CutlerHammer I.B. 48020 Instructions for （CutlerHammer I.B. 48020条指令）.pdf

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CutlerHammer I.B. 48020 Instructions for （CutlerHammer I.B. 48020条指令）.pdf

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CutlerHammer I.B. 48020 Instructions for （CutlerHammer I.B. 48020条指令）

Cutler-Hammer I.B. 48020 Instructions for Mechanical Latch Attachment for Type SL Medium Voltage Vacuum Contactor Read and understand all instruction literature for the SL Contactor before performing any work on the contactor or the latch attachment. DESCRIPTION The SL Contactor in its standard configuration is a mag- netically held device. A mechanical latch attachment can be added to the standard SL that will maintain the contactor in the closed position when power is removed from the main operating coil. A separate unlatch coil must then be energized to allow the contactor to open. The unlatch coil is intermittently rated. Control power should be applied to the coil only long enough to allow the contactor to open. Two normally open auxiliary contacts (wired in parallel) on the contactor should be u