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General and Heavy Duty Safety Switches<br />

Revised on 02/28/19<br />

Knockout Diagrams<br />

Type 1 & 3R Enclosures<br />

SAFETY<br />

SWITCHES<br />

4<br />

60A NF LNF 3R Enclosures<br />

60A F Type 1 Enclosures<br />

S20<br />

Embossed .25 in.<br />

mounting holes<br />

(3 places)<br />

S21<br />

Embossed .25 in.<br />

mounting holes<br />

(3 places)<br />

2 0.25 dia. K.O's<br />

2 0.25 dia. K.O's<br />

2 K.O.'s for Conduit 0.5-0.75-1 in.<br />

5 K.O.'s for Conduit 0.5-0.75-1 in.<br />

60A F Type 3R Enclosures<br />

Removable<br />

plate covering<br />

HA Type<br />

Hub opening<br />

(Max. 1.25 Conduit)<br />

S22<br />

Embossed .25 in.<br />

mounting holes<br />

(3 places)<br />

2 0.25 dia. K.O's<br />

3 K.O.'s for Conduit 0.5-0.75-1 in.<br />

*For inches / millimeters conversion, multiply inches<br />

by 25.4.<br />

4-28<br />

Siemens Industry, Inc. SPEEDFAX Product Catalog

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