Littelfuse.com/PSR
© 2021 Littelfuse, Inc.
Rev: 081621
1 of 21
POWR-SPEE D
®
Fuse
PSR SERIES HIGH-SPEED SQUARE BODY
Specications
Voltage Range Ac: 550 V–1300 V
Dc: 500 V–1000 V
Amperage Range 40 A–2000 A
Interrupting Range Ac: 100 kA–200 kA
Dc: 150 kA
Time Constant 10 ms at IR
Microswitch Yes
Mounting Flush-end style
Material Body: ceramic
Contacts: plated brass
Approvals UL 248-13 Recognized (File: E71611)
cURus (File: E71611)
CCC*
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-SPEED PSR series products offer
optimized circuit protection at the extremely fast speed
required to protect modern day power conversion devices.
Such products are commonly found in numerous applications
including pulp and paper industries, cranes and heavy-lifting
equipment, processing industries, wastewater treatment
plants, and various large factories and MRO facilities.
Features/Benets
Best in class dc performance
Extremely current limiting
Superior cycling capability
Global certication cURus, CCC*
Direct bus-bar mount design
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, rectiers, 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 • Flush End • 40 A–2000 A
S
SERIES
CASE
SIZE
TERMINATION AMPERAGE
CATALOG
NUMBER
ORDERING
PART NUMBER
PSR 030 FL 0550 PSR030FL0550 PSR030FL0550Z
Ordering Part Number
Catalog Number
PSR 030 FL 0550 Z
Termination
FL - Flush end metric thread
FS - Flush end inches thread
Case Size
30, 31, 32, 33, 70, 71, 72,73
Amperage
Series
Packing Quantity
Z = (2–3 pcs/box)
Recommended Accessories
Microswitch: MS3H1000C (case size 30 to 33)
MS7H1500C (case size 70 to 73)
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
© 2021 Littelfuse, Inc.
Rev: 081621
2 of 21
POWR-SPEED
®
Fuse
PSR SERIES HIGH-SPEED SQUARE BODY
Electrical Characteristics
CASE
SIZE
CATALOG NUMBER
AMPERAGE
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
FLUSH END
METRIC THREAD
FLUSH END
INCHES THREAD
AC
DC AC DC cURus CCC*
IEC UL AC DC
30
PSR030FL0040 PSR030FS0040 40 690 700 600 200 kA 150 kA 76 280 260 12 • •
PSR030FL0050 PSR030FS0050 50 690 700 600 200 kA 150 kA 110 598 384 15 • •
PSR030FL0063
PSR030FS0063
63
690
700
600
200 kA
150 kA
176
1023
640
20
•
•
PSR030FL0080 PSR030FS0080 80 690 700 600 200 kA 150 kA 304 1728 1252 24 • •
PSR030FL0100 PSR030FS0100 100 690 700 600 200 kA 150 kA 437 2835 1575 27 • •
PSR030FL0125
PSR030FS0125
125
690
700
600
200 kA
150 kA
707
4684
2783
36
•
•
PSR030FL0160 PSR030FS0160 160 690 700 600 200 kA 150 kA 1359 9114 5507 39 • •
PSR030FL0200 PSR030FS0200 200 690 700 600 200 kA 150 kA 3012 15169 14700 39 • •
PSR030FL0250
PSR030FS0250
250
690
700
600
200 kA
150 kA
4668
29952
20833
50
•
•
PSR030FL0315 PSR030FS0315 315 690 700 600 200 kA 150 kA 7131 61830 31600 61 • •
PSR030FL0350 PSR030FS0350 350 690 700 600 200 kA 150 kA 12007 85320 49273 62 • •
PSR030FL0400 PSR030FS0400 400 690 700 600 200 kA 150 kA 16209 114750 63367 75 • •
PSR030FL0450
PSR030FS0450
450
690
700
600
200 kA
150 kA
23133
160110
93533
75
•
•
PSR030FL0500 PSR030FS0500 500 690 700 600 200 kA 150 kA 31429 225180 137333 80 • •
PSR030FL0550 PSR030FS0550 550 690 700 600 200 kA 150 kA 44323 268920 145400 78 • •
PSR030FL0630
PSR030FS0630
630
690
700
550
200 kA
150 kA
57404
