POWR-GARD® Fuse Datasheet
Special Purpose
©June 2011 Littelfusewww.littelfuse.com 1
LA 070 URD 31 LI 350
Class
Littelfuse
Size
Mounting Type
Voltage
070=700 V
130 =130 0 V
Amp Rating
Straight-blade KI LI
Straight-blade LI LLI
Flat-type, one hole TTI TTI
700 V 1300 V
30
31
32
33
70
71
72
73
Description
Littelfuse North American style square body semiconductor
fuses provide maximum flexibility in equipment design and
ultimate protection for today’s power conversion equipment.
Available in different body sizes and multiple mounting
styles, the broad range of ampere ratings allows great
flexibility in equipment design.
Engineered to provide state-of-the-art protection for SCR’s,
diodes, thyristors, GTO’s, and IGBT devices, Littelfuse
square body fuses have pure die-cut elements embedded in
solidified sand to control arcing and lower I2t. All fuses are
also equipped with a blown fuse trip indicator.
Features
• Choice of mounting styles provides a wide choice for
equipment design.
• Broad range of ampere ratings in a given body size for
design flexibility.
• Very low I2t minimizes damage to protected components.
• Superior cycling ability for long, reliable life on high cyclic
loading.
• Extremely fast-acting and current-limiting for improved
protection to equipment.
Applications
Protection of rectifiers, inverters, DC drives, UPS systems,
reduced voltage motor starters, and other equipment in
globally accepted applications.
Specifications
Voltage Rating: AC: 700 V (LA070)
1300 V (LA130)
DC: Contact factory
Interrupting Rating: AC: 200 kA (LA070)
100 kA (LA130)
DC: Contact factory
Ampere Range: 63 – 2500 A
Approvals: UL Recognized Component
Ordering Information
SQUARE BODY SEMICONDUCTOR FUSES
700/1300 VAC • Very Fast-Acting • 63 – 2500 Amperes
Dimensions
Please refer to the Square Body dimensions
Web Resources
For additional information, visit: www.littelfuse.com/la070
POWR-GARD® Fuse Datasheet
Special Purpose
©June 2011 Littelfusewww.littelfuse.com 2
SQUARE BODY SEMICONDUCTOR FUSES
700/1300 VAC • Very Fast-Acting • 63-2500 Amperes
BODY
SIZE
AMPERE
RATING
RATED
VOLTAGE
MELTING I2T
(A2S X 103)
TOTAL I2T
@ RATED
VOLTAGE
(A2S X 103)
*WATTS LOSS
@ RATED
CURRENT
(W)
LONG BL ADE
CATALOG NUMBER
TYPE LI
SHORT BLADE
CATALOG NUMBER
TYPE KI
TAPPED TERMINAL
CATALOG NUMBER
TYPE T TI
30
63 700 0.2 1.2 14 LA070URD30LI0063 LA070URD30KI0063 LA070URD30TTI0063
80 700 0.33 1.9 19 LA070URD30LI0080 LA070URD30KI0080 LA070URD30TTI0080
100 700 0.47 2.7 26 LA070URD30LI0100 LA070URD30KI0100 LA070URD30TTI0100
125 700 0.85 4.9 30 LA070URD30LI0125 LA070URD30KI0125 LA070URD30TTI0125
160 700 1.6 9.2 37 LA070URD30LI0160 LA070URD30KI0160 LA070URD30TTI0160
200 700 316.7 42 ⁄ 43 LA070URD30LI0200 LA070URD30KI0200 LA070URD30TTI0200
250 700 5.8 32.4 48 ⁄ 50 LA070URD30LI0250 LA070URD30KI0250 LA070URD30TTI0250
315 700 12 67 53 ⁄ 55 LA070URD30LI0315 LA070URD30KI0315 LA070URD30TTI0315
350 700 15.5 86 57 ⁄ 60 LA070URD30LI0350 LA070URD30KI0350 LA070URD30TTI0350
400 700 23 130 60 ⁄ 65 LA070URD30LI0400 LA070URD30KI0400 LA070URD30TTI0400
450 700 26 165 80 ⁄ 88 LA070URD30LI0450 LA070URD30KI0450 LA070URD30TTI0450
