Fuse Selection Chart

This chart contains some of the normally stocked and common fuse styles and ratings. Many more styles and current ratings are available upon request.

Fuse Type	Size	Voltage Rating	Current Rating	Interrupt Speed	Part Number
Weidmuller Ceramic Cartridge	5mm x 20mm	250 VAC	0.1 Amp	Fast	43030
		250 VAC	0.2 Amp	Fast	43040
		250 VAC	0.25 Amp	Fast	43050
		250 VAC	0.5 Amp	Fast	43060
		250 VAC	0.63 Amp	Fast	43900
		250 VAC	1.0 Amp	Fast	43070
		250 VAC	1.6 Amp	Fast	43080
		250 VAC	2.0 Amp	Fast	43090
		250 VAC	2.5 Amp	Fast	43100
		250 VAC	3.15 Amp	Fast	43110
		250 VAC	4.0 Amp	Fast	43120
		250 VAC	5.0 Amp	Fast	43130
		250 VAC	6.3 Amp	Fast	43140
Weidmuller Pop-up Indicator	5mm x 25mm	250 VAC	0.1 Amp	Slow	42910
		250 VAC	0.25 Amp	Medium	54690
		250 VAC	0.5 Amp	Medium	51030
		250 VAC	0.8 Amp	Medium	64640
		250 VAC	1.0 Amp	Medium	26580
		250 VAC	10 Amp	Medium	19310
		250 VAC	2.0 Amp	Fast	19270
		250 VAC	4.0 Amp	Fast	19280
		250 VAC	6.3 Amp	Fast	19290
Weidmuller Ceramic Cartridge	1/4" x 1-1/4"	250 VAC	0.5 Amp	Fast	53380
		250 VAC	0.5 Amp	Fast	43190
		250 VAC	1.0 Amp	Fast	52550
		250 VAC	2.0 Amp	Fast	29450
		250 VAC	3.0 Amp	Fast	29570
		250 VAC	5.0 Amp	Fast	29460
		250 VAC	7.0 Amp	Fast	29580
		250 VAC	10.0 Amp	Fast	29390
Weidmuller Specialty Fuses	E 14/4	380 VAC	4 Amp		13750
	E 14/10	380 VAC	10 Amp		32840
	E 18/35	380 VAC	35 Amp		36150
	E 18/50	380 VAC	50 Amp		36160
Bussman GMA Glass Cartridge	5mm x 20mm	250 VAC	63 mA	Fast	GMA-63-R
Time-Current Curves		250 VAC	100 mA	Fast	GMA-100-R
		250 VAC	125 mA	Fast	GMA-125-R
		250 VAC	200 mA	Fast	GMA-200-R
		250 VAC	250 mA	Fast	GMA-250-R
		250 VAC	315 mA	Fast	GMA-315-R
		250 VAC	500 mA	Fast	GMA-500-R
		250 VAC	750 mA	Fast	GMA-750-R
		250 VAC	1 Amp	Fast	GMA-1-R
		250 VAC	1.25 Amp	Fast	GMA-1.25-R
		250 VAC	1.5 Amp	Fast	GMA-1.5-R
		250 VAC	1.6 Amp	Fast	GMA-1.6-R
		250 VAC	2 Amp	Fast	GMA-2-R
		250 VAC	2.5 Amp	Fast	GMA-2.5-R
		250 VAC	3 Amp	Fast	GMA-3-R
		125 VAC	3.15 Amp	Fast	GMA-3.15-R
		125 VAC	4 Amp	Fast	GMA-4-R
		125 VAC	5 Amp	Fast	GMA-5-R
		125 VAC	6 Amp	Fast	GMA-6-R
		125 VAC	7 Amp	Fast	GMA-7-R
		125 VAC	8 Amp	Fast	GMA-8-R
		125 VAC	10 Amp	Fast	GMA-10-R
		125 VAC	15 Amp	Fast	GMA-15-R
Bussman GDB Glass Cartridge	5mm x 20mm	250 VAC	125 mA	Fast	S500-125
