Ultra Rapid Fuses

Power semiconductors: Without the high-tech developments in the field of converters, thyristors or UPS, today's energy supply would be unthinkable. As important as these devices are, they are also highly sensitive to short-circuit currents. It is therefore reassuring to know that SIBA makes fuses that work so fast they are able to protect these semiconductors and so keep them working for very much longer. The name of this product range is "Ultra-rapid". They separate your investment from the power supply quickly and reliably. And we have designed them in such a way that even after a long time in service under constantly changing operating loads, they still maintain their condition. For we know that every tenth of a second counts if your semiconductor is to be kept safe from harm. 

Extremely high interrupting ratings 100kA – 300kA Class: gR and aR 

Voltage Ratings:  

660VAC to 1000VAC 750VDC 

Standards:

UL 248-13 IEC 60269-1 & 4 DIN VDE 0636-40 DIN 43653 

Designed for heavy duty applications for Solar Power (PV), Energy Storage Systems (ESS), protection for inverters, motor drives, DC drives, railway power and auxiliary circuits. 

Class: 

aR, gR and gRL (gS) 

Voltage Ratings:  

440VAC to 4200VAC 

Standards:

UIC 550 
IEC 60269-4 
IEC 60077-5 
VDE 0636-40 

Lowest power losses in the industry and highest cyclic load. Tested and approved by the world’s largest PV inverter manufacturers. 

Class: 

gPV, gFP 

Voltage Ratings:  

600VAC to 1500VAC 

Standards:

UL 248-19 
IEC 60269-6 

Approvals:

E341342
E341490 

Lowest power losses in the industry and highest cyclic load. Tested and approved by the world’s largest PV inverter manufacturers. 

Class: 

aR, gR, and gRL (gS) 

Voltage Ratings:  

440VAC to 4200VAC 

Standards:

UL 248-13 
IEC 60269-4 
IEC 60077-5 
VDE 0636-40 

Extreme high shock and vibration with high interrupting ratings to 120kA. 

Class: 

aR 

Voltage Ratings:  

240VAC to 700VAC 

Standards:

IEC 60269-4 
BS 88-4 

Ultra-Rapid gRL fuses have “aR” characteristics for short circuit protection of semiconductors and “gG” characteristics for overload protection for cables = “gRL”. 

Class: 

gRL 

Voltage Ratings:  

400VAC to 700VAC 

Standards:

IEC 60269-4 
DIN 43663 
VDE 0636 part 40 
UL 248-13 

Ultra-Rapid NH knife blade contact type fuses are available in various sizes and four voltage ratings. They follow DIN/VDE-IEC standards and can be fitted in an open fuse base. 

Class: 

gR, aR 

Voltage Ratings:  

500VAC, 690VAC, 1000VAC and 2000VAC 

Sizes:

000, 00, 0, 1, 2 and 3 

Standards:

UL 248-13 *NEW* 
DIN 43620 
DIN 43653 

Ultra-Rapid gRL fuses have “aR” characteristics for short circuit protection of semiconductors and “gG” characteristics for overload protection for cables = “gRL”. 

Class: 

gRL 

Voltage Ratings:  

400VAC to 700VAC 

Standards:

IEC 60269-4 
DIN 43663 
VDE 0636 part 40 
UL 248-13 

Available in six different sizes (mm): 5x20, 6.35x32, 10x38, 14x51, 22x58 and 27x60 with high interrupt ratings up to 300kA. 

Class: 

gR, aR and gRL (gS) 

Voltage Ratings:  

2500VAC to 1000VAC 

Standards:

UL 248-13 
IEC 60269-1 & 4 
DIN / VDE 0636-40 
DIN 43653 

Approvals:

E180276 

SIBA offers a variety of options to use on your UR fuses such as microswitches, bases, holders, and clips.