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
Country / Language:  USA / English
Contact us

Approvals & Standards

 

  • UL listed to standard 248-8 File E2137
  • CSA certified to standard C22.2 no. 248.8
  • DC listed to UL 248
  • IEC 269-2-1

 

Key features & benefits

Amp-Trap fast-acting A4J fuses deliver excellent current-limiting protection to a wide variety of applications. Their unique dimensions prevent the substitution of other fuses with lower voltage ratings, interrupting ratings, or current-limiting capability.

More specifications

Applications

 

  • Capacitors
  • Load centers
  • Panelboards
  • Switchboards
  • Bus duct
  • Feeder circuits
  • Circuit breakers
  • Lighting, heating, and general loads

 

Product Specifications

Frequency (Hz)

50/60   Hz

Ampere Range

1 to 600 A  

Fuse Class

Class J  

Speed/Characteristic

Fast-Acting  

UL File Number

File E2137  

UL Category Code

JDDZ  

CSA File number

Class 1422-02 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  (34)

A4J1

1   A

-

-

No

0.12   lb

A4J10

10   A

-

-

No

0.12   lb

A4J100

100   A

-

-

No

0.24   lb

A4J110

110   A

-

-

No

0.8   lb

A4J110EI

110   A

-

-

Yes  

0.85   lb

A4J125

125   A

-

-

No

0.8   lb

A4J15

15   A

-

-

No

0.12   lb

A4J150

150   A

-

-

No

0.8   lb

A4J175

175   A

-

-

No

0.8   lb

A4J20

20   A

-

-

No

0.12   lb

A4J200

200   A

-

-

No

0.8   lb

A4J200EI

200   A

-

-

Yes  

0.85   lb

A4J225

225   A

-

-

No

1.75   lb

A4J25

25   A

-

-

No

0.12   lb

A4J250

250   A

-

-

No

1.75   lb