#### 7.2.2.3 IfcSwitchingDeviceTypeEnum

The IfcSwitchingDeviceTypeEnum defines the range of different types of switch that can be specified.

> HISTORY New type in IFC2x2.

Enumerated Item Definitions:

- CONTACTOR: An electrical device used to control the flow of power in a circuit on or off.
- DIMMERSWITCH: A dimmer switch has variable positions, and may adjust electrical power or other setting (according to the switched port type).
- EMERGENCYSTOP: An emergency stop device acts to remove as quickly as possible any danger that may have arisen unexpectedly.
- KEYPAD: A set of buttons or switches, each potentially applicable to a different device.
- MOMENTARYSWITCH: A momentary switch has no position, and may trigger some action to occur.
- SELECTORSWITCH: A selector switch has multiple positions, and may switch connectivity or other setting.
- STARTER: A starter is a switch which in the closed position controls the application of power to an electrical device.
- SWITCHDISCONNECTOR: A switch disconnector is a switch which in the open position satisfies the isolating requirements specified for a disconnector.
- SELECTORSWITCH: A selector switch has multiple positions, and may change the source or level of power or other setting (according to the switched port type).
- TOGGLESWITCH: A toggle switch has two positions, and may enable or isolate electrical power or other setting (according to the switched port type).
- USERDEFINED: User-defined type.
- NOTDEFINED: Undefined type.

XSD Specification:

<xs:simpleType name="IfcSwitchingDeviceTypeEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="contactor"/>
<xs:enumeration value="dimmerswitch"/>
<xs:enumeration value="emergencystop"/>
<xs:enumeration value="keypad"/>
<xs:enumeration value="momentaryswitch"/>
<xs:enumeration value="selectorswitch"/>
<xs:enumeration value="starter"/>
<xs:enumeration value="switchdisconnector"/>
<xs:enumeration value="toggleswitch"/>
<xs:enumeration value="userdefined"/>
<xs:enumeration value="notdefined"/>
</xs:restriction>
</xs:simpleType>

EXPRESS Specification:

TYPE IfcSwitchingDeviceTypeEnum = ENUMERATION OF (
| CONTACTOR, DIMMERSWITCH, EMERGENCYSTOP, KEYPAD, MOMENTARYSWITCH, SELECTORSWITCH, STARTER, SWITCHDISCONNECTOR, TOGGLESWITCH, USERDEFINED, NOTDEFINED);
END_TYPE;

EXPRESS-G diagram

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