配線 はいせん よう遮断 しゃだん じゃなかったです
haisen'yōshadankijanakattadesu

Noun
Desu Copula

The polite, past negative form of 配線用遮断器

1. Was not a circuit breaker.; Wasn't for wiring.

Past/Perfective
Negative
Polite
Casual Register
Electrical Engineering