Time-Current Curves		250 VAC	160 mA	Fast	S500-160
		250 VAC	6.3 Amp	Fast	S500-6.3
		250 VAC	8 Amp	Fast	S500-8
Bussman GMC Glass Cartridge	5mm x 20mm	125 VAC	6 Amp	Medium	GMC-6-R
Time-Current Curves		125 VAC	8 Amp	Medium	GMC-8-R
		125 VAC	10 Amp	Medium	GMC-10-R
Bussman GDC Glass Cartridge	5mm x 20mm	250 VAC	40 mA	Slow	S506-40-R
Time-Current Curves		250 VAC	50 mA	Slow	S506-50-R
		250 VAC	100 mA	Slow	S506-100-R
		250 VAC	125 mA	Slow	S506-125-R
		250 VAC	160 mA	Slow	S506-160-R
		250 VAC	200 mA	Slow	S506-200-R
		250 VAC	250 mA	Slow	S506-250-R
		250 VAC	315 mA	Slow	S506-315-R
		250 VAC	500 mA	Slow	S506-500-R
		250 VAC	1 Amp	Slow	S506-1-R
		250 VAC	1.25 Amp	Slow	S506-1.25-R
		250 VAC	1.6 Amp	Slow	S506-1.6-R
		250 VAC	2 Amp	Slow	S506-2-R
		250 VAC	3.15 Amp	Slow	S506-3.15-R
		250 VAC	4 Amp	Slow	S506-4-R
		250 VAC	5 Amp	Slow	S506-5-R
		250 VAC	6.3 Amp	Slow	S506-6.3-R
Bussman GDA Ceramic Cartridge	5mm x 20mm	250 VAC	50 mA	Fast	S501-50-R
Time-Current Curves		250 VAC	100 mA	Fast	S501-100-R
		250 VAC	200 mA	Fast	S501-200-R
		250 VAC	250 mA	Fast	S501-250-R
		250 VAC	500 mA	Fast	S501-500-R
		250 VAC	630 mA	Fast	S501-630-R
		250 VAC	1 Amp	Fast	S501-1-R
		250 VAC	1.6 Amp	Fast	S501-1.6-R
		250 VAC	2 Amp	Fast	S501-2-R
		250 VAC	2.5 Amp	Fast	S501-2.5-R
		250 VAC	3.15 Amp	Fast	S501-3.15-R
		250 VAC	4 Amp	Fast	S501-4-R
		250 VAC	5 Amp	Fast	S501-5-R
		250 VAC	6.3 Amp	Fast	S501-6.3-R
Bussman AGC Glass Cartridge	1/4" x 1-1/4"	250 VAC	50 mA	Fast	AGC-1/20-R
Time-Current Curves		250 VAC	100 mA	Fast	AGC-1/10-R
		250 VAC	125 mA	Fast	AGC-1/8-R
		250 VAC	250 mA	Fast	AGC-1/4-R
		250 VAC	500 mA	Fast	AGC-1/2-R
		250 VAC	600 mA	Fast	AGC-6/10-R
		250 VAC	1 Amp	Fast	AGC-1-R
		250 VAC	1.5 Amp	Fast	AGC-1-1/2-R
		250 VAC	2 Amp	Fast	AGC-2-R
		250 VAC	2.25 Amp	Fast	AGC-2-1/4-R
		250 VAC	2.5 Amp	Fast	AGC-2-1/2-R
		250 VAC	3 Amp	Fast	AGC-3-R
		250 VAC	4 Amp	Fast	AGC-4-R
		250 VAC	5 Amp	Fast	AGC-5-R
		250 VAC	6 Amp	Fast	AGC-6-R
		250 VAC	8 Amp	Fast	AGC-8-R
		250 VAC	10 Amp	Fast	AGC-10-R
		32 VAC	15 Amp	Fast	AGC-15-R
		32 VAC	20 Amp	Fast	AGC-20-R
Bussman MDL Glass Cartridge	1/4" x 1-1/4"	250 VAC	100 mA	Slow	MDL-1/10-R
Time-Current Curves		250 VAC	250 mA	Slow	MDL-1/4-R
		250 VAC	500 mA	Slow	MDL-1/2-R
		250 VAC	750 mA	Slow	MDL-3/4-R
