Bussmann SR-5F-4A-AP Sub-Minia...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$51.79
$1.68
Bussmann SR-5F-4A-AP Eaton series fast-acting fuse

Bussmann SR-5F-4A-AP Sub-Miniature Fast-Acting Fuse, 4A 250V

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Model: SR-5F-4A-AP
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$51.79
$1.68
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Bussmann SR-5F-4A-AP Sub-Miniature Fast-Acting Fuse, 4A 250V

The Bussmann SR-5F-4A-AP is an Eaton Bussmann series sub-miniature fast-acting fuse built to protect sensitive circuits against harmful overcurrents. Rated 4A at 250V with a 50 kAIC interrupt rating at 250 Vac, this compact radial-lead fuse is designed for socket mounting in electronic and control-circuit applications. Its fast-acting response and wide -40° to 125°C operating temperature range make it a dependable choice for demanding low-voltage protection duties.

Key Features

  • Amperage Rating: 4A for precise overcurrent protection in low-current circuits.
  • Voltage Rating: 250V for use in standard low-voltage electronic and control circuits.
  • Interrupt Rating: 50 kAIC at 250 Vac, allowing the fuse to safely clear high fault currents.
  • Fast-Acting Response: Opens in 4 hrs. minimum at 100%, 10 mins. maximum at 150%, and 2 mins. maximum at 200% of rated current for quick fault clearing.
  • Operating Temperature: Rated from -40° to 125°C for reliable performance across a wide thermal range.
  • Sub-Miniature Construction: Compact .343" length by .6" diameter by .307" height body with radial leads for socket mounting.
  • Non-Indicating Design: Standard non-indicating fuse element for straightforward circuit protection.

Technical Specifications

  • Amperage Rating: 4A
  • Application: Protects against harmful overcurrents
  • Frequency Rating Maximum: 50 HZ
  • Fuse Indicator: Non Indicating
  • Interrupt Rating: 50 kAIC at 250 Vac
  • Melting L2t: Typical melting: 35.4 I2t (10 in) at 1mS
  • Operating Temperature: -40° to 125°C
  • Packaging Type: Standard
  • Resistance: Typical DC cold: .026 ohms
  • Response Time: 4 hrs. minimum at 100%, 10 mins. maximum at 150%, 2 mins. maximum at 200%
  • Used With: Radial leads
  • Voltage Drop: Maximum: 330 mV at 1 in*
  • Voltage Rating: 250V
  • Product Type: Sub miniature
  • Product Length: .343 IN
  • Product Details: Sub miniature
  • Product Diameter: .6 IN
  • Mounting Method: Socket
  • Item Quantity: Ammo-pack taped 1000 per box
  • Product Height: .307 IN
  • Product Weight: .1 LB
  • Product Width: .343 IN

Typical Applications

  • Electronic Circuit Protection
  • Control Panel and Equipment Wiring
  • Socket-Mounted Fuse Holder Assemblies
  • Sub-Miniature Electronic Devices
  • Overcurrent Protection for Low-Voltage Circuits

Why Bussmann?

Bussmann by Eaton engineers this sub-miniature fuse for consistent, dependable overcurrent protection backed by a 50 kAIC interrupt rating and a defined fast-acting response curve. Its radial-lead, socket-mount construction and wide -40° to 125°C operating range make it a reliable choice for professionals who need code-compliant circuit protection they can count on.

Manufacturer Resources

Product Specs

Amperage Rating:
4A
Application:
Protects against harmful overcurrents
Frequency Rating Maximum:
50 HZ
Fuse Indicator:
Non Indicating
Interrupt Rating:
50 kAIC at 250 Vac
Melting L2t:
Typical melting: 35.4 I2t (10 in) at 1mS
Operating Temperature:
-40° to 125°C
Packaging Type:
Standard
Resistance:
Typical DC cold: .026 ohms
Used With:
Radial leads
Voltage Drop:
Maximum: 330 mV at 1 in*
Voltage Rating:
250V
Product Group:
0
Department:
Electrical
Product Subgroup:
0
Product Type:
Sub miniature
Product Length:
.343 IN
Product Details:
Sub miniature
Product Diameter:
.6 IN
Mounting Method:
Socket
Item Quantity:
Ammo-pack taped 1000 per box
Product Height:
.307 IN
Product Weight:
.1 LB
Product Width:
.343 IN

Bussmann SR-5F-4A-AP – Frequently Asked Questions

How fast can I get the Bussmann SR-5F-4A-AP 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 SR-5F-4A-AP come with a warranty?
Absolutely. The Bussmann SR-5F-4A-AP 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 SR-5F-4A-AP?
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 SR-5F-4A-AP from ZenSupply?
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