BK/GBB-20-R

## **1 1 ⁄4" x 1 ⁄4" Ceramic Tube Fuses** GBB Series, Very Fast-Acting 

## **Description** 

- Very fast-acting 

- Optional axial leads available 

- [1] ⁄4" x 1[1] ⁄4" (6.3 x 32mm) physical size 

- Ceramic tube, nickel-plated brass endcap construction 

- 100pc-carton quantity weighs 1.0 lb (0.45 kg) 

- UL Recognized product meets standard 248-14 

|**Electrical Characteristics**|**Electrical Characteristics**|**Electrical Characteristics**|
|---|---|---|
|**Rated Current**|**% of Amp Rating**|**Opening Time**|
|1 - 20A|**% of Amp Rating**<br>100%|**Opening Time**<br>None|
||150%|2 minutes maximum|
||250%<br>400%|1 seconds maximum|
||400%|-|
|25, 30A|100%|None|
||150%|2 minutes maximum|
||250%|6 seconds maximum|
||400%|-|



## **Agency Information** 

- UL Recognized Card: 1-30A (JFHR2, E56412) 

- CSA Component Accepted Card: 1-30A (Class 1422-30 File 53787) 

## **Ordering** 

## **Dimensions - mm/in** 

**==> picture [192 x 126] intentionally omitted <==**

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38.10 32.82 38.10<br>IT (1.500) (1.292) (1.500)<br>cee 6.76  2 DIA. OF LEADS 7 ,<br>(0.266) 0.81<br>0–15 AMP:<br>(0.032)<br>1.02<br>20–30 AMP:<br>(0.040)<br>31.75 6.35<br>ee (1.250) (0.250) el<br>**----- End of picture text -----**<br>


