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Approvals & Standards

  • All UL switches meet the requirements of UL and CSA
  • UL listed guide WHTY, File E191605 for UL 98 (ratings from 30 A to 1200 A)
  • IEC 60947-3

Key features & benefits

Mersen disconnect switches are extremely durable and versatile. These heavy-duty switches are designed with the most up-to-date disconnect switch technology available. Designed to suit the UL98 standard, the switch gives you a product that makes and breaks power circuits on load. The switches are tested and approved for use in demanding applications, such as Service Entrance.

More specifications


  • Service entrance or main panel disconnects
  • “Make and break” power circuit applications on load
  • Electrical isolation
  • Safety switch

Product Specifications

Item Number


Item Description (ERP)

UL98 Switch 400A 3p  

Short Description

UL98 Non-Fused Disconnect 600V 400A 3 Pole 3-0 Pole Configuration  



Rated voltage AC UL

600   V

Rated voltage DC UL

250   V

Ampere Rating

400   A

ROHS Compliant


Short Circuit Current Rating (SCCR)

Up to 200 kA with fuses  

Short Circuit Rating (Class J)

100 kA at 600A   kA

Number of Poles


Connection/Terminal Material

Silver-Plated Copper  

Connection/Terminal Type


Max Horsepower Rating/FLA

3-Phase: 240V 125HP, 480V 250HP, 600V 350HP  

Test Feature


Rated Insulation Voltage

1000   V

Installation Mounting

Direct Screw Mount  

Product Weight

6.73   lb

Product Width

8.7   in

Product Length

8.66   in

Product Height

3.35   in

Sell Pack Quantity

1   Each

Sell Pack Weight

7.07   lb

Sell Pack Width

9.45   in

Sell Pack Length

4.72   in

Sell Pack Height

10.63   in