What does FLNR stand for on a fuse?
The “R’ stands for rejection type. I believe they are the same just different manufacturers FRN-R is cooper/bussmann and FLNR is Littlefuse but you will need to check the performance curves.
What are FRN fuses used for?
Product Description. The Cooper Bussmann FRN-R-30 Amp Brass 250-Volt Fusetron Dual Element Time-Delay RK5 Cartridge Fuse provides motor overload, ground fault and short-circuit protection. Helps protect motors against burnout from single phasing on three phase systems.
What does FLNR stand for?
FLNR
| Acronym | Definition |
|---|---|
| FLNR | Flerov Laboratory of Nuclear Reactions |
What do letters mean on fuses?
The old military designation always starts with “F,” which stands for fuse. Next, the set of numbers (02) indicates the style. Style means the construction and dimensions (size) of the fuse. Following the style is a letter that represents the voltage rating of the fuse (G).
What are the different classes of fuses?
UL Fuse Classification Chart
| UL CLASS | FUSE OVERLOAD CHARACTERISTICS | INTERRUPTING RATING, AMPERES |
|---|---|---|
| CD | TIME-DELAY | 200,000 |
| G | TIME-DELAY | 100,000 |
| K5 | FAST-ACTING | 50,000 |
| H | RENEWABLE FUSES FAST-ACTING | 10,000 |
What is a Type R fuse?
Class R (“R” for rejection) fuses are high performance, 1⁄10 to 600A units, 250V and 600V, having a high degree of current-limitation and a short-circuit interrupting rating of up to 300,000A (RMS symmetrical). This feature permits Class R to be mounted in rejection type fuse- clips.
How do you read a fuse label?
The first letter(s) (TT, T, M, F, FF) tell you what type of fuse it is:
- FF = Fast Fast. Very Quick Acting. ( also known as Anti Surge)
- F = Fast. Quick Acting. ( also known as Anti Surge)
- M = Medium. “Normal” or Very Short Delay.
- T = Time. Time Delay or Slow Blow.
- TT = Time Time. Long Time Delay or Very Slow Blow.
Do fuses need to be UL listed?
Fuses which meet the requirements for current limiting fuses are required to be labeled “Current Limiting”. Fuse labels must include: UL/CSA fuse class, manufacturer’s name or trademark, current rating, AC and/or DC voltage rating, and AC and/or DC interrupting rating.
What is the difference between a Class J and Class R fuse?
Class R fuses are available with DC ratings. They have an interrupting rating of 200kA rms symmetrical and are separated into two separate classes, RK1 and RK5. Current ratings of UL Class J fuses range from 0A to 600A, and the voltage rating is 600VAC. Class J fuses are available with DC ratings.
What is Class G fuse?
What is a Class G, Fuse? A UL Class G fuse is a 600/480 volts AC current limiting, fuse that is rated to interrupt a minimum of 100,000 amps. Ampere ratings range from ½ amp to 60 amps. The type G fuse meets the NEC, requirements for branch circuit, protection.
Which is a rejection fuse, FRN or FRN-R?
Bussmann has a fuse named FRN-R. The R after the hyphen is a symbol to represent that the particular fuse is a “rejection” type fuse. Their design is slightly different and have higher interrupt ratings than the FRN type fuses. You cannot physically use an FRN fuse in an FRN-R type fuse block.
Which is the best Littelfuse FLNR series Fuse?
Littelfuse FLNR series fuses have been the superior UL Class RK5 dual-element time-delay fuses, and are the most widely used class of fuses. FLNR series fuses provide excellent protection for all types of circuits especially those containing motors. However, users and specifiers should consider the significant benefits offered by Indicator fuses.
Can you use a FRN fuse in a fuse block?
Their design is slightly different and have higher interrupt ratings than the FRN type fuses. You cannot physically use an FRN fuse in an FRN-R type fuse block. These fuse blocks are designed to accept only FRN-R type fuses. However, you can use an FRN-R type fuse in an FRN type fuse block.
What does a FLNR UL class rk5 fuse do?
The FLNR UL Class RK5 Fuse is a General Purpose fuse which provides short circuit and overload protection for all types of circuits especially those containing motors. The FRN-R UL Class RK5 Fuse also provides motor overload and Ground Fault and Short-Circuit protection, and also helps protect motors against burnout from overloads.