ABB OTM C Series - Introduction; Use of Symbols

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MOTORIZED CHANGE-OVER AND TRANSFER SWITCHES, OTM_C
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1. Introduction
This manual describes the installation and the basic operation of the motorized change-over and trans-
fer switches, types OTM_C. The instructive part is followed by a section on available accessories.
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1.1 Use of symbols
OTM_C: Motorized change-over switch, the type name
OME_: Motor operator, the type name
OT_C: Change-over switch, the type name
OZXB_ and OZXA_: Terminal clamp sets, the type name, accessories
OTZC_: Bridging bars, the type name, accessories
OTS_: Terminal shrouds, the type name, accessories
OA_: Auxiliary contacts, the type name, accessories
ODPS_: Dual power source, the type name, accessories
Caution: provides important information or warns about a situation that may have a
detrimental effect on equipment.
General warning: warns about a situation where something other than electrical
equipment may cause physical injury to a person or damage to equipment.
Hazardous voltage: warns about a situation where a hazardous voltage may cause physical
injury to a person or damage to equipment.
Information: provides important information about the equipment.
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1.2 Explanations of abbreviations and terms