⮗

Glyph origin
Postal mark (〒) in an enclosing triangle. Jurisdiction over the electrical power industry was at one point in history held by the Ministry of Communications, which also operated the postal system.

Symbol

 * 1) Certification symbol for a Category A electrical appliance.

Usage notes
The symbol ⮗ was used to mark Category A appliances, while the symbol marked Category B appliances. These marks are not stipulated by the current (2001), which instead governs the PSE diamond for Category A appliances.