LOW VOLTAGE SWITCHGEAR AND CONTROL GEAR

APPLICABLE STANDARDS

IEC 60715IEC 60529IEC 60269

IEC 61439IEC 60947IEC 61641IEC 60059

Definitions for IEC standards

IEC 61439 - Low-voltage switchgear and control gear assemblies a. Part-1 : General rulesb. Part-2 : Power switchgear and control gear assembliesc. Part-3 : Distribution boards intended to be operated by

ordinary persons (DBO)d. Part-4 : Particular requirements for assemblies for

construction sites (ACS)e. Part-5 : Assemblies for power distribution in public

networksf. Part-6 : Busbar trunking systems (bus ways)

Definitions for IEC standardsIEC 60947 - Low-voltage switchgear and control geara. Part-1 : General rulesb. Part-2 : Circuit-breakersc. Part-3 : Switches, disconnectors, switch-

disconnectors and fuse-combination unitsd. Part-4-1 : Contactors and motor-starters -

Electromechanical contactors and motor-starterse. Part-4-2 : Contactors and motor-starters - AC

semiconductor motor controllers and startersf. Part-4-3 : Contactors and motor-starters - AC

semiconductor controllers and contactors for non-motor loads

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Definitions for IEC standardsIEC 60947 - Low-voltage switchgear and control geara. Part-5-1 : Control circuit devices and switching elements -

Electromechanical control circuit devicesb. Part-5-2 : Control circuit devices and switching elements -

Proximity switchesc. Part-5-3 : Control circuit devices and switching elements -

Requirements for proximity devices with defined behaviour under fault conditions (PDDB)

d. Part-5-4 : Control circuit devices and switching elements - Method of assessing the performance of low-energy contacts - Special tests

e. Part-5-5 : Control circuit devices and switching elements - Electrical emergency stop device with mechanical latching function

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Definitions for IEC standardsIEC 60947 - Low-voltage switchgear and control geara. Part 5-6 : Control circuit devices and switching

elements - DC interface for proximity sensors and switching amplifiers

b. Part 5-7 : Control circuit devices and switching elements - Requirements for proximity devices with analogue output

c. Part 5-8 : Control circuit devices and switching elements - Three-position enabling switches

d. Part 5-9 : Control circuit devices and switching elements - Flow rate switches

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Definitions for IEC standardsIEC 60947 - Low-voltage switchgear and control geara. Part 6-1 : Multiple function equipment - Transfer

switching equipmentb. Part 6-2 : Multiple function equipment - Control and

protective switching devices (or equipment) (CPS)c. Part 7-1 : Ancillary equipment - Terminal blocks for

copper conductorsd. Part 7-2 : Ancillary equipment - Protective conductor

terminal blocks for copper conductorse. Part 7-3 : Ancillary equipment - Safety requirements for

fuse terminal blocksf. Part 7-4 : Ancillary equipment - PCB terminal blocks for

copper conductorsg. Part 8 : Control units for built-in thermal protection (PTC) for

rotating electrical machines

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Definitions for IEC standardsIEC 60269 – Low Voltage Fuses

a. Part-1 : General requirementsb. Part-2 : Supplementary requirements for fuses for use by

authorized persons (fuses mainly for industrial application) - Examples of standardized systems of fuses A to K

c. Part-3 : Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household or similar applications) - Examples of standardized systems of fuses A to F

d. Part-4 : Supplementary requirements for fuse-links for the protection of semiconductor devices

e. Part-5 : Guidance for the application of low-voltage fusesf. Part-6 : Supplementary requirements for fuse-links for the

protection of solar photovoltaic energy systems

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Definitions for IEC standardsIEC 61641 - Guide for testing under conditions of arcing due to internal fault

IEC 60059 - IEC standard current ratings

IEC 60715 - Dimensions of low-voltage switchgear and controlgear. Standardized mounting on rails for mechanical support of electrical devices in switchgear and controlgear installations

IEC 60529 - Degrees of protection provided by enclosures (IP Code)

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