Skip to main content

All locations

Please select your country & language

China | 中国
Germany | Deutschland

Your country is not in the list?

Go to our international website:

Mersen EP International website
Contact us

Approvals & Standards

  • UL Listed to Standard 248-9 File E2137
  • CSA Certified to Standard C22.2 No. 248.9 (The Canadian Electrical Code requires these fuses in ratings 15 through 60A to be of the low melting point design; use OTN 15-60.)
  • Self-certified for DC per UL248

Key features & benefits

One-Time OT and OTN general purpose fuses provide low cost protection for feeder and branch-circuits serving lighting, heating, and other non-motor loads. OT and OTN fuses will safely interrupt available short-circuit currents up to 50,000 amperes in all ratings. OT and OTN fuses are not rejection fuses and care should be taken to ensure that replacement fuses do not have lower interrupting ratings than original fuses. OTN(15-60) satisfy the Canadian electrical code requirement for Type P low melting-point, non-time-delay fuses.

More specifications

Applications

  • Feeders
  • Branch circuits
  • Resistive heating
  • Residential and small commercial installations

Product Specifications

Frequency (Hz)

50/60   Hz

Ampere range

1 to 600 A  

Fuse class

Class K5  

Speed/Characteristic

Fast-Acting  

UL file number

File E2137  

UL Category Code

JDDZ  

CSA File number

Class 1421-01 Guide 012636_0  

REACH Compliant

Yes  

Max Operating Temp.

80   °C

Max Storage Temp.

80   °C

Min Storage Temp.

-25   °C

Harmonized System

853610  

References in this series  (47)

OT1

1   A

-

-

No

0.0181   kg

OT10

10   A

-

-

No

0.0181   kg

OT100

100   A

-

-

No

0.1179   kg

OT110

110   A

-

-

No

0.347   kg

OT12

12   A

-

-

No

0.0181   kg

OT125

125   A

-

-

No

0.347   kg

OT15

15   A

-

-

No

0.0181   kg

OT150

150   A

-

-

No

0.347   kg

OT175

175   A

-

-

No

0.347   kg

OT2

2   A

-

-

No

0.0181   kg

OT20

20   A

-

-

No

0.0181   kg

OT200

200   A

-

-

No

0.347   kg

OT225

225   A

-

-

No

0.6577   kg

OT25

25   A

-

-

No

0.0181   kg

OT250

250   A

-

-

No

0.6577   kg