ABB CEF-S Current Limiting Fuses - IEC Standard 12kV and 24kV

ABB MV HV Medium - High Voltage Fuses

Indoor Fuses for MV Medium Voltage Cable Networks

ABB CEF-S Current Limiting Fuses - IEC Standard 12kV and 24kV

 

ABB CEF-S Current Limiting Fuses are applicable in medium voltage systems, especially for protection of distribution transformers, where superior performance of fuses is requested for fault currents within 100 ms.

ABB CEF-S Current Limiting Fuse Features

• Rated voltage: 12kV, 24kV and 30kV / 40.5kV, rated current 6.3A - 63 A
• Very good protection against faults in low voltage switchgears 
• Special design to achieve very low breaking current within 100ms 
• Low minimum breaking current 
• Low power losses, specially suitable in compact switchgear and ring main units 
• High breaking capacity and current limitation 
• Type tested according to IEC 60282-1 
• Versions CEF-S-TCU equipped with Temperature Control Unit, that protects against high temperature in enclosed compartments 
• Medium type striker, which is activated immediately when the fuse-elements melt 
• Dimensions according to IEC 60282-1 and DIN 43625

 

ABB CEF-S Current Limiting Fuse Ratings 

Rated fuse voltage 12kV and 24kV

Rated fuse current 10Amp - 50Amp

ABB CEF-S Current Limiting Fuse Ratings & Dimensions

Rated Voltage	Rated Current	Fuse Length	Fuse Dia.	Max Tested Breaking Current	Min Breaking Current	Lowest Current Which Gives Max Breaking Time Smaller Or Equal To 100ms	Fuse Resis-tance at 20°C	Power Loss At Rated Current
Un	In	e	D	I1	I3	I0.1s	R0	Pn
12kV	10A	292mm	65mm	50kA	55A	48A	187mΩ	27W
	16A	292mm	65mm	50kA	55A	80A	108.5mΩ	38W
	20A	292mm	65mm	50kA	72A	120A	72.3mΩ	39W
	25A	292mm	65mm	50kA	72A	160A	46.5mΩ	45W
	40A	292mm	65mm	50kA	100A	240A	24.5mΩ	54W
	50A	292mm	65mm	50kA	190A	330A	18.8mΩ	70W
24kV	10A	442mm	65mm	25kA	55A	48A	373.2mΩ	54W
	16A	442mm	65mm	25kA	55A	80A	186.6mΩ	67W
	20A	442mm	65mm	25kA	72A	120A	124.4mΩ	69W
	25A	442mm	65mm	25kA	72A	160A	93.3mΩ	70W
	40A	442mm	65mm	25kA	110A	240A	48.8mΩ	122W
30kV / 40.5kV	6.3A	537mm	65mm	20kA	50A	43A	927mΩ	47W
	10A	537mm	65mm	20kA	66A	54A	615mΩ	100W
	16A	537mm	65mm	20kA	52A	87A	313mΩ	121W
	20A	537mm	65mm	20kA	77A	122A	207mΩ	134W
	25A	537mm	65mm	20kA	134A	118A	175mΩ	162W
	31.5A	537mm	65mm	20kA	265A	202A	89.56mΩ	132W
	40A	537mm	87mm	20kA	172A	324A	60.3mΩ	126W
	50A	537mm	87mm	20kA	251A	500A	39.76mΩ	132W
	63A	537mm	87mm	20kA	334A	655A	29.7mΩ	164W

 

ABB CEF-S Current Limiting Fuses - IEC Standard 12kV and 24kV