BK/FRN-R-1-6/10

Effective February 2016 Supersedes July 2013 

Technical Data1019 

## Fusetron™ FRN-R Class RK5 250Vac/125Vdc 1⁄10-60A, dual element, time-delay fuses 

## **Catalog symbols:** 

- FRN-R-_ (non-indicating) 

- FRN-R-_ID (indicating) 

## **Description:** 

Eaton Bussmann[®] series advanced protection, energy efficient FRN-R Class RK5 dual element, current-limiting, time-delay fuses with optional open fuse indication on select ratings. Time-delay – 10 seconds (minimum) at 500% of rated current (8 seconds for 1⁄10-30A sizes). 

## **Specifications:** 

## **Ratings** 

- Volts 

- 250Vac 

- 125Vdc 

- Amps 1⁄10-60A 

- Interrupting rating 

- 200kA Vac RMS Sym. 

- 20kA Vdc 

## **Agency information** 

- UL Listed, Std. 248-12, Class RK-5, Guide JDDZ, File E4273 

- CSA Certified, C22.2 No. 248.12, Class 142202, File 53787 

- CE 

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|||||
|---|---|---|---|
|Catalog numbers (amps) — non-indictaing fuses|
|eee|
|FRN-R-1⁄10|FRN-R-1-8⁄10|FRN-R-8*|
|OO|
|FRN-R-1⁄8|FRN-R-2|FRN-R-9*|
|FRN-R-15⁄100|FRN-R-2-1⁄4|FRN-R-10*|
|FRN-R-2⁄10|FRN-R-2-1⁄2|FRN-R-12*|
|OE|FRN-R-1⁄4|FRN-R-2-8⁄10|FRN-R-15*|
|FRN-R-3⁄10|FRN-R-3|FRN-R-17-1⁄2*|
|FRN-R-4⁄10|FRN-R-3-2⁄10|FRN-R-20*|
|FRN-R-1⁄2|FRN-R-3-1⁄2|FRN-R-25*|
|FRN-R-6⁄10|FRN-R-4|FRN-R-30*|
|FRN-R-8⁄10|FRN-R-4-1⁄2|FRN-R-35*|
|FRN-R-1|FRN-R-5|FRN-R-40*|
|FRN-R-1-1⁄8|FRN-R-5-6⁄10|FRN-R-45*|
|FRN-R-1-1⁄4|FRN-R-6|FRN-R-50*|
|FRN-R-1-4⁄10|FRN-R-6-1⁄4|FRN-R-60*|
|FRN-R-1-1⁄2|FRN-R-7|
|FRN-R-1-6⁄10|FRN-R-7-1⁄2|

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* Open fuse indication available by inserting the sufix “ID.” E.g., FRN-R-15ID. 

## **Carton Quantity:** 

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|||
|---|---|
|Amp rating|Carton qty.|
|1⁄10 – 60|10|

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## **Features:** 

- Provides motor overload, ground fault and short-circuit protection 

- Helps protect motors against burnout from overloads 

- Helps protect motors against burnout from single-phasing on three-phase systems 

- Simplifies and improves blackout prevention (selective coordination) 

- Dual-element fuses can be applied in circuits subject to temporary motor overloads and surge currents to provide both high performance short-circuit and overload protection 

- The overload element provides protection against low level overcurrent of overloads and will hold an overload which is five times greater than the ampere rating of the fuse for a minimum of ten seconds 

FRN-R Class RK5 250Vac/125Vdc 1⁄10-60A, dual element, time-delay fuses 

Technical Data 1019 Effective February 2016 

## **Dimensions - in:** 

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2"<br>(± 0.03)<br>0.56" (±0.01)<br>up to 30A<br>**----- End of picture text -----**<br>


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3"<br>(± 0.03)<br>0.81" (±0.01)<br>35 to 60A<br>**----- End of picture text -----**<br>


## **Recommended fuse blocks:** 

|**Fuse amps**|**1-pole**|**2-pole**|**3-pole**|
|---|---|---|---|
|upto 30|RM25030-1_|RM25030-2_|RM25030-3_|
|35 to 60|RM25060-1CR|RM25060-2CR|RM25060-3CR|



For additional information see data sheet no. 10289. 

