Bussmann BPT Time-Delay Plug Fuse, Edison Base, 125V
The Bussmann BPT Time-Delay Plug Fuse is built for Edison-base fuse sockets, delivering dependable overload protection in box cover units for small motor applications. Available in 10A and 20A ratings, each rated 125V with a 10 kAIC interrupt rating, this heavy-duty plug fuse pairs a durable plastic body with brass threads for consistent electrical contact, making it a direct replacement for standard Edison-base plug fuses in older panel and box cover installations. Its time-delay design rides through momentary overload conditions, such as motor starting current, without nuisance opening, making it a practical choice for electricians and facility teams servicing legacy Edison-base panels.
Key Features
- Amperage Rating: Available in 10A and 20A ratings to support small motor overload protection across a range of circuit sizes.
- Voltage Rating: 125V for standard residential and light commercial circuits.
- Time-Delay Operation: Allows momentary overload conditions, such as motor starting current, before opening the circuit.
- Edison Base: Standard Edison base threading for compatibility with common plug fuse holders and box cover units.
- Durable Construction: Plastic body with brass threads for durability and reliable electrical contact.
- Interrupt Rating: 10 kAIC interrupt rating for safe fault current interruption.
- Heavy-Duty Design: Heavy-duty construction packaged in a blister pack for retail and distribution convenience.
- Application: Intended for box cover units providing small motor overload protection in Edison-base panel setups.
Technical Specifications
- Amperage Options: 10A, 20A
- Voltage Rating: 125V
- Interrupt Rating: 10 kAIC
- Base: Edison
- Product Width: 13.6 IN
- Product Length: 19.19 IN
- Product Height: 12 IN
- Special Features: Heavy-duty, packaging type blister pack
- Product Details: Time delay
- Product Type: Time delay
Typical Applications
- Box Cover Units for Small Motor Overload Protection
- Edison-Base Fuse Panel Replacement
- Residential and Light Commercial Electrical Systems
- Panel Upgrades and Maintenance
- Small Motor Circuit Protection in Legacy Installations
Why Bussmann?
Bussmann builds the BPT Time-Delay Plug Fuse with a rugged plastic body and brass threads for consistent Edison-base contact, backed by a 10 kAIC interrupt rating for dependable fault current handling across both the 10A and 20A options. This time-delay plug fuse gives electricians and facility maintenance teams a heavy-duty, code-compatible replacement for small motor overload protection in box cover applications, supporting both panel upgrades and routine maintenance work. The heavy-duty build and blister-pack retail packaging make it a convenient stocking item for distributors and service trucks alike, ensuring a dependable Edison-base replacement is always on hand.
Manufacturer Resources
BP/T-20 Spec Sheet
Product Specs
- Voltage Rating:
- 125V
- Product Width:
- 13.6 IN
- Material Type:
- Plastic body, brass threads
- Product Length:
- 19.19 IN
- Special Features:
- Heavy-duty, packaging type blister pack
- Product Details:
- Time delay
- Mounting Method:
- Threaded
- Product Subgroup:
- Fuses
- Base:
- Edison
- Interrupt Rating:
- 10 kAIC
- Product Type:
- Plug Fuse
- Product Group:
- Circuit Protection
- Product Height:
- 12 IN
- Department:
- Electrical
- Application:
- Box cover units for small motor overload protection
- Amperage Rating:
- 10A - 20A
- Connection Type:
- Threaded
- Product Material:
- Plastic
Bussmann BP/T-10 – Frequently Asked Questions
1) Will a Bussmann BPT plug fuse screw into my old Edison-base fuse panel?
Yes. The BPT is a threaded Edison-base plug fuse, so it screws straight into standard Edison plug fuse holders and box cover units. The threads are brass in a plastic body for consistent contact in older sockets. If your panel has been converted with Type S rejection adapters, an Edison-base fuse will not thread into the adapter, and you need a Type S fuse instead.
2) Why use a time-delay plug fuse instead of a standard fast-acting one on a motor circuit?
A small motor draws several times its running current for a moment at startup. The BPT is a time-delay design, so it rides through that inrush instead of blowing. That is the whole reason it is specified for box cover units providing small motor overload protection. On a straight lighting or receptacle circuit with no motor load, a standard non-time-delay plug fuse works fine; on a fan, pump, or compressor circuit, the time-delay version stops nuisance openings.
3) Is 125V enough for the circuit I am fusing?
The BPT is rated 125V, which covers standard 120V line-to-neutral branch circuits in residential and light commercial work. It is not rated for a 240V two-pole circuit, so do not use it on a 240V range, dryer, or water heater pull-out. Those need a fuse rated for the higher voltage.
4) Can I use the BPT as a direct replacement for the plug fuses already in a legacy panel?
If what came out was an Edison-base plug fuse on a 120V circuit at 10A or 20A, the BPT threads into the same socket and is a like-for-like swap. Keep the amp rating the same as what the panel is marked for. Where the existing fuse is a Type S (rejection base) fuse, or the rating is 15A or 30A, the BPT is not the part.
5) What amp ratings does the Bussmann BPT come in?
Two: 10A (BP/T-10) and 20A (BP/T-20), both rated 125V. If your circuit calls for 15A or 30A, the BPT range does not cover it, so match the fuse to the conductor and the existing panel marking rather than substituting the nearest size up.
6) What is the interrupting rating on this plug fuse?
10 kAIC. That is the fault current the BPT can safely clear, which matters when an inspector or facility engineer asks whether the overcurrent device is adequate for the available fault current at that panel.
7) How does the BPT ship, and is it practical to stock on a service truck?
Each fuse comes in a blister pack, which is why it stocks well on a parts shelf or in a van bin without the fuse rattling loose. The construction is described as heavy-duty, with a plastic body and brass threads.
8) Does a plug fuse like this protect the motor, or just the wiring?
The BPT is specified for box cover units providing small motor overload protection, so it is doing overload duty on that circuit as well as clearing faults up to its 10 kAIC rating. It is not a motor starter overload relay, and it does not provide the running overload protection a separately sized overload element in a starter gives a larger motor.
How fast can I get the Bussmann BP/T-10 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 BP/T-10 come with a warranty?
Absolutely. The Bussmann BP/T-10 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 BP/T-10?
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 BP/T-10 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.