Eaton Power Defense PXR
Breaker trip unit that reports status, currents, voltages, power and energy of a Power Defense breaker.
The Eaton Power Defense PXR is the electronic trip unit of Power Defense molded case circuit breakers that protects the circuit and measures current, voltage, power and energy in the switchboard. This Modbus RTU template reads breaker status, loads, energy, counters and the event log, and lets you change relay, demand, clock and Modbus settings from ModbusCloud.
- Protocol
- Modbus RTU
- Connection
- RS485, 19200 baud
- Registers
- 393, read and write
- Brand
- Eaton
- Key readings
- Breaker status · Phase currents · Line voltages · Active power · Energy · Power factor · Trip counters · Breaker health
- Available commands
- Remote control commands · Relay functions · Power demand interval · Clock · Modbus settings
- Compatible models
- PXR 20 · PXR 20D · PXR 25 · PXR 25 Motor Protection · Power Defense frames 2 to 6 (PDG2 to PDG6) with integrated Modbus RTU
- Last updated
Registers (393)
392 read, 40 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| Breaker Status | Read | ||||
| Cause Of Status | Read | ||||
| Current Phase A | A | Read | |||
| Current Phase B | A | Read | |||
| Current Phase C | A | Read | |||
| Ground Current | A | Read | |||
| Neutral Current | A | Read | |||
| Voltage A-B | V | Read | |||
| Voltage B-C | V | Read | |||
| Voltage C-A | V | Read | |||
| Voltage A-N | V | Read | |||
| Voltage B-N | V | Read | |||
| Voltage C-N | V | Read | |||
| Peak Demand Current Phase A | A | Read | |||
| Peak Demand Current Phase B | A | Read | |||
| Peak Demand Current Phase C | A | Read | |||
| Peak Demand Neutral Current | A | Read | |||
| Active Power Total | W | Read | |||
| Reactive Power Total | var | Read | |||
| Apparent Power Total | VA | Read | |||
| Power Factor | Read | ||||
| Frequency | Hz | Read | |||
| Minimum Demand Current Phase A | A | Read | |||
| Minimum Demand Current Phase B | A | Read | |||
| Minimum Demand Current Phase C | A | Read | |||
| Minimum Demand Neutral Current | A | Read | |||
| Active Power Peak Demand | W | Read | |||
| Product ID | Read | ||||
| Frequency Fine | Hz | Read | |||
| Trip Unit Temperature | °C | Read | |||
| Reactive Power Peak Demand | var | Read | |||
| Apparent Power Peak Demand | VA | Read | |||
| Demand Current Phase A | A | Read | |||
| Demand Current Phase B | A | Read | |||
| Demand Current Phase C | A | Read | |||
| Demand Neutral Current | A | Read | |||
| Active Power Demand | W | Read | |||
| Reactive Power Demand | var | Read | |||
| Apparent Power Demand | VA | Read | |||
| Minimum Current Phase A | A | Read | |||
| Maximum Current Phase A | A | Read | |||
| Minimum Current Phase B | A | Read | |||
| Maximum Current Phase B | A | Read | |||
| Minimum Current Phase C | A | Read | |||
| Maximum Current Phase C | A | Read | |||
| Minimum Ground Current | A | Read | |||
| Maximum Ground Current | A | Read | |||
| Minimum Neutral Current | A | Read | |||
| Maximum Neutral Current | A | Read | |||
| Minimum Voltage A-B | V | Read | |||
| Maximum Voltage A-B | V | Read | |||
| Minimum Voltage B-C | V | Read | |||
| Maximum Voltage B-C | V | Read | |||
| Minimum Voltage C-A | V | Read | |||
