UL Class Fuses

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	UL Class UL Class

RK5

RK1

	Current Current

	Manufacturer Equivalent Manufacturer Equivalent

	Voltage Voltage

	Fuse Type Fuse Type


Cartridge	Branch Circuit

	Protection Type Protection Type

Time Delay

Fast Acting

	Overall Length Overall Length

	Breakthrough Current Breakthrough Current

	Cartridge Fuse Style Cartridge Fuse Style

Ferrule

Knife Blade

	Blown Fuse Indicator Blown Fuse Indicator

Yes

	Specifications Met Specifications Met

	Overall Diameter Overall Diameter

	Number of Elements Number of Elements

	Rejection-Style End Rejection-Style End

Yes

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	UL File Number UL File Number

E4273

E2137

	CSA File Number CSA File Number

053787_C_000

012636_0_000

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Indicator Type Indicator Type

Dot

	Width Width

3/4"

	Depth Depth

1.13"

1.26"

	Height Height

519 Products

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About Fuses

UL Class CC Time-Delay Midget Fuses for Motors

These fuses can withstand the high inrush current caused by a motor starting.

UL Class CC Time-Delay
Midget Fuses for Transformers

Designed to handle high inrush currents and the initial current cycle unique to transformers, these fuses provide comparable performance with a smaller footprint than standard size fuses.

UL Class CC Fast-Acting Midget Fuses

These fuses open circuits quickly when surges are detected.

UL Class RK5 Fuses

Also known as dual-element fuses, these time-delay fuses withstand current overload for a short time so they won't open when exposed to harmless temporary surges, such as when starting a motor.

UL Class J Time-Delay Fuses for Tight Spaces

Also known as dual-element fuses, these fuses withstand current overload for a short time so they won't open when exposed to harmless temporary surges, such as when starting a motor.

UL Class J Fast-Acting Fuses for Tight Spaces

These fuses open circuits quickly when surges are detected.

UL Class RK1 Time-Delay Fuses

Also known as dual-element fuses, these fuses withstand current overload for a short time so they won't open when exposed to harmless temporary surges, such as when starting a motor.

UL Class RK1 Fast-Acting Fuses

These fuses open circuits quickly when surges are detected.

UL Class K5 Fuses

Use these fast-acting fuses in applications where temporary overload current is not present, such as in lighting and heating.

UL Class T Fuses for Extra-Tight Spaces

Smaller than UL Class J fuses, these fast-acting fuses can be used in extra-tight spaces such as meters, uninterruptible power supplies, and variable-speed drives.

UL Class G Time-Delay Midget Fuses

Able to withstand current overload for a short time, these fuses will not open when exposed to harmless temporary surges, such as when starting a motor.

UL Class G Fast-Acting Midget Fuses

These fuses open circuits quickly when surges are detected.

UL Class H Replaceable-Element Fuses

Replace the current-carrying element rather than the entire fuse after the fuse breaks. These fuses are fast-acting.

UL Class L High-Current Fuses

These time-delay fuses are suitable for high-current power applications.

Touch-Safe Fuses

Prevent accidental contact with electrical circuits—these fuses have an enclosed design with recessed plug-in blades.

About Fuses

UL Class CC Time-Delay Midget Fuses for Motors

UL Class CC Time-DelayMidget Fuses for Transformers

UL Class CC Fast-Acting Midget Fuses

UL Class RK5 Fuses

UL Class J Time-Delay Fuses for Tight Spaces

UL Class J Fast-Acting Fuses for Tight Spaces

UL Class RK1 Time-Delay Fuses

UL Class RK1 Fast-Acting Fuses

UL Class K5 Fuses

UL Class T Fuses for Extra-Tight Spaces

UL Class G Time-Delay Midget Fuses

UL Class G Fast-Acting Midget Fuses

UL Class H Replaceable-Element Fuses

UL Class L High-Current Fuses

Touch-Safe Fuses

Touch-Safe Fuses

UL Class CC Time-Delay
Midget Fuses for Transformers