support
- Specification Sheet (PDF) Download Available.
- Product Manual available upon request.
- For custom fiber optic network switch requirements contact our sales support team 401-943-1164 or email eslab@electrostandards.com
- We welcome international inquiries and ship worldwide.
Shipping and Returns 
- Shipped via UPS ground (unless otherwise requested).
- Freight Charges prepaid and added to invoice. We can estimate freight charges for you.
- Return policy: contact us within 30 days of shipment for an RMA number. Items returned without RMA not accepted. Please refer to our full return policy in our Terms and Conditions found on our website.
Electro Standards can supply all your Network Cable requirements. Click here to reach our CABLES, COPPER NETWORK Webpage.
For custom network switches call our friendly customer support staff at 401-943-1164, email eslab@electrostandards.com, or complete our online form: /Products-Custom/Copper-Switch/
All data switches, 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 products are available for export.
Electro Standards welcomes International inquiries: commutateur d'ordinateur, equipo interruptor, interruttore del calcolatore, interruptor do computador, dator switch.