Main circuit breaker AB type BJ340325K1 - Model: AB-60 - Rated current: 40A - Voltage: 100/200V - Earth leakage protection: Yes - Overcurrent protection: Yes - Test button: Yes - Manufacturer: Matsushita Electric Works, Ltd. It's old, but it was working until it was removed on 12/7. Judging by the manufacturing date in the lower right corner, I think it was made in 2001.