		250 VAC	1 Amp	Slow	MDL-1-R
		250 VAC	1.25 Amp	Slow	MDL-1-1/4-R
		250 VAC	1.5 Amp	Slow	MDL-1-1/2-R
		250 VAC	2 Amp	Slow	MDL-2-R
		250 VAC	2.5 Amp	Slow	MDL-2-1/2-R
		250 VAC	3 Amp	Slow	MDL-3-R
		250 VAC	4 Amp	Slow	MDL-4-R
		250 VAC	5 Amp	Slow	MDL-5-R
		250 VAC	6 Amp	Slow	MDL-6-R
		250 VAC	6.25 Amp	Slow	MDL-6-1/4-R
		250 VAC	7 Amp	Slow	MDL-7-R
		250 VAC	8 Amp	Slow	MDL-8-R
		32 VAC	10 Amp	Slow	MDL-10-R
		32 VAC	15 Amp	Slow	MDL-15-R
		32 VAC	20 Amp	Slow	MDL-20-R
		32 VAC	25 Amp	Slow	MDL-25-R
Bussman ABC Ceramic Cartridge	1/4" x 1-1/4"	250 VAC / 125 VDC	1 Amp	Fast	ABC-1-R
Time-Current Curves		250 VAC / 125 VDC	2 Amp	Fast	ABC-2-R
		250 VAC / 125 VDC	4 Amp	Fast	ABC-4-R
		250 VAC / 125 VDC	5 Amp	Fast	ABC-5-R
		250 VAC / 125 VDC	6 Amp	Fast	ABC-6-R
		250 VAC / 125 VDC	7 Amp	Fast	ABC-7-R
		250 VAC / 125 VDC	8 Amp	Fast	ABC-8-R
		250 VAC / 125 VDC	10 Amp	Fast	ABC-10-R
		250 VAC / 125 VDC	15 Amp	Fast	ABC-15-R
		125 VAC / 125 VDC	25 Amp	Fast	ABC-25-R
Bussman MDA Ceramic Cartridge	1/4" x 1-1/4"	250 VAC	1 Amp	Slow	MDA-1-R
Time-Current Curves		250 VAC	10 Amp	Slow	MDA-10-R
		250 VAC	15 Amp	Slow	MDA-15-R
		250 VAC	25 Amp	Slow	MDA-25-R
Bussman KTK Cartridge Fuse	13/32" x 1-1/2"	600 VAC	25 Amp	Fast	KTK-25
Time-Current Curves		600 VAC	30 Amp	Fast	KTK-30
Bussman KTK-R Cartridge Fuse	13/32" x 1-1/2"	600 VAC	1 Amp	Fast	KTK-R-1
		600 VAC	10 Amp	Fast	KTK-R-10
		600 VAC	15 Amp	Fast	KTK-R-15
		600 VAC	20 Amp	Fast	KTK-R-20
Bussman FNQ Cartridge Fuse	13/32" x 1-1/2"	500 VAC	2 Amp	Slow	FNQ-2
Time-Current Curves		500 VAC	3 Amp	Slow	FNQ-3
		500 VAC	4 Amp	Slow	FNQ-4
Bussman FNM Cartridge Fuse	13/32" x 1-1/2"	250 VAC	0.25 Amp	Slow	FNM-1/4
		250 VAC	0.5 Amp	Slow	FNM-1/2
		250 VAC	0.6 Amp	Slow	FNM-6/10
		250 VAC	1 Amp	Slow	FNM-1
		250 VAC	1.25 Amp	Slow	FNM-1-1/4
		250 VAC	1.4 Amp	Slow	FNM-1-4/10
		250 VAC	2 Amp	Slow	FNM-2
		250 VAC	2.5 Amp	Slow	FNM-2-1/2
		250 VAC	3.2 Amp	Slow	FNM-3-2/10
		250 VAC	3.5 Amp	Slow	FNM-3-1/2
		250 VAC	4 Amp	Slow	FNM-4
		250 VAC	4.5 Amp	Slow	FNM-4-1/2
		250 VAC	5 Amp	Slow	FNM-5
		250 VAC	6 Amp	Slow	FNM-6
		250 VAC	6.25 Amp	Slow	FNM-6-1/4
		250 VAC	7 Amp	Slow	FNM-7
		250 VAC	8 Amp	Slow	FNM-8
		250 VAC	10 Amp	Slow	FNM-10
		250 VAC	12 Amp	Slow	FNM-12
		250 VAC	20 Amp	Slow	FNM-20
		250 VAC	30 Amp	Slow	FNM-30
