Littelfuse.com/PSR
© 2024 Littelfuse, Inc.
Rev: 021524
1 of 20
POWR-SPEED
®
Fuse
PSR SERIES HIGH-SPEED SQUARE BODY
Specications
Voltage Rating Ac: 450 V–1300 V
Dc: 450 V–1000 V
Amperage Rating 40 A–2250 A
Interrupting Rating Ac: 100 kA–200 kA
Dc: 150 kA
Time Constant 10 ms at IR
Microswitch Yes
Mounting DIN 43653 blade style
Material Body: ceramic
Contacts: plated copper
Approvals cURus Recognized (File: E71611)
CCC (Ac voltage) *
Applicable Standards UL248-13, IEC 60269-4 (Class aR)
Environmental RoHS Compliant, REACH
Operating Temperature -55 °C to +125 °C
Storage Temperature Up to +35 °C with relative humidity <65 %
Country of Origin Mexico
Description
Littelfuse PSR series high-speed square body fuses are
specially designed for protection of power semiconductor
devices such as diodes, triacs, IGBTs, SCRs, MOSFETs,
and other solid-state devices that are typically designed
into power conversion and power conditioning equipment.
Variable frequency drives, inverters, UPS, rectifiers, and
soft-starters are examples of typical equipment designed
with sensitive power semiconductor devices that cannot
withstand any line surge or overcurrent conditions and
require high-speed protection.
Littelfuse POWR-SPEE D
®
PSR series products offer
optimized circuit protection at the extremely fast speed
required to protect modern day power conversion devices.
Available in DIN43653 blade style termination with visual
blown fuse indication standard on all fuses and optional
micro-switch for external indication.
Features/Benets

Best in class dc performance

Extremely current limiting

Superior cycling capability

Global certication cURus, CCC*, IEC

Visual and optional microswitch fuse blown indication

Low watt-loss design

Compliance with US and Canadian requirements

Fast-acting Class aR performance
Applications

Power conversion devices (UPS, inverter,
rectiers, drives)

Dc systems (dc common bus, dc injection braking)

Battery protection application (energy storage systems)

