Square D Digest 179

UL 98 IEC Style Disconnect Switches

LK4 Nonfusible and GS2 Fusible Disconnect Switches Refer to Catalog 9421CT0301

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8 OPERATING MECHANISMS AND DISCONNECT SWITCHES

LK4 and GS2 Disconnect Switches

Table 8.59: Building a Complete GS or LK Switch To build a complete GS or LK switch, order the following parts: Choose a Switch + Shaft +

+

Handle Assembly

Lugs if needed

600 A, LK4SU3N

Shaft 320 mm, GS2AE6

Black Handle, GS2AH150

Lugs Kit, GS1AW503

Example: LK4SU3N (600 A non-fusible switch) + GS2AE6 (320 mm Style D shaft) + GS2AH150 (black/black, locking) To add auxiliary contacts: For front-mounted contacts order LK4AD30N (front-mounted auxiliary contact holder) + GS2AM110 .

LK4 Nonfusible Disconnect Switches Table 8.60: LK Nonfusible IEC Style Disconnect Switches

Short Circuit Current Rating, 600 Vac

Maximum Horsepower Rating

Shaft Style

Rating (A)

Catalog No.

Pole

240 V 480 V 600 V 250 Vdc Fuse SCCR kA

3 3 3 3 3 3 3 3

30 LK4DU3CN 10

20 75

25

— J

100 LK4AE41- CN

100

LK4JU3N 30

100 200 350 350 500 500 500

15 15 50 50

J J J J

200 200 200 200 100 100 100

B B B D D D D

200 LK4MU3N 75 400 LK4QU3N 125 600 LK4SU3N 200 1000 LK4UU3N 200 1200 LK4WU3N 200 800 LK4TU3N 200

150 250 400 500 500 500

— L — L — L

100–400A

8-24

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