Bussman FNQ-R Cartridge Fuse	13/32" x 1-1/2"	600 VAC	500 mA	Slow	FNQ-R-1/2
		600 VAC	600 mA	Slow	FNQ-R-6/10
		600 VAC	750 mA	Slow	FNQ-R-3/4
		600 VAC	800 mA	Slow	FNQ-R-8/10
		600 VAC	1 Amp	Slow	FNQ-R-1
		600 VAC	1.25 Amp	Slow	FNQ-R-1-1/4
		600 VAC	1.4 Amp	Slow	FNQ-R-1-4/10
		600 VAC	1.5 Amp	Slow	FNQ-R-1-1/2
		600 VAC	1.6 Amp	Slow	FNQ-R-1-6/10
		600 VAC	1.8 Amp	Slow	FNQ-R-1-8/10
		600 VAC	2 Amp	Slow	FNQ-R-2
		600 VAC	2.5 Amp	Slow	FNQ-R-2-1/2
		600 VAC	3 Amp	Slow	FNQ-R-3
		600 VAC	3.2 Amp	Slow	FNQ-R-3-2/10
		600 VAC	4 Amp	Slow	FNQ-R-4
		600 VAC	5 Amp	Slow	FNQ-R-5
		600 VAC	6 Amp	Slow	FNQ-R-6
		600 VAC	7 Amp	Slow	FNQ-R-7
		600 VAC	7.5 Amp	Slow	FNQ-R-7-1/2
		600 VAC	8 Amp	Slow	FNQ-R-8
		600 VAC	10 Amp	Slow	FNQ-R-10
		600 VAC	12 Amp	Slow	FNQ-R-12
		600 VAC	20 Amp	Slow	FNQ-R-20

Cartridge-style fuses provide convenience and are an excellent choice for use in Weidmuller Fused Terminal Blocks (such as the WSI 6, WSI 6/2, ASK 1, ZSI 2.5, ZSI 2.5/2, etc). Cartridge style fuses feature a metal part on each end that is used for the input and output electric current connection. The two ends are connected on te outside via a cylinder of a non-conductive (dielectric) material. This material is usually glass, fiberglass, or ceramic.

The two metal ends are connected internally via a filament or a thin wire. The size of this filament is specially designed to melt when the current through it reaches the design limit.

The inside of the cylinder may be empty (or air filled) or may be filled with more dielectric material to insure the safety of the equipment into which the fuse is installed.

The variety of Weidmuller terminal block product lines provides the engineer with a broad list of options for fuse selection. Smaller fuses such as the 5x20mm and 1/4" x 1-1/4" are easy to insert into the hinged top style of fuse blocks. These are usually selected for lower voltages and lower current rated applications. For higher current carrying applications a larger fuse such as the 13/32" x 1-1/2" size fuse may be more appropriate.

Always consult the time-current curve charts for the selected fuse to insure that the specified fuse will adequately protect the equipment according to the manufacturer's specifications.