MiCOM P24x | Schneider Motor Protection Relay

Products Micom P24x

Motor protection that reacts before the torque drops

MiCOM P24x delivers fast, layered protection for medium-to-large motors — guarding starts, stalls, unbalance and internal faults with precision built for industrial duty.

Explore More

Motors fail fast. Protection must act faster

Aging motor relays can’t track thermal stress, miss negative-sequence currents, ignore slow stalls, and fail to detect internal ground faults. Cue unexpected shutdowns, burnt windings and downtime that halts entire processes.

Weak thermal tracking

Missed phase unbalance

Stall blind spots

No differential security

Poor start analysis

Meet MiCOM P24x — built for every motor that matters

The MiCOM P24x series (P241, P242, P243) brings comprehensive rotating-machine protection to industrial and utility environments. From overcurrent, earth fault and thermal models to differential logic in P243, the range shields motors of every size and duty cycle. With strong scheme logic, operator-friendly HMIs and modern communication stacks, P24x delivers reliability for high-value motors where failure is not an option.

Protection that understands motors, not just currents

Stalls, starts, heating and internal faults — covered from every angle.

Precise thermal modelling

Protects stator and rotor heating with realistic time constants.

Multi-stage overcurrent

Four OC stages with selectable IDMT or definite-time for flexible grading.

High-sensitivity earth fault

Directional and non-directional EF covers all grounding types.

Motor differential intelligence (P243)

Fast 87M protection detects internal phase faults instantly.

Reliable start & stall logic

Monitors starting current, start duration and locked-rotor conditions.

Unbalance detection

Negative-sequence overcurrent trips early on phase failure

Voltage & frequency security

Over/under voltage, sensitive neutral displacement, frequency anomalies — all monitored.

Built for endurance. Tuned for precision

Machine-grade protection wrapped in rugged MiCOM hardware

1A / 5A CT inputs

Voltage inputs (100–120V and extended ranges)

Logic inputs: 8 to 32

Output relays: 7 to 32

High-break output options

Fully programmable scheme logic (PSL)

3-phase machine differential (P243)

4-stage overcurrent (50/51)

Multi-stage earth fault (50N/51N/67N)

Restricted earth fault (64)

Thermal overload (49)

Negative-sequence overcurrent (46)

Undervoltage / overvoltage

Underfrequency / frequency anomalies

Sensitive earth-fault overvoltage

Motor start supervision

Stall protection

Breaker failure (50BF)

CT/VT supervision

Courier / Modbus

IEC 60870-5-103

IEC 61850

RS232 / RS485 / fibre ports

Optional Ethernet

Redundant Ethernet (PRP/HSR)

IRIG-B time sync

–25°C to +55°C

IP52 front protection

40 / 60 / 80 TE cases

Panel or rack mount

IEC 60255 tested

Where MiCOM P24x makes the difference

Engineered for motors that can’t afford to slow down

Medium-voltage induction motors

Synchronous motors

Pump, compressor and blower drives

Industrial process motors

Utility station motors

High-inertia or high-start-duty motors

Purpose-built for motors. Trusted across industries

Ideal for any critical rotating-machine environment.

Oil & Gas

Steel & Metals

Water & Wastewater

Mining & Minerals

Power Generation

Cement & Heavy Industries

Motor protection tuned to your process

We configure, test and refine every P24x to match your start profiles, load cycles and failure modes.

Services

Relay Testing, Programming & Configuration

Integrated solutions for complete motor protection

Compatible control, protection, and monitoring solutions designed to operate alongside MiCOM P24x, enabling coordinated machine protection, diagnostics, and reliable operation across demanding industrial power systems.