Micrologic
⚡ Micrologic Trip Unit
Micrologic
is the electronic trip unit
used in Schneider Electric’s MasterPact ACBs(NT/NW and MTZ).
It serves as the breaker’s control and measurement brain, providing precise protection, advanced metering, and diagnostics
for low‑voltage power distribution.
🔧 What Micrologic Does
- Protection — LSIG protection with adjustable long‑time, short‑time, instantaneous, and ground‑fault settings.
- Measurement — Real‑time current, voltage (MTZ), power, energy, and power‑quality data.
- Diagnostics — Event logs, alarms, trip history, and waveform capture (MTZ).
- Control — Zone‑selective interlocking, load shedding, and communication with BMS/SCADA.
🧩 Micrologic Generations
- Micrologic A/E/P/H — Used in MasterPact NT/NW (protection + metering tiers).
- Micrologic X — Digital‑native trip unit for MasterPact MTZ with app‑based configuration and digital modules.
🛠️ Key Features
- High accuracy — Electronic sensing ensures stable, repeatable protection.
- Communication‑ready — Modbus, Ethernet, EcoStruxure integration.
- Energy metering — Built‑in Class 1 metering (model‑dependent).
- Arc‑flash mitigation — Fast algorithms + zone‑selective interlocking.
- Digital upgrades (MTZ) — Add functions via software without hardware changes.
⭐ One‑line summary
Micrologic is the intelligent electronic trip unit that gives MasterPact breakers precise protection, advanced metering, and digital diagnostics for modern LV power systems.










