Main circuit
all the conductive parts of a switching device included in the circuit which it is designed to close or open
Hierarchy#
Ancestors (top) → KDA221 (highlighted) → subclasses and powertype instances. Capped at 12 each; see the full lists in the sections below.
Higher level classes2#
Declared properties5#
phase to neutral or phase to phase voltage value assigned to the connecting device by the manufacturer, this device being intended to be used in installations, the AC voltage supply of which does not exceed the rated insulation voltage of the connecting device itself
power dissipation calculated for one pole on the basis of the voltage drop measured at AC rated current under steady state conditions between its terminals
numeral defining a transient overvoltage condition
number of electrically separated conducting paths, each provided with a contact intended to connect and disconnect the main circuit of a switching device
maximum value of the AC rated operational voltage for which the device is suitable for use on IT systems
Imported properties6#
Imported property records not in browser data
Imported property references (entities not in browser data) (6)
- ACE410
- ACE424
- ACE457
- ACE460
- ACE532
- ACE401
These IRDIs appear in the source data but their full records weren't scraped.
Subclasses#
No subclasses
This class is a leaf — no other classes inherit from it.
Is case of (powertype parents)1#
Powertype parent records not in browser data
Is-case-of references (entities not in browser data) (1)
- ACC014
These IRDIs appear in the source data but their full records weren't scraped.
Instances (powertype)1#
Metadata#
- Version
- 1
- Revision
- 1
- Status
- Standard
- Publisher
- IEC
- Published in
- IEC 63508
- Responsible committee
- IEC/SC 23E
- Change request
C00138- Dates
- Original: 2025-10-15
- Current version: 2025-10-15
- Current revision: 2025-10-15
Full source data#
Every key from the original .xls export, including multilingual variants, status, publisher, committee, and workbook-specific codes.
Raw properties (20 keys from source .xls) — click to expand
- C002
- C00138
- C011
- IEC
- C012
- IEC 63508
- C016
- Standard
- MDC_P001_5
- 0112/2///63508#KDA221
- MDC_P002_1
- 1
- MDC_P002_2
- 1
- MDC_P003_0
- 2025-10-15
- MDC_P003_1
- 2025-10-15
- MDC_P003_2
- 2025-10-15
- MDC_P003_3
- 2025-10-15
- MDC_P004.en
- Main circuit
- MDC_P006.en
- all the conductive parts of a switching device included in the circuit which it is designed to close or open
- MDC_P010
- 0112/2///63508#KDA011
- MDC_P011
- ITEM_CLASS
- MDC_P012
- IEC/SC 23E
- MDC_P013
- {0112/2///62683#ACC014}
- MDC_P014
- {0112/2///63508#KDB002,0112/2///63508#KDB003,0112/2///63508#KDB020,0112/2///63508#KDB021,0112/2///63508#KDB025}
- MDC_P019
- false
- MDC_P090
- {0112/2///62683#ACE410,0112/2///62683#ACE424,0112/2///62683#ACE457,0112/2///62683#ACE460,0112/2///62683#ACE532,0112/2///62683#ACE401}
Version history1#
IEC CDD records every published revision of each entity — version number, status, timestamp, and the change request that introduced it. OpenCDD captures the full chain of custody from cdd.iec.ch; the entry marked Current is the one rendered on this page.