Product Overview
Fusetron FNM-1/2 Time-Delay 0.5A 250V Midget Fuse – Unused NOS
This time-delay midget fuse provides supplemental protection for circuits that experience moderate inrush currents, offering a stable option for equipment where brief overloads should not cause nuisance interruption. Its 13/32 in / 1-1/2 in body fits standard midget holders used in machinery, lighting, and control assemblies.
Product Condition
Unused, New Old Stock.
Product Overview
The Bussmann Fusetron FNM-1/2 is a 0.5A, 250V AC dual-element slow-blow fuse designed for circuits with transformer inrush, motor startup surges, or other short-duration overloads. The construction includes a green color-coded cylindrical body with nickel-plated endcaps and ferrule terminals, supporting consistent contact in common supplemental fuse applications.
Key Features
- Time-delay, dual-element slow-blow design
- 0.5 A rating with 250 VAC capability
- Interrupting rating: 100 A at 250 VAC
- 10,000 A interrupting rating at 125 VAC
- Midget size: approx. 13/32 in diameter and 1-1/2 in length
- Nickel-plated brass or bronze endcaps
- Green identification color
- Non-indicating, non-rejection type
- UL listed and CSA certified
Applications
- Lighting and general-purpose circuits
- Small motors with moderate startup surges
- Control transformers
- Supplemental industrial and commercial protection
- Equipment requiring tolerance to short overloads
- Panel-mounted or enclosure-based midget holders
Frequently Asked Questions
What type of fuse is the FNM-1/2?
It is a time-delay, dual-element midget fuse designed to tolerate inrush currents.
Where is this fuse most commonly used?
It appears in lighting, transformers, small motors, and other circuits needing supplemental slow-blow protection.
Does this fuse fit standard holders?
Yes, its midget dimensions match common 13/32 in x 1-1/2 in fuse holders.
Why choose a time-delay fuse?
The time-delay design prevents nuisance opening caused by short-duration overloads or startup surges.
You can use its transformer load capability with the time-delay dual-element design when placing it into a midget holder inside your control panel.