500 700 41 264 80 ⁄ 88 LA070URD30LI0500 LA070URD30KI0500 LA070URD30TTI0500
550 700 52 330 80 ⁄ 90 LA070URD30LI0550 LA070URD30KI0550 LA070URD30TTI0550
31
200 700 2.5 14.6 45 LA070URD31LI0200 LA070URD31KI0200 LA070URD31TTI0200
250 700 4.7 27 52 LA070URD31LI0250 LA070URD31KI0250 LA070URD31TTI0250
315 700 7.5 43 65 LA070URD31LI0315 LA070URD31KI0315 LA070URD31TTI0315
350 700 10.5 59 67 LA070URD31LI0350 LA070URD31KI0350 LA070URD31TTI0350
400 700 19 110 68 LA070URD31LI0400 LA070URD31KI0400 LA070URD31TTI0400
450 700 26.5 150 70 LA070URD31LI0450 LA070URD31KI0450 LA070URD31TTI0450
500 700 37 210 70 ⁄ 72 LA070URD31LI0500 LA070URD31KI0500 LA070URD31TTI0500
550 700 52 300 70 ⁄ 75 LA070URD31LI0550 LA070URD31KI0550 LA070URD31TTI0550
630 700 75 421 75 ⁄ 85 LA070URD31LI0630 LA070URD31KI0630 LA070URD31TTI0630
700 700 95 530 85 ⁄ 95 LA070URD31LI0700 LA070URD31KI0700 LA070URD31TTI0700
800 700 140 880 105 ⁄ 120 LA070URD31LI0800 LA070URD31KI0800 LA070URD31TTI0800
32
400 700 15 86 72 ⁄ 75 LA070URD32LI0400 LA070URD32KI0400 LA070URD32TTI0400
450 700 22 124 77 ⁄ 80 LA070URD32LI0450 LA070URD32KI0450 LA070URD32TTI0450
500 700 28 157 85 ⁄ 90 LA070URD32LI0500 LA070URD32KI0500 LA070URD32TTI0500
550 700 37 211 90 ⁄ 95 LA070URD32LI0550 LA070URD32KI0550 LA070URD32TTI0550
630 700 54 302 95 ⁄ 105 LA070URD32LI0630 LA070URD32KI0630 LA070URD32TTI0630
700 700 76 432 100 ⁄ 110 LA070URD32LI0700 LA070URD32KI0700 LA070URD32TTI0700
800 700 115 648 110 ⁄ 120 LA070URD32LI0800 LA070URD32KI0800 LA070URD32TTI0800
900 700 170 972 110 ⁄ 125 LA070URD32LI0900 LA070URD32KI0900 LA070URD32TTI0900
1000 700 240 1350 115 ⁄ 135 LA070URD32LI1000 LA070URD32KI1000 LA070URD32TTI1000
1100 650 270 1620 140 ⁄ 165 LA065URD32LI1100 –LA065URD32TTI1100
1250 600 410 2100 150 ⁄ 180 LA060URD32LI1250 –LA060URD32TTI1250
1400 550 555 2600 160 ⁄ 190 LA055URD32LI1400 –LA055URD32TTI1400
1600 550 870 4000 165 ⁄ 195 LA055URD32LI1600 –LA055URD32TTI1600
1800 500 1050 4400 195 ⁄ 330 LA050URD32LI1800 –LA050URD32TTI1800
33
500 700 19 108 105 LA070URD33LI0500 LA070URD33KI0500 LA070URD33TTI0500
550 700 27 151 105 ⁄ 110 LA070URD33LI0550 LA070URD33KI0550 LA070URD33TTI0550
630 700 40 227 110 ⁄ 120 LA070URD33LI0630 LA070URD33KI0630 LA070URD33TTI0630
700 700 55 324 115 ⁄ 125 LA070URD33LI0700 LA070URD33KI0700 LA070URD33TTI0700
800 700 95 529 120 ⁄ 130 LA070URD33LI0800 LA070URD33KI0800 LA070URD33TTI0800
900 700 135 760 120 ⁄ 135 LA070URD33LI0900 LA070URD33KI0900 LA070URD33TTI0900
1000 700 170 970 135 ⁄ 155 LA070URD33LI1000 LA070URD33KI1000 LA070URD33TTI1000
1100 700 240 1360 135 ⁄ 160 LA070URD33LI1100 LA070URD33KI1100 LA070URD33TTI1100
1250 700 350 2000 150 ⁄ 180 LA070URD33LI1250 LA070URD33KI1250 LA070URD33TTI1250
1400 700 480 2700 160 ⁄ 200 LA070URD33LI1400 LA070URD33KI1400 LA070URD33TTI1400
1600 650 555 3250 210 ⁄ 240 LA065URD33LI1600 –LA065URD33TTI1600
1800 650 720 4330 225 ⁄ 260 LA065URD33LI1800 –LA065URD33TTI1800
2000 600 950 5000 250 ⁄ 290 LA060URD33LI2000 –LA060URD33TTI2000
2250 550 1250 5900 280 ⁄ 330 LA055URD33LI2250 –LA055URD33TTI2250
2500 500 1870 7600 280 ⁄ 330 LA050URD33LI2500 –LA050URD33TTI2500
*Watts loss data is published for both blade and tapped style mounting configurations.
