Skip to main content

Class R Fuse Blocks - 250V

The Class R Fuse Blocks - 250V is part of the Mersen (formerly Ferraz Shawmut) fuse holders & blocks line, distributed by Gross Automation.

Class R Fuse Blocks - 250V

Ferraz Shawmut Class R Fuse Blocks accommodate all Class R 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 multi-pole segmented blocks of as many poles as desired. All fuse clips are made of high conductivity tin-plated copper, with a choice of spring reinforced or non-spring reinforced clips in 30A and 60A. Clips 100A and above are spring reinforced.

Specifications

SpecificationValue
RatingsAC: 250VAC: 30A, 60A, 100A, 200A, 400A, 600A, Withstand ratings: 200kA; All fuse blocks meet the requirements of UL Std. 512; UL Listed, Guide IZLT, File E52283; UL Recognized Component, Guide IZLT2, File E52283; CSA Certified Class 6225, File 32169; RoHS Compliant

Ratings

  • AC: 250VAC: 30A, 60A, 100A, 200A, 400A, 600A, Withstand ratings: 200kA
  • All fuse blocks meet the requirements of UL Std. 512
  • UL Listed, Guide IZLT, File E52283
  • UL Recognized Component, Guide IZLT2, File E52283
  • CSA Certified Class 6225, File 32169
  • RoHS Compliant

Catalog Numbers

250 Volt Class R Fuse Blocks, 30 to 600 Ampere

AmpsInsulatorPolesConnector TypeWire RangeCatalog Number (Class R, Spring Reinforced Clips)Notes
30GFPCAdderBoxAl/Cu #2-1420305R+
30GFPC1BoxAl/Cu #2-1420306R+1-pole, 30A block does not accept adder pole
30GFPC2BoxAl/Cu #2-1420307R+
30GFPC3BoxAl/Cu #2-1420308R+
30GFPCAdderScrewCu #10-1420315R+
30GFPC1ScrewCu #10-1420316R+1-pole, 30A block does not accept adder pole
30GFPC2ScrewCu #10-1420317R+
30GFPC3ScrewCu #10-1420318R+
30GFPCAdderPressure plateCu #10-1420325R+
30GFPC1Pressure plateCu #10-1420326R+1-pole, 30A block does not accept adder pole
30GFPC2Pressure plateCu #10-1420327R+
30GFPC3Pressure plateCu #10-1420328R+
30GFPCAdderBoxCu #4-1420355R+copper box connectors and clips, for copper wires only
30GFPC1BoxCu #4-1420356R+1-pole, 30A block does not accept adder pole; copper box connectors and clips, for copper wires only
30GFPC2BoxCu #4-1420357R+copper box connectors and clips, for copper wires only
30GFPC3BoxCu #4-1420358R+copper box connectors and clips, for copper wires only
60GFPCAdderBoxAl/Cu #2-1420605R+
60GFPC1BoxAl/Cu #2-1420606R+
60GFPC2BoxAl/Cu #2-1420607R+
60GFPC3BoxAl/Cu #2-1420608R+
60GFPCAdderBoxCu #4-1420655R+copper box connectors and clips, for copper wires only
60GFPC1BoxCu #4-1420656R+copper box connectors and clips, for copper wires only
60GFPC2BoxCu #4-1420657R+copper box connectors and clips, for copper wires only
60GFPC3BoxCu #4-1420658R+copper box connectors and clips, for copper wires only
100GFPCAdderBoxAl/Cu 2/0-#621035R+
100GFPC1BoxAl/Cu 2/0-#621036R+
100GFPC2BoxAl/Cu 2/0-#621037R+
100GFPC3BoxAl/Cu 2/0-#621038R+
100GFPCAdderBoxCu 2/0-#1221005R+copper box connectors and clips, for copper wires only
100GFPC1BoxCu 2/0-#1221006R+copper box connectors and clips, for copper wires only
100GFPC2BoxCu 2/0-#1221007R+copper box connectors and clips, for copper wires only
100GFPC3BoxCu 2/0-#1221008R+copper box connectors and clips, for copper wires only
200Phenolic1Box, side-clipAl/Cu 350kcmil-#622001R+
200Phenolic3Box, side-clipAl/Cu 350kcmil-#622003R+
200Phenolic1Box, side-clipCu 350kcmil-#622051R+copper box connectors and clips, for copper wires only
200Phenolic3Box, side-clipCu 350kcmil-#622053R+copper box connectors and clips, for copper wires only
400Phenolic1Box, side-clipAl/Cu 1000-250kcmil24001R+Not UL Listed or CSA Certified
400Phenolic3Box, side-clipAl/Cu 1000-250kcmil24003R+Not UL Listed or CSA Certified
400Phenolic1Box, side-clipCu 1000-250kcmil24051R+Not UL Listed or CSA Certified; copper box connectors and clips, for copper wires only
400Phenolic3Box, side-clipCu 1000-250kcmil24053R+Not UL Listed or CSA Certified; copper box connectors and clips, for copper wires only
400Phenolic1Box, in-line clipAl/Cu (2) 350kcmil-#424031R+
400Phenolic3Box, in-line clipAl/Cu (2) 350kcmil-#424033R+
400Phenolic1Box, in-line clipCu (2) 350kcmil-#624061R+copper box connectors and clips, for copper wires only
400Phenolic3Box, in-line clipCu (2) 350kcmil-#624063R+copper box connectors and clips, for copper wires only
600Phenolic1Box, in-line clipAl/Cu (2) 500kcmil-#42631R+
600Phenolic3Box, in-line clipAl/Cu (2) 500kcmil-#42633R+
600Phenolic1Box, in-line clipCu (2) 500kcmil-#42661R+copper box connectors and clips, for copper wires only
600Phenolic3Box, in-line clipCu (2) 500kcmil-#42663R+copper box connectors and clips, for copper wires only

Accessories

Catalog NumberDescription
U09322+End barrier, to convert 30A adder pole to single pole
U09365+End barrier, to convert 60A adder pole to single pole
U09363+End barrier, to convert 100A adder pole to single pole

Documentation

Breakers and distribution blocks for a panel? Our UL 508A shop builds power distribution panels to order.