Railway protection that never blinks
MiCOM P138 delivers fast, selective overcurrent and voltage protection designed for railway substations — built to secure feeders, transformers, and catenary systems across every voltage band.
Explore MoreIn rail networks, even seconds feel like miles
Outdated relays struggle with multi-voltage grids, high inrush currents, dead-tank transformers, and demanding feeder loads. The result? Slow trips, unsafe switching, and costly downtime that ripples across the entire route.
Meet MiCOM P138 — made for rail
MiCOM P138 is a railway-grade overcurrent and voltage protection relay engineered for 16.7, 25, 50, and 60 Hz systems. It secures catenary feeders, dead-tank transformers, busbars, and upstream substations with advanced logic, high-speed tripping, and built-in switchgear control. Modular, rugged, and protocol-rich — it’s built for rail where reliability is non-negotiable.
Protection shaped for rail
From dead-tank detection to synchronism check, P138 keeps critical rail power safe, stable, and ready.
Accurate multi-frequency protection
Handles 16.7/25/50/60 Hz without external converters.
Dead-tank transformer safety
Residual current protection prevents hidden failures
High-speed feeder clearing
DTOC, IDMT, and high-set stages trip before faults propagate.
Integrated switchgear control
Operate breakers, isolators, and feeders directly from the relay.
Auto-reclose that restores quickly
Keeps catenary systems energised after transient faults.
Voltage & frequency stability
Over/under-voltage and frequency protection for grid compliance.
Built for precision and endurance.
Every module engineered for railway-grade accuracy.
Where MiCOM P138 makes the difference
Purpose-built for rail power — from traction substations to feeder backup.
Designed for rail. Trusted beyond rail
Perfect for railways — reliable for any multi-voltage or feeder-based system.
Railways & Metro Networks
Rail Power Protection Scope
Designed for catenary feeders, dead-tank transformers, busbars, and traction substations requiring fast, selective, and multi-frequency protection.
Services
Relay Testing, Programming & Configuration
Complementary Rail Protection Solutions
Compatible protection relays, communication modules, and control components that enhance coordinated protection across railway and traction power infrastructure.
Upgrade your railway protection
Talk to our relay experts for configuration, setup, or modernisation using MiCOM P138.
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