SC 121A

Document for comment of SC 121A: Future project for maintenance of publication IEC 60947-7-1 Ed.3: Low-voltage switchgear and controlgear - Part 7-1: Ancillary equipment - Terminal blocks for copper conductors

IEC 60947-9-2 ED1: Low-voltage switchgear and controlgear - Part 9-2: Active arc-fault mitigation systems - Optical-based internal arc-detection and mitigation devices

Result of Voting on 121A/382A/NP - Revised PNW 121A-382 ED1: Electrical accessories – Residual current monitors (RCMs) – Part 2: RCMs for industrial applications up to 1000 V AC

Result of Voting on 121A/403/FDIS - IEC 60947-6-1 ED3: Low-voltage switchgear and controlgear - Part 6-1: Multiple function equipment - Transfer switching equipment

Result of Voting on 121A/370/CDV - IEC 60947-8 ED2: Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines

Report of comments on 121A/397/DC: Future project for maintenance of publication IEC 60947-4-1 ED4 - Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters - Electromechanical contactors and motor-starters

Report of comments on 121A/398/DC: Future project for maintenance of publication IEC 60947-4-1 Ed.4:  Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters - Electromechanical contactors and motor-starters

IEC 60947-9-2 ED1: Low-voltage switchgear and controlgear - Part 9-2: Active arc-fault mitigation systems - Optical-based internal arc-detection and mitigation devices

Report of comments on 121A/400/DC: Maintenance of the publication IEC 60947-5-5: Low-voltage switchgear and controlgear- Part 5-5: Control circuit devices and switching elements - Electrical emergency stopdevice with mechanical latching function

Report of comments on 121A/399/DC: Future project for maintenance of publication IEC 60947-5-7 ED1: Low-voltage switchgear and controlgear - Part 5-7: Control circuit devices and switching elements - Requirements for proximity devices with analogue output

Report of comments on 121A/388/DC: Request for validation of change request C00088 to IEC 62683-1

Document for comment: Evaluation of Change Request to IEC 62683DB

Report of comments on 121A/394/Q: Questionnaire to National Committees concerning SC 121A publications SD update

Revised Result of Voting on 121A/381/NP - PNW 121A-381: Low-voltage switchgear and controlgear – Part 10: Semiconductor circuit-breakers

Result of Questionnaire on 121A/390/Q: Extension for Convenors of  121A/WG 2, WG 3, WG 10 & WG 17

IEC 60947-6-1 ED3: Low-voltage switchgear and controlgear - Part 6-1: Multiple function equipment - Transfer switching equipment

Result of Voting on 121A/381/NP - PNW 121A-381: Low-voltage switchgear and controlgear – Part 10: Semiconductor circuit-breakers

Report of comments on 121A/389/DC:  Request for validation of change request C00087 to IEC 62683-1

Revised Result of Voting on 121A/338/CDV - IEC 60947-9-2 ED1: Low-voltage switchgear and controlgear - Active arc-fault mitigation systems - Part 9-2: Optical-based internal arc-detection and mitigation devices

Result of Questionnaire on 121A/387/Q: Nomination for Convenor of SC 121A/WG 19

Report of comments on 121A/386/DC: Request for validation of change request C00100 to IEC 62683-1

Document for comment: Future project for maintenance of publication IEC 60947-4-1 Ed.4: Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters - Electromechanical contactors and motor-starters

Document for comment: Future project for maintenance of publication IEC 60947-4-1 Ed.4: Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters - Electromechanical contactors and motor-starters

Document for comment: Future project for maintenance of publication IEC 60947-5-7 Ed.1: Low-voltage switchgear and controlgear - Part 5-7: Control circuit devices and switching elements - Requirements for proximity devices with analogue output

Document of comment: Maintenance of the publication IEC 60947-5-5: Low-voltage switchgear and controlgear - Part 5-5: Control circuit devices and switching elements - Electrical emergency stop device with mechanical latching function

Result of Voting on 121A/384/FDIS - IEC 60947-6-2 ED3: Low-voltage switchgear and controlgear - Part 6-2: Multiple function equipment - Control and protective switching devices (or equipment) (CPS)

Questionnaire to National Committees concerning SC121A publications SD update

 This document, 121A/393/Q, has been withdrawn.

Revised results of 121A/349/DC: Future project IEC 62683-2-2: Low-voltage switchgear and controlgear – Product data and properties for information exchange – Engineering data – Part 2-2: Switchgear amnd controlgear assembly objects for building information modelling

Revised Result of Voting on 121A/334/CDV - IEC 60947-6-1 ED3: Low-voltage switchgear and controlgear - Part 6-1: Multiple function equipment - Transfer switching equipment

Nomination of a Convenor for SC 121A/WG 19: Internal arc-fault detection and combined mitigation devices

Compilation of Comments on 121A/341/CD - IEC TS 60947-7-5 ED1: Low-voltage switchgear and controlgear - Part 7-5: Ancillary equipment - Terminal blocks for aluminium conductors

Document for comment of SC 121A: Request for validation of Change Request C00088 to IEC 62683-1

Document for comment: Request for validation of Change Request C00087 to IEC 62683-1

