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FNM-4 Eaton Bussmann FNM-4 is a 4A, 250VAC slow-blow cartridge fuse in a 5AG (10mm x 38mm) package with 200A breaking capacity.
Mfr Part #:

FNM-4

Available from 1 distributors
Mfr Name: Eaton - Electronics Division
Eaton - Electronics Division
Eaton Bussmann FNM-4 is a 4A, 250VAC slow-blow cartridge fuse in a 5AG (10mm x 38mm) package with 200A breaking capacity.
✓ Total Stock: 9 pcs
$ Price Range: $26.81 - $36.95

FNM-4 Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Bristol Electronics ✓
Non-Authorised Inventory information
9 pcs
On Request
9 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

FNM-4 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Approval Agency
Breaking Capacity @ Rated Voltage
Current Rating (Amps)
Fuse Type
Mounting Type
Response Time
Tape & Reel
Voltage Rating
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FNM-4 Description

Short technical summary and product information.

The Eaton Bussmann FNM-4 is a 4A, 250VAC slow-blow (time-delay) cartridge fuse designed for motor and transformer protection. It features a 200A interrupting rating at rated voltage, providing reliable overcurrent protection in circuits with high inrush currents.

 

Housed in a standard 5AG (10mm x 38mm) midget package, the FNM-4 requires a fuse holder for installation. Its slow-blow characteristic allows temporary overloads without nuisance opening, making it suitable for inductive loads.

 

The fuse carries approvals from CE, CSA, and UL, ensuring compliance with international safety standards. It is RoHS3 compliant and REACH unaffected, though these environmental claims are unverified.

FNM-4 Quick Information

Product Type: Cartridge Fuse
Canonical Name: Eaton Bussmann FNM-4 4A 250VAC Slow-Blow Cartridge Fuse
Subcategory: Slow-Blow Fuse

FNM-4 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

FNM-4 Estimated Pricing

Qty Low High
1+ $36.95 $36.95
5+ $30.66 $30.66
10+ $27.78 $27.78
50+ $26.81 $26.81

Estimated market price range - modelled values for guidance only, not live distributor offers.

FNM-4 Features

  • Rated 4A at 250VAC operation.
  • Slow-blow response for inductive loads.
  • 200A breaking capacity at rated voltage.
  • 5AG cartridge package requires holder.
  • UL, CSA, CE safety approved.

FNM-4 Applications

  • Protects motors from overcurrent faults.
  • Safeguards transformers against overloads.
  • Used in industrial control circuits.
  • Ideal for high inrush current applications.

FNM-4 FAQs

5 frequently asked questions generated from this part’s specifications.
What is the current rating of the FNM-4 fuse?

The FNM-4 is rated for 4A continuous current.

What is the voltage rating of the FNM-4?

The FNM-4 is rated for 250VAC.

What is the breaking capacity of the FNM-4?

The FNM-4 has a breaking capacity of 200A at rated voltage.

Is the FNM-4 a fast-acting or slow-blow fuse?

The FNM-4 is a slow-blow (time-delay) fuse.

What package size is the FNM-4?

The FNM-4 comes in a 5AG cartridge package, 10mm x 38mm (0.406" x 1.500").

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