Blocks and Holders
134 www.littelfuse.com
Blocks and Holders
© 2005 Littelfuse • POWR-GARD™ Products Catalog
Semiconductor Fuse Blocks
LSCR001
LSCR002
1.88"
1.30"
0.70"
0.70"
0.203" × 0.30" SLOT
0.50" 1/4-20" × 1.00"
USABLE LENGTH
2.38"
1.34"
0.25"
2.13"
1.60"
1.00"
1.00"
0.75"
0.50"
0.203" × 0.30" SLOT
3/8-16"x1.00"
USABLE LENGTH
0.25"
0.50"
3.44"
2.44"
Modular-designed Semiconductor fuse blocks are designed to
accommodate a wide range of Semiconductor fuses, with a maxi-
mum diameter of 3". This modular design greatly reduces inventory
requirements. They are sold in pairs and are constructed of molded
phenolic, with plated steel studs.
Recommended Fuses
Semiconductor fuses. See tables below.
Specifications
Voltage rating: LSCR001: Accepts fuses 1” diameter or less at 600V.
Also accepts 13⁄16" diameter fuses at 700 — 1000V.
LSCR002: Accepts fuses up to 3" diameter at 1000V.
Ampere ratings: LSCR001: 1 – 400 ampere capacity.
LSCR002: 70 – 800 ampere capacity.
Approvals: UL Recognized (File No. E14721)
Stud Size: LSCR001: 1⁄4 - 20 thread (Torque: 65 In. LBS.)
LSCR002: 3⁄8 - 16 thread (Torque: 192 In. LBS.)
Base: Molded phenolic. 150° C temperature rating.
Terminal construction: Plated steel. Supplied with nut and belleville washer.
LSCR001
Semiconductor fuse block selection guide
Fuse Series Ampere Rating
L15S 70 – 400
L25S, LA30QS 35 – 60
L25S 70 – 200
L50S, LA50QS 35 – 60
L50S, LA50QS 70 – 100
L50S 125 – 200
L60S 35 – 60
L60S 70 – 100
L60S 125 – 200
L70S, LA70QS 35 – 60
L70S, LA70QS 70 – 100
KLC 1 – 30
KLC 35 – 60
LA100P 35 – 60
LSCR002
Semiconductor fuse block selection guide
Fuse Series Ampere Rating
L15S, LA15QS 500 – 800
L25S, LA30QS 225 – 700
L25S, LA30QS 800
L50S, LA50QS 225 – 400
L50S, LA50QS 450 – 600
L50S, LA50QS 700 – 800
L60S 225 – 400
L60S 450 – 600
L60S 700 – 800
L70S, LA70QS 125 – 200
L70S, LA70QS 225 – 400
L70S, LA70QS 450 – 800
KLC 70 – 100
KLC 125 – 200
KLC 225 – 400
KLC 450 – 800
LA100P 70 – 800
JLLN 700 – 1200
Blocks and Holders
135
www.littelfuse.com
Blocks and Holders
© 2005 Littelfuse • POWR-GARD™ Products Catalog
Semiconductor Fuse Blocks
Littelfuse 1LS series modular style semiconductor fuse blocks
accommodate a wide range of semiconductor fuses. Blocks are
provided in pairs with fuse mounting hardware.
• 2-piece modular design
• General purpose phenolic base
• Tin plated aluminum box lugs
• Dove-tailed interlocking feature (1LS101 only)
• Hex-head bolts and belleville washers provided
Littelfuse
Catalog No.
Ampere
Rating Wire Range Torque Rating Approvals
1LS101 100A #2/0 - 14 CU/AL 120 IN. LBS. UL Recognized
1LS102 400A 250MCM - #6 CU/AL 275 IN. LBS. UL Recognized
1LS103 400A 250MCM - #6 CU/AL 275 IN. LBS. UL Recognized
1LS104 600A 500MCM - #6 CU/AL 375 IN. LBS. UL Recognized
1LS108 400A 250MCM - #6 CU/AL 275 IN. LBS. Self-Certified
1LS109 400A 250MCM - #6 CU/AL 275 IN. LBS. Self-Certified
1LS110 400A 250MCM - #6 CU/AL 275 IN. LBS. Self-Certified
1LS101 1LS102
Dimensions for reference only.
Ordering Information
Dimensions
Specifications
Voltage Rating: 600 Volts
Ampere Range: 1 – 600 amperes
Approvals: UL Recognized under the components program
Insulator Base: 150° C general purpose phenolic
Box Lug Terminal: Tin plated aluminum
Blocks and Holders
136 www.littelfuse.com
Blocks and Holders
© 2005 Littelfuse • POWR-GARD™ Products Catalog
Semiconductor Fuse Blocks
Dimensions
1LS103 1LS104
1LS108
1LS109
1LS110
