General Purpose US Fuses
General Purpose US Fuses
GPUS57
American Power Fuses
One-Time
OT, OTN, OTS (Class K-5)
12/04
For versatility and economy, these
general purpose fuses are hard to beat
OT, OTN and OTS general purpose fuses provide low
cost protection for feeder and branch circuits
serving lighting, heating, and other non-motor loads
OT, OTN and OTS fuses will safely interrupt available
short circuit currents up to 50,000 amperes
in all ratings.
OT, OTN and OTS fuses are not rejection fuses – care
should be taken to ensure that replacement fuses do
not have lower interrupting ratings than original fuses.
OTN 15 through 60 satisfy the Canadian electrical code
requirement for Type “P,” low melting-point,
non-time delay fuses.
Features/Benefits
• Easy to read imprint label for quick recognition and
replacement
• Low cost for high protection value
Ratings
OTAC: 1 to 600A 250VAC,
50kA I.R.
DC: 1 to 600A 250VDC,
20kA I.R.
OTN (Canada)
AC: 15 to 60A
250VAC, 50kA I.R.
OTS
AC: 1 to 600A 600VAC,
50kA I.R.
DC: 1 to 600A 300VDC,
20kA I.R.
Highlights
• Versatile
• Lowest cost protection for circuits
serving non-inductive loads
Applications
• Feeders
• Branch Circuits
• Resistive Heating
• Residential and Small
Commercial Installations
Approvals
• UL Listed to Standard 248-9
• CSA Certified toStandard C22.2
No. 248.9*
• DC Tested to UL Standard 198L
* The Canadian Electrical Code requires these
fuses in ratings 15 through 60A to be of the
low melting point design use OTN 15-60.
General Purpose US Fuses
General Purpose US Fuses
GPUS58
American Power Fuses
One-Time
OT, OTN, OTS (Class K-5)
12/04
Ampere Catalog Number Reference Number Ampere Catalog Number Reference Number
Rating 250V 600V 250V 600V Rating 250V 600V 250V 600V
1 OT1 OTS1 H218277 D215720 65 OT65 OTS65 V201889 -
2 OT2 OTS2 Y222523 L218280 70 OT70 OTS70 T211111 A222525
3 OT3 OTS3 K201374 M219845 75 OT75 OTS75 H211630 R223046
4 OT4 OTS4 Q212143 Y200834 80 OT80 OTS80 P212142 X200833
5 OT5 OTS5 W214701 Y211115 90 OT90 OTS90 G212664 M201376
6 OT6 OTS6 H216230 T212146 100 OT100 OTS100 Y215209 T213181
7 OT7 OTS7 Z217763 R223506 110 OT110 OTS110 Z215716 L213680
8 OT8 OTS8 J218278 W213183 125 OT125 OTS125 F216228 S214192
10 OT10 OTS10 X218796 K216232 150 OT150 OTS150 D216732 X214702
12 OT12 OTS12 H219312 H216736 175 OT175 OTS175 S217251 B215212
15 OT15 OTS15 J219842 X217255 200 OT200 OTS200 X217761 C215719
20 OT20 OTS20 P223044 Z218798 225 OT225 OTS225 G218276 J216231
25 OT25 OTS25 V200831 L219315 250 OT250 OTS250 W218795 G216735
30 OT30 OTS30 W201890 B222526 300 OT300 OTS300 G219311 W217254
35 OT35 OTS35 J211631 S223047 350 OT350 OTS350 H219841 A217764
40 OT40 OTS40 H212665 N201377 400 OT400 OTS400 X222522 K218279
45 OT45 OTS45 K213679 Z201893 450 OT450 OTS450 N223043 Y218797
50 OT50 OTS50 A215211 M211634 500 OT500 OTS500 T200830 K219314
60 OT60 OTS60 F216734 L212668 600 OT600 OTS600 J201373 L219844
Standard Fuse Ampere Ratings
Recommended Fuse Blocks With Box
Connectors For One-Time Class K-5 Fuses
61-600A
0-60A
Fuse Catalog Number Ref.Number
Ampere 250 V 250 V
Rating 1 Pole 3 Pole 1 Pole 3 Pole
0-30 20306 20308 Z212381 F215446
31-60 20606 20608 N211865 C214431
61-100 21036 21038 S201105 Q211867
101-200 22001 22003 Y213415 E214433
201-400 24001 24003 T219046 -
401-600 2631 2633 F214434 K215450
Fuse Catalog Number Ref.Number
Ampere 600 V 600 V
Rating 1 Pole 3 Pole 1 Pole 3 Pole
0-30 60306 60308 V211871 X213920
31-60 60606 60608 X211873 Z213922
61-100 61036 61038 K201627 S211363
101-200 62001 62003 M212393 H213424
201-400 64001 64003 H218530 T219575
401-600 6631 6633 Z216475 W217507
Ampere A B C D E
Rating In. mm In. mm In. mm In. mm In. mm
0-30 2 51 9/16 14 - - - - - -
31-60 3 76 13/16 21 - - - - - -
61-100 5-7/8 149 1-1/16 27 1/8 3 3/4 19 1 25
101-200 7-1/8 181 1-9/16 40 3/16 5 1-1/8 28 1-3/8 35
201-400 8-5/8 219 2-1/16 53 1/4 6 1-5/8 41 1-7/8 48
401-600 10-3/8 264 2-9/16 66 1/4 6 2 51 2-1/4 57
0-30 5 127 13/16 21 - - - - - -
31-60 5-1/2 139 1-1/16 27 - - - - - -
61-100 7-7/8 200 1-5/16 34 1/8 3 3/4 19 1 25
101-200 9-5/8 244 1-13/16 46 3/16 5 1-1/8 28 1-3/8 35
201-400 11-5/8 295 2-9/16 66 1/4 6 1-5/8 41 1-7/8 48
401-600 13-3/8 340 3-1/8 80 1/4 6 2 51 2-1/4 57
A variety of pole configurations
and termination provisions is
available. Refer to the fuse block
section of this catalog for details.
Dimensions
250V-OT, OTN FUSES
600V-OTS FUSES
OTN 15 to 60A: consult us.
General Purpose US Fuses
General Purpose US Fuses
GPUS59
American Power Fuses
One-Time
OT, OTN, OTS (Class K-5)
12/04
MAXIMUM INSTANTANEOUS PEAK
LET-THRU AMPERES
AVAILABLE CURRENT IN RMS SYMMETRICAL AMPERES
Peak Let-Thru Current Data – OT, OTN & OTS 30 to 600,
250 and 600 Volts AC
TIME IN SECONDS
CURRENT IN AMPERES
ACURRENT IN AMPERES
TIME IN SECONDS
MELTING TIME – CURRENT DATA, 250V FUSES
OT 30 to 600; OTN 30, 60
OTS 30 to 600
MELTING TIME – CURRENT DATA, 600V FUSES
