20/08/2026
Acrel ALP220‑EF Earth‑fault Relay – Comprehensive LV Power System Protection
Secure your low‑voltage distribution network with Acrel ALP220‑EF Earth‑fault Relay.
Equipped with complete protection functions for industrial & building power systems:
✅ Inverse‑time overcurrent 51
✅ Inverse‑time earth‑fault 51G
✅ Three‑stage definite‑time overcurrent 50/51
✅ Three‑stage definite‑time earth‑fault 50N/51N
✅ Current unbalance protection 46
✅ Residual current (earth‑leakage) monitoring 50G
ALP220‑EF quickly identifies earth faults, phase unbalance and leakage hazards.
Effectively avoid unexpected power outages, prevent equipment burnout and guarantee operator safety.
Perfect for LV switchgear, factories, commercial complexes and public infrastructure projects.
Reach out to get datasheet and custom solution support.
Web:www.acrel-electric.eu
Email:[email protected]
Tina Li +86151 6162 6103