When two watts loss values are shown, this represents tapped/blade values respectively.
Contact Littelfuse for characteristic curves.
POWR-GARD® Fuse Datasheet
Special Purpose
©June 2011 Littelfusewww.littelfuse.com 3
Fuses — Special Purpose
SQUARE BODY SEMICONDUCTOR FUSES
700/1300 VAC • Very Fast-Acting • 63-2500 Amperes
Dimensions for reference only.
CATALOG NUMBER DIMENSIONS IN INCHES (mm)
A B C D E F G H J
LA070URD30KI (63-550) 1.57
(40)
0.98
(25)
0.49
(12.5)
0.83
(21)
0.71
(18)
2.68
(68)
4.21
(107)
5.08
(129)
0.41
(10.5)
LA070URD31KI (200-800) 2.01
(51)
0.98
(25)
0.49
(12.5)
1.0
(25.5)
0.89
(22.5)
2.66
(6 7.6 )
4.22
(107.1)
5.07
(128.8)
0.56
(14.3)
LA070URD32KI (400-1000) 2.36
(60)
1.26
(32)
0.63
(16)
1.18
(30)
1.06
(27)
2.92
(74.2)
4.29
(109)
5.28
(134)
0.57
(14.6)
LA070URD33KI (500-1400) 2.93
(74.5)
1.57
(40)
0.79
(20)
1.46
(37.2)
1.35
(34.2)
2.97
(75.4)
4.24
(107.6 )
5.28
(134)
0.63
(15.9)
Dimensions for reference only.
CATALOG NUMBER DIMENSIONS IN INCHES (mm)
A B C D E F G H J
LA070URD30LI (63-550) 1.57
(40)
0.98
(25)
0.49
(12.5)
0.83
(21)
0.71
(18)
3.45
(8 7.6 )
4.98
(126.6)
5.85
(148.6)
0.41
(10.5)
LA070URD31LI (200-800) 2.01
(51)
0.98
(25)
0.49
(12.5)
1.0
(25.5)
0.89
(22.5)
3.61
(91.6)
4.82
(122.4)
5.85
(148.6)
0.57
(14.6)
LA070URD32LI (400-1000)
LA065URD32LI (1250)
LA055URD32LI (1400-1600)
LA050URD32LI (1800)
2.36
(60)
1.26
(32)
0.63
(16)
1.18
(30)
1.06
(27)
3.71
(94.2)
5.08
(129)
6.02
(153)
0.57
(14.6)
LA070URD33LI (500-1400)
LA065URD33LI (1600-1800)
LA060URD33LI (2000)
LA055URD33LI (2250)
LA050URD33LI (2500)
2.93
(74.5)
1.57
(40)
0.79
(20)
1.46
(37.2)
1.35
(34.2)
3.72
(94.4)
4.98
(126.6)
6.02
(153)
0.63
(15.9)
Dimensions for reference only.