## **Fuse reducers for Class R fuses** 

|**Fuse size**<br>**Amp size of fuse block or disconnect**<br>**switch**|**Catalog no.**<br>**(pairs)**|
|---|---|
|Upto 30A<br>60A|No.263-R|
|Upto 30A<br>100A<br>35 to 60A|No.213-R|
||No.216-R|
|35 to 60A<br>200A|No.226-R|



For additional information on Class R fuse reducers, see data sheet no 1118. 

2 

Eaton.com/bussmannseries 

FRN-R Class RK5 250Vac/125Vdc 1⁄10-60A, dual element, time-delay fuses 

Technical Data 1019 Effective February 2016 

## **Time-current curves — average melt:** 

## **1⁄10 to 6-1⁄4 amps** 

Amp rating 

**==> picture [426 x 583] intentionally omitted <==**

Current in amps 

3 

Eaton.com/bussmannseries 

FRN-R Class RK5 250Vac/125Vdc 1⁄10-60A, dual element, time-delay fuses 

Technical Data 1019 Effective February 2016 

## **Time-current curves — average melt:** 

## **8 to 60 amps** 

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Amp rating<br>8 10 15 30 60<br>Time in seconds<br>**----- End of picture text -----**<br>


Current in amps 

4 

Eaton.com/bussmannseries 

FRN-R Class RK5 250Vac/125Vdc 1⁄10-60A, dual element, time-delay fuses 

Technical Data 1019 Effective February 2016 

## **Current-limitation curves:** 

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**----- Start of picture text -----**<br>
400000 B<br>300000<br>200000<br>100000<br>90000<br>80000<br>70000<br>60000<br>50000<br>40000<br>30000<br>20000<br>60A<br>10000<br>9000 30A<br>8000<br>7000<br>6000<br>5000<br>4000<br>3000<br>A<br>2000<br>1000<br>RMS SYMMETRICAL CURRENT IN AMPS<br>A-B = ASYMMETRICAL AVAILABLE PEAK (2.3 X SYM RMS AMPS)<br>AMP RATING<br>INSTANTANEOUS PEAK-LET-THROUGH CURRENT IN AMPS<br>1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 20000 30000 40000 50000 60000 70000 80000 90000 100000 200000<br>**----- End of picture text -----**<br>


## **Current-limiting effects:** 

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Let-through current<br>Prosp. S.C.C. (apparent RMS Sym. vs. fuse rating)<br>**----- End of picture text -----**<br>


|—|30A|60A|
|---|---|---|
|5000|1000|2000|
|10,000|2000|3000|
|15,000|2000|3000|
|20,000|2000|4000|
|25,000|2000|4000|
|30,000|2000|4000|
|35,000|2000|4000|
|40,000|2000|5000|
|50,000|3000|5000|
|60,000|3000|5000|
|70,000|3000|6000|
|80,000|3000|6000|
|90,000|3000|6000|
|100,000|3000|6000|
|150,000|4000|7000|
|200,000|4000|8000|



5 

Eaton.com/bussmannseries 

FRN-R Class RK5 250Vac/125Vdc 1⁄10-60A, dual element, time-delay fuses 

Technical Data 1019 Effective February 2016 

The only controlled copy of this data sheet is the electronic read-only version located on the Eaton network drive. All other copies of this document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also reserves the right to change or update, without notice, any technical information  contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications. 

**Eaton** 1000 Eaton Boulevard Cleveland, OH 44122 Eaton.com 

Bussmann Division 114 Old State Road Ellisville, MO 63021 United States Eaton.com/bussmannseries 

© 2016 Eaton All Rights Reserved Printed in USA Publication No. 1019 — BU-SB13730 February 2016 

Eaton, Bussmann and Fusetron are valuable trademarks of Eaton in the U.S. and other countries. You are not permitted to use the Eaton trademarks without prior written consent of Eaton. 

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