| Maximum Voltage C-A | V | Read | |||
| Minimum Voltage A-N | V | Read | |||
| Maximum Voltage A-N | V | Read | |||
| Minimum Voltage B-N | V | Read | |||
| Maximum Voltage B-N | V | Read | |||
| Minimum Voltage C-N | V | Read | |||
| Maximum Voltage C-N | V | Read | |||
| Current Unbalance | % | Read | |||
| Voltage Unbalance | % | Read | |||
| Current Phase A THD | % | Read | |||
| Current Phase B THD | % | Read | |||
| Current Phase C THD | % | Read | |||
| Neutral Current THD | % | Read | |||
| Voltage A-B THD | % | Read | |||
| Voltage B-C THD | % | Read | |||
| Voltage C-A THD | % | Read | |||
| Voltage A-N THD | % | Read | |||
| Voltage B-N THD | % | Read | |||
| Voltage C-N THD | % | Read | |||
| Inst, Short Delay And High Inst Count | Read | ||||
| Long Delay And Ground Fault Trip Count | Read | ||||
| Operations Count | Read | ||||
| Short Delay Trip Count | Read | ||||
| Instantaneous Trip Count | Read | ||||
| High Current Trip Count | Read | ||||
| Long Delay Trip Count | Read | ||||
| Ground Fault Trip Count | Read | ||||
| Total Trip Count | Read | ||||
| Test Trip Count | Read | ||||
| Open By Communication Count | Read | ||||
| Manual Open Count | Read | ||||
| Last Operation Year | Read | ||||
| Last Operation Month | Read | ||||
| Last Operation Day | Read | ||||
| Last Operation Hour | Read | ||||
| Last Operation Minute | Read | ||||
| Last Operation Second | Read | ||||
| Maximum Trip Unit Temperature | °C | Read | |||
| Maximum Temperature Year | Read | ||||
| Maximum Temperature Month | Read | ||||
| Maximum Temperature Day | Read | ||||
| Maximum Temperature Hour | Read | ||||
| Maximum Temperature Minute | Read | ||||
| Maximum Temperature Second | Read | ||||
| Running Time Minutes | Read | ||||
| Running Time Hours | Read | ||||
| Running Time Days | Read | ||||
| Breaker Health | Read | ||||
| Harmonics Source | Read | ||||
| Harmonic 0 | % | Read | |||
| Harmonic 1 | % | Read | |||
| Harmonic 2 | % | Read | |||
| Harmonic 3 | % | Read | |||
| Harmonic 4 | % | Read | |||
| Harmonic 5 | % | Read | |||
| Harmonic 6 | % | Read | |||
| Harmonic 7 | % | Read | |||
| Harmonic 8 | % | Read | |||
| Harmonic 9 | % | Read | |||
| Harmonic 10 | % | Read | |||
| Harmonic 11 | % | Read | |||
| Harmonic 12 | % | Read | |||
| Harmonic 13 | % | Read | |||
| Harmonic 14 | % | Read | |||
| Harmonic 15 | % | Read | |||
| Harmonic 16 | % | Read | |||
| Harmonic 17 | % | Read | |||
| Harmonic 18 | % | Read | |||
| Harmonic 19 | % | Read | |||
| Harmonic 20 | % | Read | |||
| Harmonic 21 | % | Read | |||
| Harmonic 22 | % | Read | |||
| Harmonic 23 | % | Read | |||
| Harmonic 24 | % | Read | |||
| Harmonic 25 | % | Read | |||
| Harmonic 26 | % | Read | |||
| Harmonic 27 | % | Read | |||
| Harmonic 28 | % | Read | |||
| Harmonic 29 | % | Read | |||
| Harmonic 30 | % | Read | |||
| Harmonic 31 | % | Read | |||
| Harmonic 32 | % | Read | |||
| Harmonic 33 | % | Read | |||
| Harmonic 34 | % | Read | |||
| Breaker Closed | Read | ||||
| Unacknowledged Trip | Read | ||||
| Active Or Unacknowledged Alarm | Read | ||||
| Maintenance Mode Active | Read | ||||
| Test Mode Active | Read | ||||
| Long Delay Pickup Active | Read | ||||
| Zone Interlock Active | Read | ||||
