Focuses strictly on protecting operators standing in front of, beside, or behind the switchgear. Criteria 1 through 5 must be met.

Although the document is a Technical Report, specifying its use can lead to measurably higher operator safety and reduced downtime in the event of a fault. With the imminent transition to (expected in 2026), practitioners should begin preparing for the updated requirements, which will bring greater harmonization and embrace active arc‑mitigation technologies.

Provides personnel protection by ensuring that effects of an internal arc (like hot gases or fragments) are directed away from operators.

The cotton indicators placed outside the enclosure must not catch fire. This proves that escaping hot gases will not cause severe skin or clothing burns to a technician.

If the cotton cloth ignites or chars during the test, it indicates that hot gases or burning particles have escaped, failing the personal protection criteria. 2. Initiation of the Arc

Helps facility managers meet stringent occupational health and safety guidelines.

Tests are conducted in different functional zones of the assembly to ensure comprehensive coverage: Busbar systems (main and distribution busbars) Functional units (breakers, starters, switch-disconnectors) The Seven Assessment Criteria