CATALOG NUMBER DIMENSIONS IN INCHES (mm)
A B C
LA070URD30TTI (100-550) 1.57
(40)
1.00
(25)
5⁄16-18 x 0.35
LA070URD31TTI (200-800) 2.00
(50.8)
1.19
(30.2)
5⁄16-18 x 0.35
LA070URD32TTI (400-1000)
LA065URD32TTI (1100)
LA060URD32TTI (1250)
LA055URD32TTI (1400-1600)
2.37
(60.3)
1.50
(38.1)
3⁄8-16 x 0.35
LA060URD33TTI (1800)
LA070URD33TTI (500-1400)
LA065URD33TTI (1600)
LA060URD33TTI (2000)
LA055URD33TTI (2250)
LA050URD33TTI (2500)
2.94
(74.5)
1.81
(46)
1⁄2-18 x 0.35
TYPE TTI
TYPES KI AND LI
Dimensions
Dimensions
Dimensions
North American Straight Blade, Type KI
North American Straight Blade, Type LI
North American Flat Single Hole, Type TTI
POWR-GARD® Fuse Datasheet
Special Purpose
©June 2011 Littelfusewww.littelfuse.com 4
SQUARE BODY SEMICONDUCTOR FUSES
700/1300 VAC • Very Fast-Acting • 63-2500 Amperes
BODY
SIZE
AMPERE
RATING
RATED
VOLTAGE
MELTING I2T
(A2S X 103)
TOTAL I2T
@ RATED
VOLTAGE
(A2S X 103)
*WATTS LOSS @
RATED CURRENT
(W)
LONG BL ADE
CATALOG NUMBER
TYPE LI/LLI
TAPPED TERMINAL
CATALOG NUMBER
TYPE T TI
70
63 1300 0.21 1.8 26 LA130URD70LI0063 LA130URD70TTI0063
80 1300 0.47 427 LA130URD70LI0080 LA130URD70TTI0080
100 1300 0.83 7.2 30 LA130URD70LI0100 L A130URD70TTI0100
125 1300 1.3 11 38 LA130URD70LI0125 LA130URD70TTI0125
160 1300 2.5 22 45 LA130URD70LI0160 LA130URD70TTI0160
200 1300 4.7 40 54 ⁄ 56 LA130URD70LI0200 LA130URD70TTI0200
250 1300 9.6 82 58 ⁄ 61 LA130URD70LI0250 LA130URD70TTI0250
315 1300 20 172 66 ⁄ 72 LA130URD70LI0315 LA130URD70T TI0315
350 1200 28 205 68 ⁄ 75 LA120URD70LI0350 LA120URD70TTI0350
71
160 1300 2.6 22 46 LA130URD71IL0160 LA130URDT1TTI0160
200 1300 4.7 40 54 LA130URD71LLI0200 LA130URD71TTI0200
250 1300 8.9 76 61 LA130URD71LLI0250 LA130URD71TTI0250
280 1300 12 102 68 ⁄ 70 LA130URD71IL0280 LA130URD71TTI0280
315 1300 16 138 73 ⁄ 76 LA130URD71LLI0315 LA130URD71TTI0315
350 1300 22 190 76 ⁄ 80 LA130URD71LLI0350 LA130URD71TTI0350
400 1300 38 330 76 ⁄ 80 LA130URD71LLI0400 LA130URD71TTI0400
450 1300 47 405 87 ⁄ 95 LA130URD71LLI0450 LA130URD71TTI0450
500 1200 68 500 90 ⁄ 100 LA120URD71LLI0500 LA120URD71TTI0500
550 1200 84 620 98 ⁄ 112 LA120URD71LLI0550 LA120URD71TTI0550
630 1100 125 930 105 LA110URD71LLI0630 –
630 1200 125 930 120 –LA120URD71TTI0630
72
280 1300 10 90 72 LA130URD72LI0280 LA130URD72TTI0280
315 1300 15 130 76 LA130URD72LI0315 LA130URD72TTI0315
350 1300 21 180 77 LA130URD72LI0350 LA130URD72TTI0350
400 1300 32 285 80 LA130URD72LI0400 LA130URD72TTI0400
450 1300 44 380 87 ⁄ 89 LA130URD72LI0450 LA130URD72TTI0450
500 1300 57 500 94 ⁄ 98 LA130URD72LI0500 LA130URD72TTI0500
550 1300 68 590 110 ⁄ 120 LA130URD72LI0550 LA130URD72TTI0550
630 1200 105 920 113 LA120URD72LI0630 –
630 1300 105 920 125 –LA130URD72TTI0630
700 1100 145 1040 122 LA110URD72LI0700 –
700 1200 145 1040 140 –LA120URD72TTI0700
800 1100 215 1590 125 LA110URD72LI0800 –
800 1200 215 1590 146 –LA120URD72TTI0800
