H14FD 14×51 Semiconductor Fast Acting Fuse | aR 690V

H14FD 14x51mm semiconductor fast-acting fuse, aR class, 690V AC / 700V UL / 600V DC, 1A-63A, 100kA breaking capacity. IEC60269-4 & UL248-13 certified for UPS, inverter & VFD protection.

20+ Years Experience

Over 20 years in electrical protection and fuse manufacturing.

 

Strict Quality Control

Rigorous testing ensures reliable product performance.

 

                                                                                     H14FD/H14FF Semiconductor Fast Fuse

1. Use and use

This series of fuses is suitable for circuits with rated AC voltage IEC (690V) UL (700V) and DC (600V) rated current 1A-63A. The 100KA (AC) and 50KA (DC) segmented functions are mainly used for line overload and short circuit protection in electrical equipment, UPS system protection for small inverters, variable speed drive protection, and other similar 700V protection. The product complies with the provisions of national standard GB13539-4, International Power Commission standard IEC60269-4, and UL248-1/248-13

2.operational condition

The upper limit of ambient air temperature shall not exceed 125℃; the lower limit of ambient air temperature shall not be lower than-40℃; the altitude of the installation site shall not exceed 2000m (if exceeding this 2000m, the requirements shall be indicated, and the Company can design and develop according to customer requirements).

  1. Usage category

“aR” indicates the fuse used to protect the line overload and short circuit in the electrical device.

4:Product Dimensional Drawing

.H14FD

H14FD 14X51 semiconductor fast-acting fuse

 . H14FF

H14FD 14X51 semiconductor fast-acting fuse

6. Main technical parameters

NORated current

(A)

I2T(A2S)power LOSS

(W)

Rated voltage

(V)

model
110.20.31.15690V/700VH14FD01/H14FF01
220.91.81.75690V/700VH14FD02/H14FF02
346.7132.9690V/700VH14FD04/H14FF04
468352690V/700VH14FD06/H14FF06
584.3402.25690V/700VH14FD08/H14FF08
6104.3452.95690V/700VH14FD10/H14FF10
7125.4604.1690V/700VH14FD12/H14FF12
81613.11254.65690V/700VH14FD16/H14FF16
92026.82304.8690V/700VH14FD20/H14FF20
102552.53855.95690V/700VH14FD25/H14FF25
113296.77006.9690V/700VH14FD32/H14FF32
124021010507.8690V/700VH14FD40/H14FF40
135020018009690V/700VH14FD50/H14FF50
1463617290012.5690V/700VH14FD63/H14FF63

 

Frequently Asked Questions

What does “aR” usage category mean?
aR is the IEC 60269 usage category for semiconductor protection fuses. It provides short-circuit protection only (not overload) for diodes, thyristors, IGBTs and rectifiers. It clears fault currents in milliseconds to limit let-through energy and protect the semiconductor junction.
What breaking capacity does this fuse offer?
100 kA at AC 690/700V and 50 kA at DC 600V, suitable for heavy industrial short-circuit duty in drives, converters and power distribution equipment.
Which standards does this fuse comply with?
IEC 60269-4 (international), GB 13539-4 (Chinese national standard), and UL 248-1 / UL 248-13 (North American). Covers major global markets for industrial power electronics.