The Fuse Class RK1 200A LPN-RK-SP Series from Bussmann is a time-delay, nonindicating UL Class RK1 fuse that provides reliable overcurrent protection for electrical circuits. Tolerant of temporary inrush currents, it prevents nuisance blowing from motor and equipment startups while also opening to disconnect the circuit when exposed to sustained loads and short circuits. Its rejection feature ensures proper installation with current-limiting capacity, making it ideal for upgrading older installations or newer equipment. With a capacity of 200 Amps, this fuse is suitable for a variety of applications in industrial, commercial, and residential settings.
Top product features:
Time-delay protection against nuisance blowing from motor and equipment startups
Current-limiting capacity for improved overcurrent protection
Modified terminals to prevent accidental downgrade from a current-limiting system
Top product applications:
Home appliances: Used in circuits that have heavy start-up currents like refrigerators or air conditioners to prevent damage and prolong their lifespan
Lighting systems: Installed as part of a branch circuit in buildings or industrial facilities where there is a high risk of overcurrent, such as offices, schools or hospitals
Outdoor use: Ideal for protecting outdoor equipment like pumps or irrigation systems from overloading or short circuits during startup, helping to maintain their functionality and safety
Time-delay, nonindicating UL Class RK1 fuses tolerate temporary inrush currents without opening, which prevents nuisance-blowing from motor and equipment startups. Also called slow-blow Class RK1 fuses, they open to disconnect an electrical circuit when exposed to sustained loads and short circuits. They have no indicator for identifying a blown fuse, so they're sometimes used with an indicating fuse block or cover.
UL Class RK1 fuses are more current-limiting than RK5 fuses to react more quickly to overcurrent. These fuses are the same size as Class H and K fuses, but have a rejection feature that prevents an accidental downgrade from a current-limiting system. Their modified terminals ensure a match with the rejection clips in Class R fuse holders that prevent the installation of fuses with a lower interrupting capacity. They're typically used in newer equipment, but can also be used with a Class H fuse holder to upgrade older installations from Class H or K fuses for improved overcurrent protection. These fuses are current-limiting to prevent electrical damage by disconnecting circuits before they're exposed to the full magnitude and duration of an overcurrent.
Technical Specifications
ItemFuse
Amps200 A
AC Voltage Rating250V AC
DC Voltage Rating250V DC
ClassRK1
SeriesLPN-RK-SP
Visual IndicationNonindicating
SpeedTime Delay
Body StyleBlade
Fits Fuse Block StyleRejection
Interrupt Rating100kA at 250V DC, 300kA at 250V AC
Fuse Size7-1/8 in L x 1-9/16 in dia
Length7 1/8 in
Diameter1 9/16 in
Equivalent Brand and SeriesBussmann LPN-RK-SP, Littelfuse LLNRK, Mersen A2D-R
Equivalent SeriesA2D-R, LLNRK, LPN-RK-SP
Compatible Fuse Block SeriesHM600, R250
Body MaterialMelamine
ElementDual
StandardsCE, UL Special Purpose Guide JFHR, Guide JDDZ, File E4273, CSA Class 1422-02, File 53787, CSA C22.2, No. 248.12
Manufacturer Details
Manufacturer: Bussmann
Condensed Mfg Number: LPNRK200SP
MPN: LPN-RK-200SP
Label Details
Hazardous Material: N
Green Material Flag: N
Country of Origin: MX
CA Prop 65 Wht Label: N
Classification Details
Harmonization Code: 8536100040
GDS Category Name: Class RK1 Fuses
GDS Family Name: Fuses
GDS Segment Name: Electrical
UNSPSC: 39121604
UNSPSC Class ID: 16
UNSPSC Commodity Name: Circuit protection devices and accessories
UNSPSC Commodity ID: 04
UNSPSC Commodity Name: Time delay fuses
UNSPSC Family ID: 12
UNSPSC Family Name: Electrical equipment and components and supplies
UNSPSC Segment ID: 39
UNSPSC Segment Name: Electrical Systems and Lighting and Components and Accessories and Supplies
We proudly cater to a diverse range of clientele, including government buyers, small to medium-sized enterprises, contractors, healthcare providers, academic institutions, members of our armed forces, first-responders, and the vibrant DIY community.
As part of our unwavering commitment to social responsibility, we dedicate a portion of each sale to support vital veteran non-profit organizations of national significance. Since our establishment in January 2013, GoVets has maintained a stellar rating from the Better Business Bureau (BBB) and garnered thousands of positive 5-star reviews. Recognized as one of the nation's fastest-growing private enterprises, our dedication to excellence is further reinforced by our prestigious diversity certifications, including certification by the Small Business Administration (SBA) as a Service-Disabled Veteran-Owned Small Business (SDVOSB), as well as certifications from New York State SDVOB, Florida VBE, and Disability:IN SDV-DOBE.
