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ISDN, T-1, DDS Surge Prot Din Rail Mount Fused

In-line surge protection in a compact DIN-rail mount format.


3 In Stock
Same Day Shipping (before 5PM ET)
Extended Double Diamond™ Warranty Available (3 Additional Year)

*Required field

Product Features

  • Protect data lines with state-of-the-art avalanche diode and thyristor technology.
  • Maximize uptime by protecting data lines at the source.


  • Low shunt capacitance reduces signal loss.
  • Fit up to 16 compact in-line surge protectors in only 1U of rack space with our Rackmount DIN-Rail Shelf.
  • Mount on any standard DIN rail or on our Rackmount DIN-Rail Shelf (SPDINRAK).

  • Tech Specs

    cUL 0
    UL 0
    Connectors SPD450A: (2) BNC F; All others: (2) RJ-45
    Peak Pulse Current SPD512A: 100 Amps; SPD515A: 60 Amps; SPD050A, SPD450A: 50 Amps; SPD010A: 45 Amps; SPD075A: Pins 1, 2, 3, 6: 132 Amps, Pins 4, 5, 7, 8: 50 Amps; SPD365A: 75 Amps
    Response Time Less than 5 nanoseconds
    Shunt Capacitance SPD512A: <8pF; SPD515A: <40pF; SPD050A: <75pF; SPD010A: <15pF; SPD075A: <25pF (Ethernet lines only); SPD450A: <25pF; SPD365A: <95pF
    Standard Clamp Voltage SPD512A: 7.5 Volts; SPD515A: 18 Volts; SPD050A, SPD010A, SPD450A: 60 Volts; SPD075A: Pins 1, 2, 3, 5: 7.5 Volts, Pins 4, 5, 7, 8: 60 Volts; SPD365A: 240 Volts
    This product works with:

    * Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 877-877-2269.



    Double Diamond Warranty

    Extended 1 Year Warranty Available

    Protect your purchase with an additional 1 Year Double Diamond™ warranty!
    Cost: $7.10

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $14.21


    Double Diamond™ Warranty (Standard)

    Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

    The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

    The ISDN, T-1, DDS Surge Prot Din Rail Mount Fused comes with a standard 10 Year Double Diamond™ Warranty (Standard) already included.

    During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

    Plus, get an Extended Double Diamond Warranty.

    You can also extend your warranty or protect a previously purchased Black Box® brand product** for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

    Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

    * Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

    What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.