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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 R  

Short Circuit Current Rating (SCCR)

200  

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 serie  (48)

Item number - Catalog No.

Ampere rating

Fuse size

Fuse Type/Class

Number of poles

Indication System

Product weight

20305R

30   A

-

Class R  

Adder  

-

0.0454   kg

20306R

30   A

-

Class R  

1-pole  

-

0.0635   kg

20307R

30   A

-

Class R  

2-pole  

-

0.1089   kg

20308R

30   A

-

Class R  

3-pole  

-

0.1542   kg

20315R

30   A

-

Class R  

Adder  

-

0.0454   kg

20316R

30   A

-

Class R  

1-pole  

-

0.0635   kg

20317R

30   A

-

Class R  

2-pole  

-

0.1089   kg

20318R

30   A

-

Class R  

3-pole  

-

0.1542   kg

20325R

30   A

-

Class R  

Adder  

-

0.0454   kg

20326R

30   A

-

Class R  

1-pole  

-

0.0635   kg

20327R

30   A

-

Class R  

2-pole  

-

0.1089   kg

20328R

30   A

-

Class R  

3-pole  

-

0.1542   kg

20355R

30   A

-

Class R  

Adder  

-

0.0454   kg

20356R

30   A

-

Class R  

1-pole  

-

0.0635   kg

20357R

30   A

-

Class R  

2-pole  

-

0.1089   kg