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Ships within 48 hours · Estimated delivery Sep 23 - Sep 28
Delay at Power Up: 500 ms
Capacitor energy storage module (nonremovable)
Update Time: 1 ms per channel
Certifications: CE-marked (EU Low Voltage and EMC Directives)
Hot Swapping: Not allowed (per intrinsic safety requirements)
ABB REF541 Feeder Terminal Relay Dual-Channel Speed/Key Monitor Module Delay at Power Up: 500Description The ABB REF541 is a multifunctional feeder protection relay designed for medium voltage distribution systems. It integrates protection, control, measurement, and automation capabilities into a single compact unit. Specifications Product Type: Feeder Protection Relay Model: REF541 Application Scope: Medium voltage networks, switchgear, capacitor banks, and motors Protection Functions: Overcurrent, earth fault, phase unbalance, motor