| Ground Is Source Ground | Read | ||||
| Setpoint Password | Write | ||||
| Setpoint Group Select | Read and write | ||||
| Breaker Rating | A | Read | |||
| Breaker Frame | Read | ||||
| Style 1 | Read | ||||
| Style 2 | Read | ||||
| Maintenance Mode | Read and write | ||||
| ARMS Level | Read and write | ||||
| System Frequency | Hz | Read | |||
| Reverse Feed | Read and write | ||||
| Sign Convention | Read and write | ||||
| Power Demand Window | Read and write | ||||
| Power Demand Interval | min | Read and write | |||
| Display Language | Read and write | ||||
| Display Rotation | Read and write | ||||
| Relay 1 Function | Read and write | ||||
| Relay 2 Function | Read and write | ||||
| Relay 3 Function | Read and write | ||||
| Pole Location Phase A | Read and write | ||||
| Modbus Slave ID | Read and write | ||||
| Modbus Baud Rate | Read and write | ||||
| Modbus Parity | Read and write | ||||
| Modbus Stop Bits | Read and write | ||||
| Invalid Object Access Mode | Read and write | ||||
| Float Word Order | Read and write | ||||
| Fixed Point Word Order | Read and write | ||||
| Invalid Object Access Mode (High Address) | Read and write | ||||
| Float Word Order (High Address) | Read and write | ||||
| Fixed Point Word Order (High Address) | Read and write | ||||
| Remote Control Word 1 | Read and write | ||||
| Remote Control Word 2 | Read and write | ||||
| Remote Control Word 3 | Read and write | ||||
| Remote Control Word 1 (High Address) | Read and write | ||||
| Remote Control Word 2 (High Address) | Read and write | ||||
| Remote Control Word 3 (High Address) | Read and write | ||||
| Clock Month | Read and write | ||||
| Clock Day | Read and write | ||||
| Clock Year | Read and write | ||||
| Clock Day Of Week | Read and write | ||||
| Clock Hour | Read and write | ||||
| Clock Minute | Read and write | ||||
| Clock Second | Read and write | ||||
| Clock Hundredths Of Second | Read and write | ||||
| Device Name | Read | ||||
| Model Name | Read | ||||
| Catalog Number | Read | ||||
| Style Number | Read | ||||
| Serial Number | Read | ||||
| Date Code | Read | ||||
| Firmware Version 1 | Read | ||||
| Firmware Version 2 | Read | ||||
| USB Version | Read | ||||
| Product ID Fixed Data | Read | ||||
| Breaker Status (Fixed Point) | Read | ||||
| Cause Of Status (Fixed Point) | Read | ||||
| Current Phase A (Fixed Point) | A | Read | |||
| Current Phase B (Fixed Point) | A | Read | |||
| Current Phase C (Fixed Point) | A | Read | |||
| Ground Current (Fixed Point) | A | Read | |||
| Neutral Current (Fixed Point) | A | Read | |||
| Voltage A-B (Fixed Point) | V | Read | |||
| Voltage B-C (Fixed Point) | V | Read | |||
| Voltage C-A (Fixed Point) | V | Read | |||
| Voltage A-N (Fixed Point) | V | Read | |||
| Voltage B-N (Fixed Point) | V | Read | |||
| Voltage C-N (Fixed Point) | V | Read | |||
| Peak Demand Current Phase A (Fixed Point) | A | Read | |||
| Peak Demand Current Phase B (Fixed Point) | A | Read | |||
| Peak Demand Current Phase C (Fixed Point) | A | Read | |||
| Peak Demand Neutral Current (Fixed Point) | A | Read | |||
| Active Power Total (Fixed Point) | W | Read | |||
| Reactive Power Total (Fixed Point) | var | Read | |||
