401-943-1164 / US & Canada Toll Free: 877-943-1164

Catalog # 309250 - Model 9250 2-Channel DB25 AB / DB25 ABC Switch

    2-Channel DB25 AB / DB25 ABC Switch2-Channel DB25 AB / DB25 ABC Switch2-Channel DB25 AB / DB25 ABC Switch2-Channel DB25 AB / DB25 ABC Switch
Click image to enlarge
    • 2-Channel DB25 AB / DB25 ABC Switch
    • 2-Channel DB25 AB / DB25 ABC Switch
    • 2-Channel DB25 AB / DB25 ABC Switch
    • 2-Channel DB25 AB / DB25 ABC Switch
Base Price:
Catalog No: 309250
Model No: 9250
Product Type:Switches: Copper
Positions:2, 3
Cable Type/Port Connector:DB25 Switch Ports
Channels per Switch Chassis:2
Manual Control/No Power Required:LineSelect® Manual Operation
Channel Control:Independent Channel Control
Pins Switched:25
Local Control:Rotary Knob

Model 9250:

  • Channel 1: DB25 A/B/C SWITCH
  • Channel 2: DB25 A/B SWITCH

Shipping Terms

Shipments are made via UPS Ground, unless otherwise specified. Freight charges are prepaid and added to your invoice. We can estimate the freight costs for you.

We can ship freight collect on your account, just provide your UPS Account Number.

We can also ship via the carrier of your choice. Provide the details and your account number.

Products shall be shipped F.O.B. Electro Standards' facility. Title to and risk of loss or damage to the products shall pass to you upon Electro Standards delivery of the products to a carrier for shipment. Title to software will remain with the applicable licensor. Electro Standards' prices do not include shipping and handling charges. Electro Standards reserves the right to use its own discretion in the manner and routing of shipments. Electro Standards shall be permitted to deliver products in separate lots.

Shipping Return Policy

  • To return an item, contact Electro Standards at 401-943-1164 to obtain a Return Material Authorization (RMA) number. RMA numbers are valid for 30 days after the date of the shipment and cannot be extended or re-issued. We are unable to accept returns without an RMA number.
  • All returns except those of defective product are subject to a 15% restocking fee, and additional charges for handling or freight are refunded only in cases of defective products.
  • Return freight must be shipped prepaid. We recommend that you insure the package as you are responsible for risk of loss on all returned packages. We recommend that all cartons are properly packed as Electro Standards is not responsible for product damaged en route. We do not issue call tags for product returns.
  • Returned product must be clean, undamaged, and complete with all manuals, accessories, documents and packaging. The items must be in a resalable condition.
  • The product must have with it a copy of the original invoice or packing slip and the appropriate RMA paperwork.
  • If your item is not working properly, please contact Electro Standards at 401-943-1164 for help in trouble-shooting your application.
  • If the product is defective, Electro Standards will repair or replace that item (at our discretion) upon receipt and evaluation of the original product.
  • Electro Standards reserves the right to authorize product returns after 30 days from the invoice date in some cases. If the product is accepted after 30 days, credit will be issued toward future pruchases only and some additional restocking charges may be applied.
  • All credits from RMAs must be used within one calendar year of issue.

Ask a Question

Protected Document Request


Manual Network Switch, DB25, RS530
Model 9250 Dual-Channel Switch, RS530 DB25 A/B/C and DB25 A/B Switch, Manual, Rackmount

  • Applicable to Switching ANY DB25 interface devices.


  • CHANNEL-1 PORT CONNECTORS: (4) DB25 female connectors labeled A, B, C, and Common.
  • CHANNEL-2 PORT CONNECTORS: (3) DB25 female connectors labeled A, B, and Common.
  • FRONT PANEL CONTROLS: (2) Manual rotary switches allow local switching.
  • DIMENSIONS: Rackmount 19.0" W x 3.5" H x 8.0" D. (48.3 x 8.9 x 20.3 cm)
  • WEIGHT:  Approximately 6.0 lbs. (2.72 kg)

LineSelect® Model 9250 Switch system is comprised of two independent sharing switches efficiently packaged in a 19-inch wide 2U high (3.5") rackmount unit.  The network switch functions are described and illustrated below.


The drawing illustrates two independent switches:

Channel 1: DB25 A/B/C SWITCH

Channel 1 has a computer connected to the DB25 COMMON port with access to any one of three other computers labeled, A-1, B-1, and C-1.

Channel 2: DB25 A/B SWITCH.

Channel 2 has a computer connected to the DB25 COMMON port with access to two other computers labeled A-2, and B-2.

LineSelect Model 9250 Dual Channel Switch, RS530 DB15 A/B.C & DB25 A/B Switch Application


  • Independently switch each of the two channels manually via two knobs located on the front panel, one knob per channel.
    • Channel 1:  DB25 A/B/C with (4) DB25 female connectors for ports A, B, C, and Common.
    • Channel 2:  DB25 A/B Switch with (3) DB25 female connectors for ports A, B, and Common.
  • All 25 pins of the RS530 interface are switched via break-before-make rotary switch.
  • High reliability, precious metal, sealed switches.
  • Transparent to data speed and format.
  • Eliminates the need to plug and unplug cables.
  • All ports located on rear panel.
  • Manual operation.  No power required.
  • Attractive all metal, black box packaging provides EMI/RFI shielding.
  • Custom length DB25 cables are available for your switch installation.
  • Lifetime warranty against manufacturing defects.
  • For a similar Dual-Channel Switch with DB25 A/B/C/D and DB25 A/B positions, See Model 9251, Cat  No 309251

Ask about our popular Model 900 EIA/TIA RS-530 Interface Analyzer

  • Red and Green light emitting diodes indicate status of key signals at the EIA/TIA data interface.
  • Easy to use, for fault isolation.
  • Electro Standards can supply all your Network Cable requirements.

Model 900 EIA/TIA RS520 Interface Analyzer

Electro Standards can supply all of your Network Cable requirements. Click here to reach our Copper Cable Assemblies webpage

For custom network switches call our friendly customer support staff at 401-943-1164, email eslab@electrostandards.com, or complete our online Custom Product Request form.

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 de réseau, conmutador de red, switch di rete, przelacznik sieciowy, switch de rede, nätverksswitch,

Available Combo Deals