• Specify packaging, product, and option code 

|**Ordering**<br>• Specify packaging, product, and option code<br>~~ee~~ ~~el~~<br>[~~[|~~<br>©<br>~~eyeeee~~<br>~~ee~~<br>~~PCS~~|**Ordering**<br>• Specify packaging, product, and option code<br>~~ee~~ ~~el~~<br>[~~[|~~<br>©<br>~~eyeeee~~<br>~~ee~~<br>~~PCS~~|**Ordering**<br>• Specify packaging, product, and option code<br>~~ee~~ ~~el~~<br>[~~[|~~<br>©<br>~~eyeeee~~<br>~~ee~~<br>~~PCS~~|**Ordering**<br>• Specify packaging, product, and option code<br>~~ee~~ ~~el~~<br>[~~[|~~<br>©<br>~~eyeeee~~<br>~~ee~~<br>~~PCS~~|**Ordering**<br>• Specify packaging, product, and option code<br>~~ee~~ ~~el~~<br>[~~[|~~<br>©<br>~~eyeeee~~<br>~~ee~~<br>~~PCS~~|**Ordering**<br>• Specify packaging, product, and option code<br>~~ee~~ ~~el~~<br>[~~[|~~<br>©<br>~~eyeeee~~<br>~~ee~~<br>~~PCS~~|**Ordering**<br>• Specify packaging, product, and option code<br>~~ee~~ ~~el~~<br>[~~[|~~<br>©<br>~~eyeeee~~<br>~~ee~~<br>~~PCS~~|**Ordering**<br>• Specify packaging, product, and option code<br>~~ee~~ ~~el~~<br>[~~[|~~<br>©<br>~~eyeeee~~<br>~~ee~~<br>~~PCS~~|
|---|---|---|---|---|---|---|---|
|**Specifications**<br>C~~e~~<br>~~eyeeee~~<br>~~ee~~<br>~~PCS~~||||||||
|**Part Number**<br>~~ey~~<br>~~PCS~~|**Voltage**<br>**Rating**<br>~~ee~~||**AC Interrupting**<br>**Rating (amps)***<br>~~ee~~||**DC Interrupting**<br>**Rating (amps)***<br>**125Vdc**<br>~~ee~~|**Typical DC Cold**<br>**Resistance**<br>**(**Ω**)****<br>~~ee~~<br>~~ee~~|**Typical**<br>**Voltage**<br>**Drop (V)‡**<br>~~ee~~|
||**Vac**<br>~~ee~~|**Vdc**<br>~~ee~~|**250Vac**<br>~~ee~~|**125Vac**<br>~~ee~~||||
|**GBB-1-R**<br>~~ey~~<br>~~PCS~~|250<br>~~ee~~|125<br>~~ee~~|200<br>~~ee~~|10,000<br>~~ee~~|10,000<br>~~ee~~|0.17750<br>~~ee~~<br>~~ee~~|0.2096<br>~~ee~~|
|**GBB-1-1/4-R**<br>~~ey ~~<br>~~PCS~~<br>~~PO~~|250<br> ~~ee~~|125<br>~~ee~~|200<br>~~ee~~|10,000<br>~~ee~~|10,000<br>~~ee~~|0.17900<br>~~ee~~<br>~~ee~~|0.2497<br>~~ee~~|
|**GBB-2-R**<br>~~PCS~~<br>~~PO~~<br>~~PCS~~|250|125|200|10,000|10,000|0.06620<br>~~ee~~|0.1687|
|**GBB-3-R**<br>~~PO~~<br>~~PCS~~<br>~~Re~~|250<br>~~GGG~~|125<br>~~GGG~~|200<br>~~GGG~~|10,000<br>~~GGG~~|10,000<br>|0.04475<br>|0.1816<br>|
|**GBB-4-R**<br>~~PCS~~<br>~~Re~~<br>~~PCS~~|250<br>~~GGG~~|125<br>~~GGG~~|200<br>~~GGG~~|10,000<br>~~GGGOO~~|10,000<br>~~OO~~|0.03175<br>~~OO~~|0.1778<br>~~OO~~|
|**GBB-5-R**<br>~~Re ~~<br>~~PCS~~<br>~~PO~~|250<br> ~~GGG~~|125<br>~~GGG~~|200<br>~~GGG~~|10,000<br>~~GGGOO~~|10,000<br>~~OO~~|0.02125<br>~~OO~~|0.1217<br>~~OO~~|
|**GBB-6-R**<br><br>~~PCS~~<br>~~PO~~<br>~~PCS~~|250<br>|125<br>|200<br>|10,000<br>~~OO~~|10,000<br>~~OO~~|0.01800<br>~~OO~~|0.1324<br>~~OO~~|
|**GBB-7-R**<br>~~PO~~<br>~~PCS~~<br>~~Re~~|250<br>~~GGG~~|125<br>~~GGG~~|200<br>~~GGG~~|10,000<br>~~GGG~~|10,000<br>|0.01550<br>|0.1355<br>|
|**GBB-8-R**<br>~~PCS~~<br>~~Re~~<br>~~PCS~~|250<br>~~GGG~~|125<br>~~GGG~~|200<br>~~GGG~~|10,000<br>~~GGGOO~~|10,000<br>~~OO~~|0.01360<br>~~OO~~|0.1144<br>~~OO~~|
|**GBB-9-R**<br>~~Re ~~<br>~~PCS~~<br>~~PO~~|250<br> ~~GGG~~|125<br>~~GGG~~|200<br>~~GGG~~|10,000<br>~~GGGOO~~|10,000<br>~~OO~~|0.01070<br>~~OO~~|0.1218<br>~~OO~~|
|**GBB-10-R**<br><br>~~PCS~~<br>~~PO~~<br>~~PCS~~|250<br>|125<br>|200<br>|10,000<br>~~OO~~|10,000<br>~~OO~~|0.00934<br>~~OO~~|0.0877<br>~~OO~~|
|**GBB-12-R**<br>~~PO~~<br>~~PCS~~<br>~~Re~~|250<br>~~GGG~~|125<br>~~GGG~~|200<br>~~GGG~~|10,000<br>~~GGG~~|10,000<br>|0.00620<br>|0.0806<br>|
|**GBB-15-R**<br>~~PCS~~<br>~~Re~~<br>~~PCS~~|250<br>~~GGG~~|125<br>~~GGG~~|200<br>~~GGG~~|10,000<br>~~GGGOO~~|10,000<br>~~OO~~|0.00472<br>~~OO~~|0.0735<br>~~OO~~|
|**GBB-20-R**<br>~~Re ~~<br>~~PCS~~<br>~~PO~~|250<br> ~~GGG~~|125<br>~~GGG~~|200<br>~~GGG~~|200<br>~~GGGOO~~|200<br>~~OO~~|0.00330<br>~~OO~~|0.0728<br>~~OO~~|
|**GBB-25-R**<br><br>~~PCS~~<br>~~PO~~<br>~~Po—(itd~~|250<br><br>~~Po—(itd~~|125<br>|200<br>|200<br>~~OO~~|200<br>~~OO~~|0.00252<br>~~OO~~|0.0610<br>~~OO~~|
|**GBB-30-R**<br>~~PO~~<br>~~Po—(itd~~|250<br>~~Po—(itd~~|125|200|200|200|0.00206|0.0657|