| Apparent Power Total (Fixed Point) | VA | Read | |||
| Power Factor (Fixed Point) | Read | ||||
| Frequency (Fixed Point) | Hz | Read | |||
| Minimum Demand Current Phase A (Fixed Point) | A | Read | |||
| Minimum Demand Current Phase B (Fixed Point) | A | Read | |||
| Minimum Demand Current Phase C (Fixed Point) | A | Read | |||
| Minimum Demand Neutral Current (Fixed Point) | A | Read | |||
| Active Power Peak Demand (Fixed Point) | W | Read | |||
| Frequency Fine (Fixed Point) | Hz | Read | |||
| Forward Energy | kWh | Read | |||
| Reverse Energy | kWh | Read | |||
| Total Energy | kWh | Read | |||
| Apparent Energy | kVAh | Read | |||
| Trip Unit Temperature (Fixed Point) | °C | Read | |||
| Reactive Power Peak Demand (Fixed Point) | var | Read | |||
| Apparent Power Peak Demand (Fixed Point) | VA | Read | |||
| Demand Current Phase A (Fixed Point) | A | Read | |||
| Demand Current Phase B (Fixed Point) | A | Read | |||
| Demand Current Phase C (Fixed Point) | A | Read | |||
| Demand Neutral Current (Fixed Point) | A | Read | |||
| Active Power Demand (Fixed Point) | W | Read | |||
| Reactive Power Demand (Fixed Point) | var | Read | |||
| Apparent Power Demand (Fixed Point) | VA | Read | |||
| Minimum Current Phase A (Fixed Point) | A | Read | |||
| Maximum Current Phase A (Fixed Point) | A | Read | |||
| Minimum Current Phase B (Fixed Point) | A | Read | |||
| Maximum Current Phase B (Fixed Point) | A | Read | |||
| Minimum Current Phase C (Fixed Point) | A | Read | |||
| Maximum Current Phase C (Fixed Point) | A | Read | |||
| Minimum Ground Current (Fixed Point) | A | Read | |||
| Maximum Ground Current (Fixed Point) | A | Read | |||
| Minimum Neutral Current (Fixed Point) | A | Read | |||
| Maximum Neutral Current (Fixed Point) | A | Read | |||
| Minimum Voltage A-B (Fixed Point) | V | Read | |||
| Maximum Voltage A-B (Fixed Point) | V | Read | |||
| Minimum Voltage B-C (Fixed Point) | V | Read | |||
| Maximum Voltage B-C (Fixed Point) | V | Read | |||
| Minimum Voltage C-A (Fixed Point) | V | Read | |||
| Maximum Voltage C-A (Fixed Point) | V | Read | |||
| Minimum Voltage A-N (Fixed Point) | V | Read | |||
| Maximum Voltage A-N (Fixed Point) | V | Read | |||
| Minimum Voltage B-N (Fixed Point) | V | Read | |||
| Maximum Voltage B-N (Fixed Point) | V | Read | |||
| Minimum Voltage C-N (Fixed Point) | V | Read | |||
| Maximum Voltage C-N (Fixed Point) | V | Read | |||
| Current Unbalance (Fixed Point) | % | Read | |||
| Voltage Unbalance (Fixed Point) | % | Read | |||
| Current Phase A THD (Fixed Point) | % | Read | |||
| Current Phase B THD (Fixed Point) | % | Read | |||
| Current Phase C THD (Fixed Point) | % | Read | |||
| Neutral Current THD (Fixed Point) | % | Read | |||
| Voltage A-B THD (Fixed Point) | % | Read | |||
| Voltage B-C THD (Fixed Point) | % | Read | |||
| Voltage C-A THD (Fixed Point) | % | Read | |||
| Voltage A-N THD (Fixed Point) | % | Read | |||
| Voltage B-N THD (Fixed Point) | % | Read | |||
| Voltage C-N THD (Fixed Point) | % | Read | |||
| Inst, Short Delay And High Inst Count (Fixed Point) | Read | ||||
| Long Delay And Ground Fault Trip Count (Fixed Point) | Read | ||||
| Operations Count (Fixed Point) | Read | ||||
