RocketPort ® 8-Port DB25M Surge Interface

This RocketPort 8-Port DB25M interface has eight DB25 male connections, communication speeds up to 460Kbps, and 25KV surge protection

Part Number: 30085-4

  • DB25 male connectors
  • RS-232/422/485 software-selectable ports
  • Communications speeds up to 460Kbps
  • 25KV surge protection
  • Rugged steel enclosure
  • Works with RocketPort INFINITY or RocketPort EXPRESS cards

The next-generation RocketPort 8-Port Surge Interface has eight DB25M connections that can be configured for RS-232/422/485 serial communications at speeds up to 460Kbps. The interface is connected to the required RocketPort INFINITY or EXPRESS controller card through a host interface cable.

View Engineering Drawing

  • RocketPort 8-Port DB25M Surge Interface Device
  • Loopback Plug
  • Bumper
  • Brackets (4)
  • Dimensions 5.3" x 0.9" x 5.8"
    134.6 x 22.9 x 147.3 mm
  • Product Weight 1.3 lbs
    0.59 kg
Electrical Specifications
  • ESD Surge Protection 25KV (min)
Environmental Specifications
  • Air temperature
    • System On 0 to 60° C
    • System Off -20 to 85° C
  • Operating Humidity (non-condensing) 5% to 95%
  • Altitude 0 to 10,000 Feet
    3,048 m
  • MTBF (Mean Time Between Failures) 59.3 Years

Serial Communications

  • Connector Type (8) DB25M
  • Supported Standards RS-232
    RS-485 Half-Duplex (2-wire)
    RS-485 Full-Duplex (4-wire)
  • Baud Rate 300 bps to 460.8 kbps
  • Device Driver Data Control
    • Modem Control Signals RTS, CTS, DSR, DTR, CD, RI


  • Manufacturer's Warranty 5 Years
Export Information
  • Packaged Shipping Weight 1.8lbs
    0.82 kg
  • Package Dimensions 9.25" x 2.5" x 7.25"
    235 x 63.5 x 184.2 mm
  • UPC Code 7-56727-30085-4
  • Country of Origin USA
  • ECCN EAR99
  • Schedule B Number 8471.80.1000
Regulatory Approvals
  • Emissions Canadian EMC Requirements
    European Standard EN55022
  • Immunity European Standard EN55024
    IEC 1000-4-2/EN61000-4-2: ESD
    IEC 1000-4-3/EN61000-4-3: RF
    IEC 1000-4-4/EN61000-4-4: FAST TRANSIENT
    IEC 1000-4-5/EN61000-4-5: SURGE
    IEC 1000-4-6/EN61000-4-6: CONDUCTED DISTURBANCE
    IEC 1000-4-8/EN61000-4-8: MAGNETIC FIELD
    IEC 1000-4-11/EN61000-4-11: DIPS AND VOLTAGE VARIATIONS
  • Safety IEC 60950/EN60950
    CSA C22.2 No. 60950/UL60950 Third Edition
  • Other Regulatory Approvals

Find a Distributor

» Industrial Distributors
» North American Distributors
» International Distributors

Pre-Sales Questions

Comtrol's Pre-sales Team
For sales questions or to locate a reseller near you.

+1-800-926-6876 (1-800-Go Rocket)
Fax: +1-763-957-6001

Comtrol's Industrial Automation Sales
For sales questions or to locate an industrial distributor near you.

+1-800-926-6876 (1-800-Go Rocket)
Fax: +1-763-957-6001

Product Support and Service Information

Part Number: 30085-4

Sales Support

Call +1.763.957.6000, or e-mail

Technical Support

For technical assistance, our U.S.-based technical support team is only a phone call away.

Call +1.763.957.6000, or visit our forum .


Comtrol offers a 30-Day satisfaction guarantee and a 5-year limited warranty on all RocketPort Interfaces (unity chip) family products!View Warranty

Extended Warranty Available

Software & Drivers
» Comtrol FTP Site