73
315 1300 12 102 84 LA130URD73LI0315 LA130URD73T TI0315
350 1300 17 150 86 LA130URD73LI0350 LA130URD73TTI0350
400 1300 25 220 93 LA130URD73LI0400 LA130URD73TTI0400
450 1300 35 310 99 ⁄ 100 LA130URD73LI0450 LA130URD73TTI0450
500 1300 44 390 110 ⁄ 112 LA130URD73LI0500 LA130URD73TTI0500
550 1300 57 500 116 ⁄ 120 LA130URD73LI0550 LA130URD73TTI0550
630 1300 84 730 125 ⁄ 132 LA130URD73LI0630 LA130URD73TTI0630
700 1300 110 960 135 ⁄ 146 LA130URD73LI0700 LA130URD73TTI0700
800 1200 190 1630 136 LA120URD73LI0800 –
800 1300 190 1630 148 –LA130URD73TTI0800
900 1100 250 2160 150 LA110URD73LI0900 –
900 1000 250 2160 170 –LA100URD73TTI0900
1000 1000 370 2430 152 ⁄ 174 LA100URD73LI1000 LA100URD73TTI1000
1100 1000 445 2580 168 ⁄ 208 LA100URD73LI1100 LA100URD73TTI1100
1250 1000 585 3480 186 ⁄ 200 LA100URD73LI1250 LA100URD73TTI1250
1400 900 755 3880 210 ⁄ 228 LA090URD73LI1400 LA090URD73TTI1400
1600 700 1430 5630 203 LA070URD73LI1600 LA070URD73TTI1600
1800 660 2040 7600 206 LA065URD73LI1800 LA065URD73TTI1800
*Watts loss data is published for both blade and tapped style mounting configurations.
When two watts loss values are shown, this represents tapped/blade values respectively.
Contact Littelfuse for characteristic curves.
POWR-GARD® Fuse Datasheet
Special Purpose
©June 2011 Littelfusewww.littelfuse.com 5
SQUARE BODY SEMICONDUCTOR FUSES
700/1300 VAC • Very Fast-Acting • 63-2500 Amperes
Dimensions for reference only.
CATALOG NUMBER DIMENSIONS IN INCHES (mm)
A B C D E F G H J
LA130URD70LI (63-315)
LA120URD70LI (350)
1.57
(40)
0.98
(25)
0.49
(12.5)
0.83
(21)
0.71
(18)
3.60
(91.4)
5.13
(130.4)
6.00
(152.4)
0.41
(10.5)
LA130URD71LLI (160-450)
LA120URD71LLI (500-550)
LA110URD71LLI (630)
2.01
(51)
0.98
(25)
0.49
(12.5)
1.0
(26.5)
0.89
(22.5)
3.60
(91.4)
5.13
(130.4)
6.00
(152.4)
0.57
(14.6)
LA130URD72LI (280-550)
LA120URD72LI (800)
LA110URD72LI (700-800)
2.36
(60)
1.26
(32)
0.63
(16)
1.18
(30)
1.06
(27)
3.84
(97.6)
5.2
(132.4)
6.20
(157.4)
0.57
(14.6)
LA130URD73LI (315-700)
LA120URD73LI (800)
LA110URD73LI (900-1000)
LA090URD73LI (1400)
LA070URD73LI (1600)
LA065URD73LI (1800)
2.93
(74.5)
1.57
(40)
0.79
(20)
1.46
(37.2)
1.35
(34.2)
3.89
(98.8)
5.21
(132.4)
6.20
(157.4)
0.63
(15.9)
Dimensions for reference only.
CATALOG NUMBER DIMENSIONS IN INCHES (mm)
A B C
LA130URD70TTI (63-315)
LA120URD70TTI (350)
1.57
(40)
1.00
(26.4)
5⁄16-18 x 0.23 DP
LA130URD71TTI (160-450)
LA120URD71TTI (550-630)
2.01
(51)
1.19
(30.2)
5⁄16-18 x 0.36 DP
LA130URD72TTI (280-630)
LA120URD72TTI (700-800)
2.36
(60)
1.50
(38.1)
3⁄8-18 x 0.36 DP
LA130URD73TTI (315-900)
LA120URD73TTI (1000)
LA110URD73TTI (1250)
LA090URD73TTI (1400)
LA070URD73TTI (1600)
LA065URD73TTI (1800)
2.93
(74.5)
1.81
(46)
1⁄2-18 x 0.36 DP
TYPES LI AND LLI
TYPE TTI
Dimensions
Dimensions
North American Flat Single Hole, Type TTI
North American Straight Blade, Types LI and LLI
