ABB SPER 1B1 C4 Trip Circuit Supervision Relay
Model: SPER 1B1 C4 (SPER1B1C4) Brand: ABB Series: SPER / SPACOM Monitoring Devices (Protection Relays) Core Function: Continuous supervision of circuit-breaker trip circuits and other critical control circuits in power electrical installations. Detects open circuits, bad contacts, contact welding, and loss of auxiliary voltage, providing immediate alarm indication. HS Code: 8536.49 / 8537.10 (Relays /…