- Interrupting ratings:  Interrupting ratings for 1-15A at 125Vdc was measured at 10,000A, 3.5 ms maximum, with time constant.  Ratings 20-30A at 125Vdc were measured at 200A, 0.5 ms maximum, with time constant.  Ratings 1-15A at 125Vac were measured at 10,000A, and 70% - 80% power factor.  The interrupting ratings for 1-30A at 250Vac were measured at 90% - 100% power factor. 

- ** DC Cold Resistance (Measured at <10% of rated current) 

- Typical Melting I[2] t (I[2] t was measured at listed interrupting rating and rated voltage) Interrupting ratings were measured at 70% to 80% power factor on AC. 

- Typical Voltage drop (Voltage drop was measured at 25°C±3°C ambient temperature at rated current) 

0709   BU-SB09209 

Data Sheet 2013 

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**Time-Current Curve** 

CURRENT  IN  AMPERECURRENT IN AMPSS 

|||CURRENT  IN  AMPERE<br>S<br>CURRENT IN AMPS|CURRENT  IN  AMPERE<br>S<br>CURRENT IN AMPS|CURRENT  IN  AMPERE<br>S<br>CURRENT IN AMPS|CURRENT  IN  AMPERE<br>S<br>CURRENT IN AMPS|CURRENT  IN  AMPERE<br>S<br>CURRENT IN AMPS|CURRENT  IN  AMPERE<br>S<br>CURRENT IN AMPS|CURRENT  IN  AMPERE<br>S<br>CURRENT IN AMPS|CURRENT  IN  AMPERE<br>S<br>CURRENT IN AMPS|CURRENT  IN  AMPERE<br>S<br>CURRENT IN AMPS|CURRENT  IN  AMPERE<br>S<br>CURRENT IN AMPS|CURRENT  IN  AMPERE<br>S<br>CURRENT IN AMPS|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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|TIME  IN  SECONDS||1-1/4<br>1<br>2<br>25<br>9<br>6<br>3<br>5<br>7<br>8<br>15<br>10<br>12<br>20<br>30|||||||||||
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|||**Packaging**|||||||||||
|**Packaging Code**|**Description**||||||||||||
|**BK**|100 fuses packed into a cardboard carton||||||||||||
|**BK1**|1,000 fuses packed into a cardboard carton||||||||||||
||||||||||||||
||**Option Code**||||||||||||
|**Option Code**|**Description**||||||||||||
|**B**|Sealed to withstand aqueous cleaning (board washable)||||||||||||
|**V**|Axial leads - copper tinned wire with nickel plated brass overcaps||||||||||||



The only controlled copy of this Data Sheet is the electronic read-only version located on the Cooper Bussmann 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. Cooper Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann 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. 

Life Support Policy: Cooper Bussmann does not authorize the use of any of its products for use in life support devices or systems without the express written approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. 

0709    BU-SB09209 

Data Sheet 2013 

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