Bussmann ECNR20 NSNBC01 Electrical Circuit Breaker

Bussmann ECNR20 NSNBC01 is a 20‑amp RK5‑class bullet current‑limiting time‑delay fuse from Bussmann (Eaton Electrical Division) designed to protect electrical circuits while tolerating transient inrush. It is rated for 250 VAC and 125 VDC with an interrupt rating of 200 kAIC, making it suitable for power input protection in industrial control panels and electrical equipment where short surges must be allowed to pass without nuisance blows. This dual‑element, time‑delay fuse combines fast response to sustained faults with the ability to withstand brief overloads, helping to prevent unnecessary downtime in machinery and process lines. The ECNR20 NSNBC01 is part of Bussmann’s fuse portfolio, now marketed under Eaton Bussmann, and is commonly used in industrial and automotive electronics applications where reliable overcurrent protection is required.