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Bussmann(R)
LOW-PEAK(R)
Dual-Element, Time-Delay Fuses Class RK1 -- 600 Vac/300 Vdc
Dimensional Data
LPS-RK_SPI
70-600A
NEW
A
DES
IGN
B
Dimensions (inches)
Ampere Ratings 70-100 110-200 225-400 450-600 7.88 9.63 11.63 13.38 "A" ( 0.062) ( 0.062) ( 0.094) ( 0.094) 1.11 1.61 2.36 2.88 "B" ( 0.020) ( 0.020) ( 0.020) ( 0.020)
Catalog Symbol: LPS-RK_SPi (600V) Ampere Rating: 70 to 600A Voltage Rating: ac: 600V (or less) dc: 300V (or less) Interrupting Rating: ac: 300,000A RMS Sym. dc: 100,000A Agency Information: UL Listed-Special Purpose**, Guide JFHR, File E56412 CSA Certified, (200,000 AIR) Class 1422-02, File 53787, Class RK1 per CSA C22.2 No. 248.12
Catalog Numbers
LPS-RK-70SPI LPS-RK-80SPI LPS-RK-90SPI LPS-RK-100SPI LPS-RK-110SPI LPS-RK-125SPI LPS-RK-150SPI LPS-RK-175SPI LPS-RK-200SPI LPS-RK-225SPI LPS-RK-250SPI LPS-RK-300SPI LPS-RK-350SPI LPS-RK-400SPI LPS-RK-450SPI LPS-RK-500SPI LPS-RK-600SPI --
Features: * High degree of current-limitation for maximum short-circuit protection. * Type 2 protection for IEC and NEMA starters when properly sized. * Permanent replacement fuse indication. * High inrush current motor protection. * Time-delay permits 130% FLA sizing for back-up motor overload protection, and single-phasing protection. * Low watt loss power consumption. * Electrically isolated end caps. * 300Vdc, UL Listed. Applications: * Branch distribution * Motors * Transformers * Solenoids * General purpose circuits
Recommended fuseblocks for Class R 600V fuses See Data Sheet: 1111
Fuse Reducers For Class R Fuses
Equipment Fuse Clips 200A 400A Desired Fuse (Case) Size 100A 100A 200A 100A 600A 200A 400A *Single reducer only (pair not required). For additional information, see Data Sheet: 1118. CE logo denotes compliance with European Union Low Voltage Directive (50-1000Vac, 75-1500Vdc). Refer to Data Sheet: 8002 or contact Bussmann Application Engineering at 636-527-1270 for more information. Catalog Number (Pairs) 600V No. 2621-R No. 2641-R No. 642-R No. 2661-R No. 2662-R No. 2664-R*
Available with tin plate option. Add suffix "-TP". (Ex.: LPS-RK-100SP-TP)
Carton Quantity and Weight--LPS-RK (600Vac)
Ampere Ratings 70-100 110-200 225-400 450-600 Qty. 1 1 1 1 Carton Lbs. 2.20 1.10 2.36 3.44 Weight* Kg. 1.0 0.5 1.1 1.5
*Weight per carton. ** Meets all performance requirements of UL Standard 248-12 for Class RK1 fuses.
For non-indicating version, the LPS-RK_SP is available. See Data Sheet: 1002
Form No. LPS-RK 70-600 Page 1 of 3 Data Sheet: 1064
8-26-04
SB04295
Bussmann(R)
LOW-PEAK(R)
Dual-Element, Time-Delay Fuses Class RK1 -- 600 Vac/300 Vdc
Time-Current Characteristic Average Melt
LPS-RK_SPI
70-600A
8-26-04
SB04295
Form No. LPS-RK 70-600 Page 2 of 3 Data Sheet: 1064
Bussmann(R)
LOW-PEAK(R)
Dual-Element, Time-Delay Fuses Class RK1 -- 600 Vac/300 Vdc
Current-Limitation Curves
B
LPS-RK_SPI
70-600A
400,000
INSTANTANEOUS PEAK LET-THROUGH CURRENT IN AMPS
100,000
600A 400A 200A
100A
10,000
A
1,000 100,000 200,000 300,000 10,000 1,000
RMS SYMMETRICAL CURRENTS IN AMPERES A-B=ASYMMETRICAL AVAILABLE PEAK (2.3 x SYMM RMS AMPS)
Current-Limiting Effects
Prosp. S.C.C. 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 50,000 60,000 80,000 100,000 150,000 200,000 250,000 300,000 100A 2,200 2,700 3,050 3,300 3,500 3,700 3,900 4,050 4,300 4,550 4,950 5,250 5,900 6,450 6,850 7,250 Let-Through Current (Apparent RMS Symmetrical) Versus Fuse Rating 200A 400A 600A 3,250 5,000 5,000 4,100 7,150 9,600 4,650 7,950 10,650 5,100 8,650 11,500 5,500 9,200 12,200 5,800 9,650 12,750 6,100 10,100 13,300 6,400 10,450 13,750 6,850 11,100 14,600 7,250 11,700 15,300 7,950 12,650 16,450 8,550 13,450 17,450 9,750 15,050 19,400 10,700 16,300 20,900 11,500 17,350 22,100 12,200 18,250 23,200
*Values derived from curve data.
The only controlled copy of this Data Sheet is the electronic read-only version located on the Bussmann Network Drive. All other copies of this document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Bussmann also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications.
AMPERE RATING
8-26-04
SB04295
Form No. LPS-RK 70-600 Page 3 of 3 Data Sheet: 1064

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