GMD-3A

Technical Data **2019** 

Effective May 2017 Supersedes February 2009 

## GMD 

## 5 mm x 20 mm Time-delay glass tube fuses 

## **Agency information** 

- UL Listed, Guide JDYX, File E19180 

- UL Recognition Card (4A), Guide JDYX2, File E19180 

- CSA Certified, Class 1422-01, File 53787 

- PSE/JET, File 1641-31003-1001 

## **Ordering** 

- Specify product code: Insert packaging code prefix before part number. E.g. BK/GMD-250-R 

## **Product features** 

- Time-delay, low breaking capacity 

- Optional axial leads available 

- 5 x 20mm physical size 

- Nickel-plated brass endcap construction 

- Designed to UL/CSA 248-14 

- Specify option code if desired: For axial leads, insert “V” between catalog series and amp rating. E.g. BK/ GMD-V-250-R 

- With TR2 packaging code, lead wire length is 19.05mm 

|**Electrical Characteristics**|**Electrical Characteristics**|**Electrical Characteristics**|
|---|---|---|
|**Rated Current**<br>**% of Amp Rating**|**% of Amp Rating**|**Opening Time**|
|**% of Amp Rating**<br>100mA - 4A|**% of Amp Rating**<br>100%|**Opening Time**<br>None|
||135%|60 minutes maximum|
||200%|5 seconds minimum|
|||2 minutes maximum|



|**Specifications**<br>~~pf}~~|**Specifications**<br>~~pf}~~|**Specifications**<br>~~pf}~~|**Specifications**<br>~~pf}~~|**Specifications**<br>~~pf}~~|**Specifications**<br>~~pf}~~|**Specifications**<br>~~pf}~~|**Specifications**<br>~~pf}~~|**Specifications**<br>~~pf}~~|**Specifications**<br>~~pf}~~|
|---|---|---|---|---|---|---|---|---|---|
|**Part Number**<br>~~pf}~~|**Voltage**<br>**Interrupting Rating (amps)**<br>**Rating**<br>**Vac**<br>~~pf}~~|**Interrupting Rating (amps)**<br>**at Rated Voltage (50Hz)**||**Specifi**<br>**Typical DC**<br>**Cold Resistance**<br>**(**Ω**)****|**Typical**<br>**Melting I 2t**<br>**(amps)†**|**Typical**<br>**Voltage**<br>**Drop (mV)‡**|**Agency Approvals**|||
||||||||**UL**|**PSE**<br>**JET**|**CSA**|
|||**at Rated Voltage (50Hz)**<br>**250 Vac**|**at Rated Voltage (50Hz)**<br>**125 Vac**|||||||
|**GMD-125-R**<br>~~pf}~~|250<br>~~pf}~~|35|10,000|8.125|0.043|1600|X||X|
|**GMD-150-R**<br>~~pf}~~|250<br>~~pf}~~|35|10,000|6.065|0.046|1200|X||X|
|**GMD-200-R**|250|35|10,000|5.190|0.200|1100|X||X|
|**GMD-250-R**|250|35|10,000|3.455|0.4|950|X||X|
|**GMD-300-R**|250|35|10,000|3.215|0.650|800|X||X|
|**GMD-315-R**|250|35|10,000|2.400|0.890|750|X||X|
|**GMD-375-R**|250|35|10,000|1.625|0.890|650|X||X|
|**GMD-400-R**|250|35|10,000|1.505|1.2|600|X||X|
|**GMD-500-R**|250|35|10,000|1.0645|1.4|550|X||X|
|**GMD-600-R**|250|35|10,000|0.948|3.1|450|X||X|
|**GMD-630-R**|250|35|10,000|0.629|3.1|450|X||X|
|**GMD-750-R**|250|35|10,000|0.4425|4.7|410|X||X|
|**GMD-800-R**|250|35|10,000|0.4475|6.6|380|X||X|
|**GMD-1-R**|250|35|10,000|0.3065|12|310|X|X|X|
|**GMD-1.2-R**|250|100|10,000|0.299|16|280|X|X|X|
|**GMD-1.25-R**|250|100|10,000|0.1995|16|245|X|X|X|
|**GMD-1.5-R**|250|100|10,000|0.158|25|240|X|X|X|
|**GMD-1.6-R**|250|100|10,000|0.124|27|220|X|X|X|
|**GMD-2-R**|250|100|10,000|0.107|42|200|X|X|X|
|**GMD-2.5-R**|250|100|10,000|0.0905|94|195|X|X|X|
|**GMD-3-R**|250|100|10,000|0.0655|145|190|X|X|X|
|**GMD-4-R**|250|200|10,000|0.048|300|190|UR|X||



* Interrupting ratings (Interrupting ratings for 125mA - 3A were measured at 70% - 80% power factor on AC. The interrupting ratings for 4A were measured at 100% power factor on AC) 

- **  Typical 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) 

‡ Typical Voltage Drop (voltage drop was measured at 20°C ambient temperature at rated current) 

GMD 

Technical Data 2019 Effective May 2017 

5 mm x 20 mm Time-delay glass tube fuses 

## **Dimensions - mm** 

**==> picture [149 x 158] intentionally omitted <==**

**----- Start of picture text -----**<br>
38.10mm<br>  (±.38)<br>5.54mm<br>(±.20) | Ho<br>21.10mm<br>il (±.81)<br>(± ( 0 .5)<br>It<br>5.2mm   (±.38)<br>(+0.1/-0.2)<br>0.65mm<br> (REF)<br>C)<br>**----- End of picture text -----**<br>


## **Time-Current Curve** 

|**i**|**Packaging Code**|
|---|---|
|**Packaging Prefix**|**Description**|
|**i**<br>**BK**|100 fuses packed into a cardboard carton|
|**BK1**|1,000 fuses packed into a poly bag|
|**TR2**|1,500 fuses packed into tape on a reel (19.05mm lead wire length)|
|||
||**Option Code**|
|**Option Code**|**Description**|
|**V**|Axial leads - copper tinned wire with nickel plated brass endcaps|



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