601780
267800
90
•
31
PSR031FL0200
PSR031FS0200
200
690
700
600
200 kA
150 kA
1965
17334
16188
49
•
•
PSR031FL0250 PSR031FS0250 250 690 700 600 200 kA 150 kA 3789 35343 21080 52 • •
PSR031FL0315 PSR031FS0315 315 690 700 600 200 kA 150 kA 6862 59130 30694 61 • •
PSR031FL0350
PSR031FS0350
350
690
700
600
200 kA
150 kA
9523
76140
40996
63
•
•
PSR031FL0400 PSR031FS0400 400 690 700 600 200 kA 150 kA 14770 124335 64359 64 • •
PSR031FL0450 PSR031FS0450 450 690 700 600 200 kA 150 kA 22457 178200 97444 69 • •
PSR031FL0500
PSR031FS0500
500
690
700
600
200 kA
150 kA
29751
251505
125935
81
•
•
PSR031FL0550 PSR031FS0550 550 690 700 600 200 kA 150 kA 42056 289170 171845 77 • •
PSR031FL0630 PSR031FS0630 630 690 700 600 200 kA 150 kA 73513 507465 276315 80 • •
PSR031FL0700 PSR031FS0700 700 690 700 600 200 kA 150 kA 98187 601425 337260 92 • •
PSR031FL0800
PSR031FS0800
800
690
700
600
200 kA
150 kA
137208
848880
502800
106
•
•
PSR031FL0900 PSR031FS0900 900 550 600 550 200 kA 150 kA 155163
1286200
631820 118 •
32
PSR032FL0400 PSR032FS0400 400 690 700 600 200 kA 150 kA 11104 79650 44533 82 • •
PSR032FL0450
PSR032FS0450
450
690
700
600
200 kA
150 kA
15535
116100
65463
88
•
•
PSR032FL0500 PSR032FS0500 500 690 700 600 200 kA 150 kA 21573 161460 88277 94 • •
PSR032FL0550 PSR032FS0550 550 690 700 600 200 kA 150 kA 26327 177660 107960 104 • •
PSR032FL0630 PSR032FS0630 630 690 700 600 200 kA 150 kA 34790 234900 156963 110 • •
PSR032FL0700
PSR032FS0700
700
690
700
600
200 kA
150 kA
51191
291870
209287
117
•
•
PSR032FL0800 PSR032FS0800 800 690 700 600 200 kA 150 kA 60125 472770 249000 145 • •
PSR032FL0900 PSR032FS0900 900 690 700 600 200 kA 150 kA 107785 764100 404000 145 • •
PSR032FL1000
PSR032FS1000
1000
690
700
600
200 kA
150 kA
190102
933120
672333
146
•
•
PSR032FL1100 PSR032FS1100 1100 690 700 600 200 kA 150 k A 225379 1247400 744000 149 • •
33
PSR033FL0450 PSR033FS0450 450 690 700 600 200 kA 150 kA 13600 106380 58947 99 • •
PSR033FL0500 PSR033FS0500 500 690 700 600 200 kA 150 kA 16434 140400 77846 107 • •
PSR033FL0550 PSR033FS0550 550 690 700 600 200 kA 150 kA 23314 187650 100461 108 • •
PSR033FL0630 PSR033FS0630 630 690 700 600 200 kA 150 kA 38727 285930 142437 113 • •
PSR033FL0700 PSR033FS0700 700 690 700 600 200 kA 150 kA 56763 392580 209863 113 • •
PSR033FL0800 PSR033FS0800 800 690 700 600 200 kA 150 kA 84691 575505 348500 120 • •
PSR033FL0900 PSR033FS0900 900 690 700 600 200 kA 150 kA 122619 740340 451177 122 • •
PSR033FL1000 PSR033FS1000 1000 690 700 600 200 kA 150 kA 222350 1170450 787750 124 • •
PSR033FL1100 PSR033FS1100 1100 690 700 600 200 kA 150 kA 310824 1568700 821400 127 • •
PSR033FL1250 PSR033FS1250 1250 690 700 600 200 kA 150 kA 476902 2403000 1674333 131 • •
PSR033FL1400 PSR033FS1400 1400 690 700 500 200 kA 150 kA 583552 2920050 1979750 144 • •
PSR033FL1500 PSR033FS1500 1500 600 650 500 200 kA 150 kA 674538 2433200 1996733 163 • •
PSR033FL1600 PSR033FS1600 1600 600 650 500 200 kA 150 kA 779948 2942800 2301633 182 • •
PSR033FL1800 PSR033FS1800 1800 600 650 500 200 kA 150 kA 952196 3785040 2724180 224 • •
PSR033FL2000 PSR033FS2000 2000 550 600 500 200 kA 150 kA 1234315 4131600 3755180 222 • •
*CCC Certification only on Flush End Metric Thread Version