Bussmann TPA-B Eaton TPA Serie...
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Bussmann TPA-B Eaton TPA Series Telecommunication Fuse, 65Vdc

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Model: TPA-B-25

In Stock (leaves warehouse same day if ordered before 3pm ET)

$130.24
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Bussmann TPA-B-30 Eaton Series Telecommunication Fuse, 65Vdc, 30A, 20kAIC

The Bussmann TPA-B-30 is an Eaton Bussmann series TPA telecommunication fuse engineered for DC power protection in telecom equipment, central office, and network power distribution applications. Rated 65 Vdc at 30A with a 20 kAIC interrupting rating, this current-limiting fuse is designed to clear high-level fault currents quickly while limiting the energy that reaches downstream telecommunication equipment. A built-in indication pin works alongside an orange ring marking so technicians can confirm correct fuse position and status at a glance during installation, inspection, and routine maintenance. As part of the Eaton Bussmann series TPA lineup, the TPA-B-30 is built to the tight tolerances and consistent performance that telecommunication power systems demand.

Key Features

  • Amperage Rating: 30A rating sized for telecommunication DC power circuits and load requirements.
  • Voltage Rating: 65 Vdc rating matched to telecom power distribution and battery plant systems.
  • Interrupting Rating: 20 kAIC current-limiting performance restricts let-through energy during high fault conditions, helping protect downstream equipment and wiring.
  • Current-Limiting Design: Fast-acting, current-limiting construction reduces peak fault current and energy reaching sensitive telecommunication equipment.
  • Indication Pin: Integrated indication pin provides a quick visual reference point during inspection and maintenance.
  • Orange Position Ring: Orange ring marking helps installers confirm correct fuse position and orientation before energizing the circuit.
  • Eaton Bussmann TPA Series: Part of the Eaton Bussmann series TPA telecommunication fuse family, built for consistent, repeatable performance.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Telecommunication Equipment Protection
  • Central Office DC Power Distribution
  • Network and Data Equipment Circuits
  • Battery Backup and DC Power Systems
  • Telecom Cabinets and Power Distribution Enclosures

Why Bussmann?

Eaton Bussmann series fuses are engineered for dependable performance in critical power protection applications where downtime is not an option. The TPA-B-30 pairs a 20 kAIC current-limiting design with a 65 Vdc, 30A rating to deliver reliable protection for telecommunication power circuits, while the indication pin and orange position ring give installers and maintenance technicians a clear, at-a-glance way to verify correct fuse placement. For professionals specifying telecommunication power protection, the Eaton Bussmann series TPA fuse line offers the consistency and attention to installation detail that demanding telecom infrastructure requires.

Manufacturer Resources

Product Specs

Department:
Electrical
Product Subgroup:
Fuses
Product Group:
Circuit Protection
Product Type:
Fuse
Product Length:
0.58 in
Product Height:
1.5 in
Voltage Rating:
65V DC
Product Width:
0.58 in
Compliances:
CE Marked
Product Weight:
0.25 lb

Bussmann TPA-B-25 – Frequently Asked Questions

1) What amp ratings does the Bussmann TPA-B telecommunication fuse come in?
The Eaton Bussmann TPA-B series is offered in two amp ratings: 25A (TPA-B-25) and 30A (TPA-B-30). Both carry the same 65 Vdc rating, so the choice comes down to the load and conductor sizing on the DC circuit you are protecting.
2) Can I use a TPA-B fuse on a 120V AC circuit?
No. The TPA-B is a 65 Vdc telecommunication fuse, rated for DC power distribution such as central office plants, battery backup systems, and telecom cabinets. It is not an AC branch circuit fuse, and it should not be applied above its 65 Vdc rating. For AC protection you need a fuse carrying an AC voltage rating.
3) What is the interrupting rating of the Bussmann TPA-B-30?
20 kAIC. The TPA-B-30 is a current-limiting fuse, so on a high-level fault it clears fast and holds down the peak let-through current and energy reaching downstream telecom equipment and wiring. That matters on battery plants, where available fault current from a string can be substantial.
4) What is the indication pin and orange ring on the TPA-B fuse for?
The TPA-B carries a built-in indication pin plus an orange ring marking. The pin gives a technician a visual reference during inspection and routine maintenance, and the orange ring is a position marker so an installer can confirm the fuse is seated in the correct orientation before energizing. Useful on a crowded fuse panel where you are checking a row of positions quickly.
5) Is the TPA-B a fast-acting or time-delay fuse?
Fast-acting. The TPA series construction is fast-acting and current-limiting, aimed at protecting sensitive telecommunication electronics rather than riding through inrush. If your load has a significant startup surge, a fast-acting fuse of this type is the wrong choice.
6) How do I order the exact TPA-B fuse I need?
Order by the full part number with the amp rating on the end: TPA-B-25 for 25 amps or TPA-B-30 for 30 amps. The amp rating is the only variable on this fuse, so getting that suffix right is the whole order decision.
How fast can I get the Bussmann TPA-B-25 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Bussmann TPA-B-25 come with a warranty?
Absolutely. The Bussmann TPA-B-25 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Bussmann TPA-B-25?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Bussmann TPA-B-25 from ZenSupply?
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