Class CF Fuses | McMaster-Carr

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About Fuses

Prevent accidental contact with electrical circuits—these fuses have an enclosed design with recessed plug-in blades. Also known as dual-element fuses, they withstand current overload for a short time so they won't open when exposed to harmless temporary surges, such as when starting a motor.

Breakthrough current, labeled on the fuse as IR, is the maximum current that a fuse can safely stop in the event of a short circuit.

Fuses with blown fuse indicator have a dot on the side that turns red when the fuse blows.

For technical drawings and 3-D models, click on a part number.

Fuses													DIN-Rail Mount Fuse Blocks
Current, A	UL Class	Voltage	Breakthrough Current	Ht.	Wd.	Dp.	No. of Elements	Blown Fuse Indicator	Protection Type	Specifications Met		Each		Each
Manufacturer Equivalent: TCF
6	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	1.88"	3/4"	1"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	000000	0000000	000000
10	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	1.88"	3/4"	1"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	00000	0000000	00000
15	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	1.88"	3/4"	1"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	00000	0000000	00000
17 1/2	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	1.88"	3/4"	1"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	00000	0000000	00000
20	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	1.88"	3/4"	1"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	00000	0000000	00000
25	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	1.88"	3/4"	1"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	00000	0000000	00000
30	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	1.88"	3/4"	1"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	00000	0000000	00000
35	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	2.13"	1"	1.13"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	000000	0000000	00000
40	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	2.13"	1"	1.13"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	000000	0000000	00000
45	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	2.13"	1"	1.13"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	000000	0000000	00000
50	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	2.13"	1"	1.13"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	000000	0000000	00000
60	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	2.13"	1"	1.13"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	000000	0000000	00000
70	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	3.01"	1"	1.26"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	000000	0000000	00000
80	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	3.01"	1"	1.26"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	000000	0000000	00000
90	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	3.01"	1"	1.26"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	000000	0000000	00000
100	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	3.01"	1"	1.26"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	000000	0000000	00000
Manufacturer Equivalent: TCF-RN
1	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	1.88"	3/4"	1"	2	No	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	00000	0000000	00000
3	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	1.88"	3/4"	1"	2	No	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	00000	0000000	00000

DIN-Rail Mount Fuse Blocks for UL Class CF Fuses

These fuse blocks have covered terminals to prevent accidental contact with live electrical circuits. Gang them together to create double- and triple-pole configurations.

For technical drawings and 3-D models, click on a part number.

	For Fuse
For No. of Fuses	Current, A	Type	Protection Type	Voltage	Wire Connection Type	For DIN Rail Size, mm	Wd.	Ht.	Dp.	Specifications Met		Each
1	1-30	Branch Circuit	Touch Safe	600V AC/300V DC	Screw Terminals	35	0.76"	2.3"	1.36"	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	000000
1	35-60	Branch Circuit	Touch Safe	600V AC/300V DC	Screw Terminals	35	1.03"	2.6"	1.6"	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	00000
1	70-100	Branch Circuit	Touch Safe	600V AC/300V DC	Screw Terminals	35	1.05"	2.91"	2.01"	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	00000

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About Fuses

Touch-Safe Fuses

DIN-Rail Mount Fuse Blocks for UL Class CF Fuses