IEC 61010-2-201:2017

Overview

IEC 61010-2-201:2017 - part of the IEC 61010 family - defines particular safety requirements for control equipment used for measurement, control and laboratory use. It applies to products that perform the function of control equipment and their associated peripherals whose intended use is the command and control of machines, automated manufacturing and industrial processes (discrete and continuous control). This second edition (2017) is a technical revision of the 2013 edition and is intended to be used in conjunction with IEC 61010-1.

Key revision highlights:

• Clarified, amended or removed confusing definitions
• Revised and clarified temperature testing methodology
• Changed permissible documentation methodologies
• Updated some terminal markings and informative annexes
• Added Annex E and Annexes AA–FF for expanded guidance

Key topics and requirements

The standard supplements IEC 61010-1 with control-equipment–specific requirements, covering:

• Tests and verification: specified functional and safety tests and routine tests for production verification.
• Marking and documentation: required markings, terminal identification, and documentation practices for safe installation, operation and maintenance.
• Protection against electric shock: insulation, clearances, creepage distances and testing between mains, secondary and accessible parts.
• Mechanical safety: protection against mechanical hazards and resistance to mechanical stresses (drop, vibration).
• Fire and temperature: requirements for spread-of-fire, material flammability and equipment temperature limits with clarified temperature-test methods.
• Protection from fluids, radiation and gases: safeguards against hazardous fluids, UV/laser/sonic emissions and liberated dangerous substances.
• Interlocks and protective circuits: requirements for interlocks, protective impedance and over-current protection.
• Risk assessment: obligations for assessing hazards arising from typical applications of control equipment.
• Informative and normative annexes: guidance on pollution degree reduction, routine tests, enclosure practices, measurement of clearances/creepage and historical techniques.

Applications and who uses it

IEC 61010-2-201 is essential for:

• Design and safety engineers creating control panels, PLC cabinets, HMIs and industrial controllers
• Manufacturers of automation and control equipment seeking product safety compliance and certification
• Test laboratories and certification bodies performing type and routine testing
• System integrators and machine builders responsible for safe installation and documentation
• Compliance officers and procurement teams specifying safety requirements for industrial equipment

Practical benefits include clearer design rules for insulation and enclosure, consistent test procedures, improved documentation practices, and reduced ambiguity when applying safety measures to control equipment.

Related standards

• IEC 61010-1 (General requirements for electrical equipment for measurement, control and laboratory use) - to be used together with Part 2-201
• IEC 61131-2 (referenced cross‑links for programmable controllers)

Keywords: IEC 61010-2-201:2017, control equipment safety, electrical equipment for measurement control and laboratory use, insulation, creepage, clearances, temperature testing, risk assessment, industrial automation compliance.