Multifunction feeder protection relay for modern substations

Feeder protection that thinks faster than the fault

MiCOM P841 brings fast, flexible feeder protection with dual-breaker control, advanced logic, and rock-solid automation for modern substations.

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Feeder faults don’t wait. Your protection shouldn’t either

Old relays miss directional logic, struggle with SEF, misread breaker health, and fall short in mesh or ring systems. That leads to slow clears, mis-ops, and long recovery times.

Weak EF sensitivity

Breaker health unknown

No safe reclosing logic

Limited scheme control

Shallow event visibility

Meet MiCOM P841 — made for feeders that can’t afford hesitation

P841 delivers comprehensive phase and earth-fault protection with directional logic, REF, SEF, thermal models, and voltage/frequency supervision. It controls one or two breakers, handles auto-reclose with mesh-corner intelligence, and performs synchro-check before every close. With PSL logic, breaker condition monitoring, and strong communication protocols, P841 becomes the brain of any feeder bay.

Meet MiCOM P841 — made for feeders that can’t afford hesitation
Meet MiCOM P841 — made for feeders that can’t afford hesitation
Meet MiCOM P841 — made for feeders that can’t afford hesitation
Meet MiCOM P841 — made for feeders that can’t afford hesitation
Meet MiCOM P841 — made for feeders that can’t afford hesitation
Meet MiCOM P841 — made for feeders that can’t afford hesitation

Smarter logic. Safer switching. Stronger reliability.

Every feeder stays visible, protected, and ready.

Flexible feeder protection

Multiple overcurrent stages with directional logic for every network type.

High-sensitivity earth fault

SEF and REF catch low-level internal faults that others miss.

Breaker intelligence

Tracks wear, operating times, broken current and health.

Confident reclosing

Single/three-pole AR with skip-shot and leader/follower setups.

Voltage & frequency checks

Safe synchronism, safe closing, stable network support.

Automation built-in

PSL logic for interlocking, tripping, transfer schemes and workflows.

Engineered for accurate protection and strong control

Modular hardware. Tough design. Modern comms.

Engineered for accurate protection and strong control
Engineered for accurate protection and strong control

Up to 32 programmable digital inputs

Multiple outputs with high-break options

Modular case, panel-mount

Phase & earth overcurrent

SEF & REF

Negative sequence

Thermal overload

Voltage & frequency

Auto-reclose

Synchro-check

Breaker failure & condition monitoring

Ethernet, RS485

IEC 61850, Modbus, DNP3, IEC-103

IRIG-B time sync

24–250 V DC & 100–240 V AC

–25°C to +55°C

IP52 front panel

Where P841 makes feeders feel future-ready

Built for every layout. Trusted in every bay.

Distribution feeders

Ring main units / ring busbars

Mesh corner feeders

Breaker-and-a-half arrangements

Underground and overhead lines

Transformer-fed feeders with REF/SEF needs

Dependable across every network

Wherever feeders run, P841 protects.

Utilities

Utilities

Utilities

Industrial substations

Infrastructure networks

Generation switchyards

Smart grid retrofits

Protection where feeders define network reliability

MiCOM P841 is deployed across feeder bays that demand fast fault clearance, directional sensitivity, and dependable breaker control — supporting radial, ring, and mesh networks where visibility and automation are critical to uptime.

Services
Relay Testing, Programming & Configuration

Relay Testing, Programming & Configuration

Integrated solutions for complete feeder control

A compatible range of protection, automation, and communication products designed to operate alongside MiCOM P841, enabling coordinated reclosing, breaker supervision, and seamless integration into modern substation control systems.

Design feeder protection that reacts in milliseconds

Configure MiCOM P841 for your network topology, fault levels, and reclosing logic.

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