Technical Committees

02 Rotating Machines23A Metal Cable Trays
15C Electrical Tubing and Sleeving Products23A Electrical Non-Ferrous Rigid Conduit (Aluminum, Red Brass & Stainless Steel)
17A/121A/121B Industrial Control Equipment23A Nonmetallic Cable Trays
THSC 121A WG GR General Rules23A Metal Electrical Conduit and Fittings for Conduit and Cable
THSC 121A WG1 Medium Voltage Controllers23A Nonmetallic Raceway Products and Accessories
THSC 121A WG3 Pilot and Control Circuit Devices23A-62275 Cable Ties
THSC 121A WG4 Fire Pump Controllers23B-1 Switch and Outlet Boxes
THSC 121A WG5 Terminal Blocks23BC Wiring Devices
THSC 121A WG6 Transfer Switches23E Ground Fault Circuit Interrupters
17A/121A/17C/121B WG 7 Revising IEC-Based CANENA Harmonized Standards23H Pin and Sleeve Type Plugs, Receptacles and Connectors
THSC WG8 Transfer Switches over 750V32 Low Voltage Fuses and Fuseholders
THC 121A Enclosed Switches34 Lighting Products
121A Molded Case Circuit Breakers61C Safety Requirements for Household Refrigerators & Freezers
THC 121B Busways61D Air-Conditioning and Refrigeration Equipment
17D Panelboard and Switchboard70/31 Enclosures
121B Control Centers99 Connectors
20 Electric CablesTHC69-1 EVSE and Personnel Protection
THSC 20, Flexible Cords and CablesTHC69-2 EVSE Connectors
THSC 20, Building Wire and CableTHSC 20, Wire and Cable Test Methods
THSC23A-WG1 Electrical Rigid Metal Conduit – Aluminum, Red Brass, and Stainless SteelCANENA 121A PV Circuit Breakers
THC 26 Electric WeldingTHC 22H Uninterruptible power systems (UPS)
THSC 20 Electric Vehicle Cables

THSC 121/SC 121A, Low-Voltage Switchgear and Controlgear
Mr. Dan Nachtigall
Rockwell Automation
1201 South Second St.
Milwaukee, WI 53204 USA
Ph: (414) 382-1237
Fax: (414) 382-4140
Mr. Mike Leibowitz
1300 N. 17th Street, Suite 900
Rosslyn VA 22209 USA
Ph: (703) 841-3264
Fax: (703)841-3364
To develop trinational standard for general use requirements for industrial control equipment and maintain standards through active participation in revision process.
Standard: Low-voltage switchgear and controlgear – Part 1: General rules
Standard No.: C22.2 No. 60947-1, UL 60947-1, NMX-J-515-ANCE
Standard: Low-Voltage Switchgear and Controlgear – Part 4-2: Contactors and Motor-Starters – AC Semiconductor Motor Controllers and Starters
Standard No.: CSA C22.2 No 60947-4-2; UL 60947-4-2; NMX-J-XXX-ANCE, IEC 60947-1
79. General Rules
120. AC Semiconductor Motor Controllers and Starters
Publication Schedules