Electric vehicle charging stations

Heaters and power supplies
Semiconductor Fuses • DIN 43653 Blade • 40 A—2250 A
S
Ordering Part Number
PSR 030 DS 0550 Z
Termination
DS = DIN 80 mm xing
DL = DIN 110 mm xing
Case Size
30, 31, 32, 33, 70, 71, 72, 73
Amperage
Series
Packing Quantity
X = (1 pc/box)
Z = (3 pcs/box)
SERIES
CASE
SIZE
TERMINATION AMPERAGE
CATALOG
NUMBER
ORDERING
PART NUMBER
PSR 030 DS 0550 PSR030DS0550 PSR030DS0550Z
Catalog Number
Recommended Accessories
Microswitch: MS3H1000C (Case Size 30 to 33)
MS7H1500C (Case Size 70 to 73)
Fuseblock: LSCR series
Web Resources
Download technical documents: Littelfuse.com/PSR
Note: high-speed fuses are designed for xed installations. They are not
intended for use in moving vehicle applications.
* Refer to CCC section of Electrical Characteristics table
Littelfuse.com/PSR
© 2024 Littelfuse, Inc.
Rev: 021524
2 of 20
POWR-SPEED
®
Fuse
PSR SERIES HIGH-SPEED SQUARE BODY
Electrical Characteristics
CASE
SIZE
CATALOG NUMBER
AMPERE
RATING (A)
VOLTAGE
RATING (V)
INTERRUPTING
RATING
MELTING
(PRE-ARC)
I
2
T (A
2
S)
TOTAL CLEARING
I
2
T (A
2
S) AT
RATED VOLTAGE
WATT LOSS
AT 100 %
RATED
CURRENT (W)
AGENCY
CERTIFICATION
DIN 80 MM
FIXING (DS)
DIN 110 MM
FIXING (DL)
AC
DC AC DC AC DC cURus CCC
IEC UL
30
PSR030DS0040 PSR030DL0040 40 690 700 600 200 kA 150 kA 76 280 260 13 • •
PSR030DS0050 PSR030DL0050 50 690 700 600 200 kA 150 kA 110 598 384 16 • •
PSR030DS0063 PSR030DL0063 63 690 700 600 200 kA 150 kA 176 1023 640 20 • •
PSR030DS0080 PSR030DL0080 80 690 700 600 200 kA 150 kA 304 1728 1252 24 • •
PSR030DS0100 PSR030DL0100 100 690 700 600 200 kA 150 kA 437 2835 1575 28 • •
PSR030DS0125 PSR030DL0125 125 690 700 600 200 kA 150 kA 707 4684 2783 37 • •
PSR030DS0160 PSR030DL0160 160 690 700 600 200 kA 150 kA 1359 9114 5507 40 • •
PSR030DS0200 PSR030DL0200 200 690 700 600 200 kA 150 kA 3012 15169 14700 40 • •
PSR030DS0250 PSR030DL0250 250 690 700 600 200 kA 150 k A 4668 29952 20833 52 • •
PSR030DS0315 PSR030DL0315 315 690 700 600 200 kA 150 kA 7131 61830 31600 64 • •
PSR030DS0350 PSR030DL0350 350 690 700 600 200 kA 150 kA 12007 85320 49273 66 • •
PSR030DS0400 PSR030DL0400 400 690 700 600 200 kA 150 kA 16209 114750 63367 78 • •
PSR030DS0450 PSR030DL0450 450 690 700 600 200 kA 150 kA 23133 160110 93533 80 • •
PSR030DS0500 PSR030DL0500 500 690 700 600 200 kA 150 kA 31429 225180 137333 84 • •
PSR030DS0550 PSR030DL0550 550 690 700 600 200 kA 150 kA 44323 268920 145400 85 • •
PSR030DS0630 PSR030DL0630 630 690 700 550 200 kA 150 kA 57404 480010 267800 91 •
31
PSR031DS0200 PSR031DL0200 200 690 700 600 200 kA 150 kA 1965 17334 16188 49 • •
PSR031DS0250 PSR031DL0250 250 690 700 600 200 kA 150 kA 3789 35343 21080 52 • •
PSR031DS0315 PSR031DL0315 315 690 700 600 200 kA 150 kA 6862 59130 30694 63 • •
PSR031DS0350 PSR031DL0350 350 690 700 600 200 kA 150 kA 9523 76140 40996 67 • •
PSR031DS0400 PSR031DL0400 400 690 700 600 200 kA 150 kA 14770 124335 64359 70 • •
PSR031DS0450 PSR031DL0450 450 690 700 600 200 kA 150 kA 22457 178200 97444 70 • •
PSR031DS0500 PSR031DL0500 500 690 700 600 200 kA 150 kA 29751 251505 125935 74 • •
PSR031DS0550 PSR031DL0550 550 690 700 600 200 kA 150 kA 42056 289170 171845 86 • •
PSR031DS0630 PSR031DL0630 630 690 700 600 200 kA 150 k A 73513 507465 276315 87 • •
PSR031DS0700 PSR031DL0700 700 690 700 600 200 kA 150 kA 98187 601425 337260 93 • •
PSR031DS0800 PSR031DL0800 800 690 700 600 200 kA 150 kA 137208 848880 502815 107 • •
PSR031DS0900 PSR031DL0900 900 550 600 550 200 kA 150 kA 155163 945100 631820 126 •
32
PSR032DS0400 PSR032DL0400 400 690 700 600 200 kA 150 kA 11104 79650 44533 87 • •
PSR032DS0450 PSR032DL0450 450 690 700 600 200 kA 150 kA 15535 116100 65463 88 • •
PSR032DS0500 PSR032DL0500 500 690 700 600 200 kA 150 kA 21573 161460 88277 94 • •
PSR032DS0550 PSR032DL0550 550 690 700 600 200 kA 150 kA 26327 177660 107960 106 ��� •
PSR032DS0630 PSR032DL0630 630 690 700 600 200 kA 150 kA 34790 234900 156963 114 • •
PSR032DS0700 PSR032DL0700 700 690 700 600 200 kA 150 k A 51191 291870 209287 127 • •
PSR032DS0800 PSR032DL0800 800 690 700 600 200 kA 150 kA 60125 472770 249000 152 • •
PSR032DS0900 PSR032DL0900 900 690 700 600 200 kA 150 kA 107785 764100 404000 145 • •
PSR032DS1000 PSR032DL1000 1000 690 700 600 200 kA 150 kA 190102 933120 672333 149 • •
PSR032DS1100 PSR032DL1100 1100 690 700 600 200 kA 150 kA 225379 1247400 744000 161 • •
PSR032DS1250 PSR032DL1250 1250 550 500* 450* 200 kA 150 kA 336661 1114994 1197000 166 •
PSR032DS1400 PSR032DL1400 1400 450 500 450 200 kA 150 kA 551749 1611639 1865400 184 •
PSR032DS1500 PSR032DL1500 1500 450 500 450 200 kA 150 kA 673360 2045907 1735500 192 •
33
PSR033DS0450 PSR033DL0450 450 690 700 600 200 kA 150 kA 13600 106380 58947 107 • •
PSR033DS0500 PSR033DL0500 500 690 700 600 200 kA 150 kA 16434 140400 77846 107 • •
PSR033DS0550 PSR033DL0550 550 690 700 600 200 kA 150 kA 23314 187650 100461 111 • •
PSR033DS0630 PSR033DL0630 630 690 700 600 200 kA 150 k A 38727 285930 142437 120 • •
PSR033DS0700 PSR033DL0700 700 690 700 600 200 kA 150 kA 56763 392580 209863 116 • •
PSR033DS0800 PSR033DL0800 800 690 700 600 200 kA 150 kA 84691 575505 348500 122 • •
PSR033DS0900 PSR033DL0900 900 690 700 600 200 kA 150 kA 122619 740340 451177 138 • •
PSR033DS1000 PSR033DL1000 1000 690 700 600 200 kA 150 kA 222350 1170450 787750 138 • •
PSR033DS1100 PSR033DL1100 1100 690 700 600 200 kA 150 kA 310824 1568700 821400 138 • •
PSR033DS1250 PSR033DL1250 1250 690 700 500 200 kA 150 kA 476902 2403000 1674333 145 • •
PSR033DS1400 PSR033DL1400 1400 690 700 500 200 kA 150 k A 583552 2920050 1979750 173 • •
PSR033DS1500 PSR033DL1500 1500 600 650 500 200 kA 150 kA 674538 2433200 1996733 182 • •
PSR033DS1600 PSR033DL1600 1600 600 650 500 200 kA 150 kA 779948 2942800 2301633 208 • •
PSR033DS1800 PSR033DL1800 1800 600 650 500 200 kA 150 kA 952196 3785040 2724180 260 • •
PSR033DS2000 PSR033DL2000 2000 550 600 480 200 kA 150 kA 1234315 4131600 3755180 264 • •
PSR033DS2250 PSR033DL2250 2250 500 550 450 200 kA 150 kA 1236000 4459651 3859500 349 •
* PSR032 1250 A: 600 V Ac/550 V Dc