Questionnaire to National Committees concerning SC121A convenors mandate extensions

Document for comment: Request for validation of Change Request C00100 to IEC 62683-1

Replaced by 121A/387A/Q

Revised PNW 121A-382 ED1: Electrical accessories – Residual current monitors (RCMs) – Part 2: RCMs for industrial applications up to 1000 V AC

IEC 60947-6-2 ED3: Low-voltage switchgear and controlgear - Part 6-2: Multiple function equipment - Control and protective switching devices (or equipment) (CPS)

Results of 121A/373/DC: Evaluation of change request C00100 to IEC 62683DB of SC 121A

Replaced by 121A/382A/NP

Presentations to be tabled during next IEC SC121A Plenary Meeting on October 8^th, 2020 for NC experts information (second and last batch)

IEC 60947-8 ED2: Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines

Report of comments of 121A/364/DC: Request for validation of change request C00098 to IEC 62683-1

Results of 121A/363/Q: Questionnaire to National Committees concerning the revision of title and tasks of future SC121A/WG21 (actually MT7)

Results of comments on 121A/351/DC: Evaluation of change request C00087 to IEC 62683-1

Results of comments of 121A/352/DC: Evaluation of Change Request C00088 to IEC 62683 DB

Appointment of a secretary and an assistant secretary

Outcomes of SC121A/ AG 4 task Force on “Hybrid switching” in preparation to next SC 121A plenary meeting

Presentations to be tabled during next IEC SC121A Plenary Meeting on October 8^th, 2020 for NC experts information (first batch)

PNW 121A-381: Low-voltage switchgear and controlgear – Part 10: Semiconductor circuit-breakers

Reply to questionnaire to National Committees concerning organization of SC121A 2020 Plenary Meeting in Frankfurt-am-Main (DE)

Draft agenda for next SC121A plenary meeting to be held on 2020-10-08 in DKE main office (Stresemannallee 15, Frankfurt-am-Main, Germany). Opening time: 9:00 a.m., closing time: 5:00 p.m.

Evaluation of change request C00100 to IEC 62683DB of SC 121A

Result of Voting on 121A/358/FDIS - IEC 60947-5-8 ED2: Low-voltage switchgear and controlgear - Part 5-8: Control circuit devices and switching elements - Three-position enabling switches

Revised Result of Voting on 121A/270/CDV - IEC 60947-6-2 ED3: Low-voltage switchgear and controlgear - Part 6-2: Multiple function equipment - Control and protective switching devices (or equipment) (CPS)

Result of Voting on 121A/357/FDIS - IEC 60947-4-3 ED3: Low-voltage switchgear and controlgear - Part 4-3: Contactors and motor-starters – Semiconductor controllers and semiconductor contactors for non-motor loads

Replaced by 121A/367A/INF

Result 121A/347/DC: Request for Validation of change request C00089 to IEC 62683-1

Result of Voting on 121A/338/CDV - IEC 60947-9-2 ED1: Low-voltage switchgear and controlgear - Active arc-fault mitigation systems - Part 9-2: Optical-based internal arc-detection and mitigation devices

Result of Voting on 121A/353/FDIS - IEC 60947-4-2 ED4: Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters – Semiconductor motor controllers, starters and soft-starters

Document for comment: Request for validation of change request C00098 to IEC 62683-1

Result of Voting on 121A/334/CDV - IEC 60947-6-1 ED3: Low-voltage switchgear and controlgear - Part 6-1: Multiple function equipment - Transfer switching equipment

Comments received on 121A/348/DC: Evaluation of change request C00098 to IEC 62683-1

Questionnaire to National Committees concerning the revision of title and tasks of future SC121A/WG21 (actually MT7)

IEC 60947-5-8 ED2: Low-voltage switchgear and controlgear - Part 5-8: Control circuit devices and switching elements - Three-position enabling switches

Questionnaire to national committees concerning organization of SC 121A 2020 plenary meeting in Frankfurt-am-Main (DE).

IEC 60947-4-3 ED3: Low-voltage switchgear and controlgear - Part 4-3: Contactors and motor-starters – Semiconductor controllers and semiconductor contactors for non-motor loads

Result of Voting on 121A/340/FDIS - IEC 60947-3 ED4: Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units

Compilation of Comments on 121A/333/CD - IEC 60947-2 ED6: Low-voltage switchgear and controlgear - Part 2: Circuit-breakers

IEC 60947-4-2 ED4: Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters – Semiconductor motor controllers, starters and soft-starters

Report of 121A/343/Q: National Committees to questionnaire concerning the publication of CORR2 to IEC 60947-5-1 ED4

IEC 60947-9-2 ED1: Low-voltage switchgear and controlgear - Active arc-fault mitigation systems - Part 9-2: Optical-based internal arc-detection and mitigation devices

Document for comment: Evaluation of change request C00087 to IEC 62683-1

Document for comment: Evaluation of Change Request C00088 to IEC 62683 DB

Revised Result of Voting on 121A/307/CDV - IEC 60947-4-3 ED3: Low-voltage switchgear and controlgear - Part 4-3: Contactors and motor-starters – Semiconductor controllers and semiconductor contactors for non-motor loads