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Approvals & Standards

  • All fuse blocks meet the requirements of UL 4248
  • UL listed, guide IZLT, File E52283
  • UL recognized component guide IZLT2, file E52283
  • CSA certified class 6225, File 32169

Key features & benefits

Mersen Class H, K and R fuse blocks accommodate all Class H, K and R 250 and 600V power fuses. A choice of screw, pressure plate, box and special order stud connectors fit a wide range of stranded or solid copper or aluminum wire. Insulators are either molded glass-filled polycarbonate (GFPC) or phenolic with verified dielectric strength in excess of 2500V. 30, 60 and 100A fuse blocks feature a unique adder block which can be snapped onto 1-, 2- or 3-pole blocks to form multipole segmented blocks of as many poles as desired.
All fuse clips are made of high conductivity tinplated copper, with a choice of spring reinforced or nonspring reinforced clips in 30A and 60A. Clips 100A and above are spring reinforced.

More specifications

Product Specifications

Frequency (Hz)

50/60   Hz

Ampere Range

0 to 600 A  

Fuse Class

Class H/K  

Short Circuit Current Rating (SCCR)

50  

Flammability Rating

94 V-0  

UL File Number

File E52283  

UL Category Code

IZLT  

CSA File number

Class 6225, File 032169_0_000  

REACH Compliant

Yes  

Max Operating Temp.

80   °C

Max Storage Temp.

80   °C

Min Storage Temp.

-25   °C

Harmonized System

853690  

References in this series  (64)

20318

30   A

-

Class H/K  

3-pole  

No

0.34   lb

20320

30   A

-

Class H/K  

Adder  

No

0.1   lb

20321

30   A

-

Class H/K  

1-pole  

No

0.14   lb

20322

30   A

-

Class H/K  

2-pole  

No

0.24   lb

20323

30   A

-

Class H/K  

3-pole  

No

0.34   lb

20325

30   A

-

Class H/K  

Adder  

No

0.1   lb

20326

30   A

-

Class H/K  

1-pole  

No

0.14   lb

20327

30   A

-

Class H/K  

2-pole  

No

0.24   lb

20328

30   A

-

Class H/K  

3-pole  

No

0.34   lb

20355

30   A

-

Class H/K  

Adder  

No

0.1   lb

20356

30   A

-

Class H/K  

1-pole  

No

0.14   lb

20357

30   A

-

Class H/K  

2-pole  

No

0.24   lb

20358

30   A

-

Class H/K  

3-pole  

No

0.34   lb

20600

60   A

-

Class H/K  

Adder  

No

0.2   lb

20601

60   A

-

Class H/K  

1-pole  

No

0.25   lb