| Short Delay Trip Count (Fixed Point) | Read | ||||
| Instantaneous Trip Count (Fixed Point) | Read | ||||
| High Current Trip Count (Fixed Point) | Read | ||||
| Long Delay Trip Count (Fixed Point) | Read | ||||
| Ground Fault Trip Count (Fixed Point) | Read | ||||
| Total Trip Count (Fixed Point) | Read | ||||
| Test Trip Count (Fixed Point) | Read | ||||
| Open By Communication Count (Fixed Point) | Read | ||||
| Manual Open Count (Fixed Point) | Read | ||||
| Last Operation Year (Fixed Point) | Read | ||||
| Last Operation Month (Fixed Point) | Read | ||||
| Last Operation Day (Fixed Point) | Read | ||||
| Last Operation Hour (Fixed Point) | Read | ||||
| Last Operation Minute (Fixed Point) | Read | ||||
| Last Operation Second (Fixed Point) | Read | ||||
| Maximum Trip Unit Temperature (Fixed Point) | °C | Read | |||
| Maximum Temperature Year (Fixed Point) | Read | ||||
| Maximum Temperature Month (Fixed Point) | Read | ||||
| Maximum Temperature Day (Fixed Point) | Read | ||||
| Maximum Temperature Hour (Fixed Point) | Read | ||||
| Maximum Temperature Minute (Fixed Point) | Read | ||||
| Maximum Temperature Second (Fixed Point) | Read | ||||
| Running Time Minutes (Fixed Point) | Read | ||||
| Running Time Hours (Fixed Point) | Read | ||||
| Running Time Days (Fixed Point) | Read | ||||
| Breaker Health (Fixed Point) | Read | ||||
| Harmonics Source (Fixed Point) | Read | ||||
| Harmonic 0 (Fixed Point) | % | Read | |||
| Harmonic 1 (Fixed Point) | % | Read | |||
| Harmonic 2 (Fixed Point) | % | Read | |||
| Harmonic 3 (Fixed Point) | % | Read | |||
| Harmonic 4 (Fixed Point) | % | Read | |||
| Harmonic 5 (Fixed Point) | % | Read | |||
| Harmonic 6 (Fixed Point) | % | Read | |||
| Harmonic 7 (Fixed Point) | % | Read | |||
| Harmonic 8 (Fixed Point) | % | Read | |||
| Harmonic 9 (Fixed Point) | % | Read | |||
| Harmonic 10 (Fixed Point) | % | Read | |||
| Harmonic 11 (Fixed Point) | % | Read | |||
| Harmonic 12 (Fixed Point) | % | Read | |||
| Harmonic 13 (Fixed Point) | % | Read | |||
| Harmonic 14 (Fixed Point) | % | Read | |||
| Harmonic 15 (Fixed Point) | % | Read | |||
| Harmonic 16 (Fixed Point) | % | Read | |||
| Harmonic 17 (Fixed Point) | % | Read | |||
| Harmonic 18 (Fixed Point) | % | Read | |||
| Harmonic 19 (Fixed Point) | % | Read | |||
| Harmonic 20 (Fixed Point) | % | Read | |||
| Harmonic 21 (Fixed Point) | % | Read | |||
| Harmonic 22 (Fixed Point) | % | Read | |||
| Harmonic 23 (Fixed Point) | % | Read | |||
| Harmonic 24 (Fixed Point) | % | Read | |||
| Harmonic 25 (Fixed Point) | % | Read | |||
| Harmonic 26 (Fixed Point) | % | Read | |||
| Harmonic 27 (Fixed Point) | % | Read | |||
| Harmonic 28 (Fixed Point) | % | Read | |||
| Harmonic 29 (Fixed Point) | % | Read | |||
| Harmonic 30 (Fixed Point) | % | Read | |||
| Harmonic 31 (Fixed Point) | % | Read | |||
| Harmonic 32 (Fixed Point) | % | Read | |||
| Harmonic 33 (Fixed Point) | % | Read | |||
| Harmonic 34 (Fixed Point) | % | Read | |||
| Forward Energy Wh | Wh | Read | |||
| Reverse Energy Wh | Wh | Read | |||
| Total Energy Wh | Wh | Read | |||
| Apparent Energy VAh | VAh | Read | |||
| Event Type Select | Read and write | ||||
| Earliest Event ID | Read | ||||
| Latest Event ID | Read | ||||
| Requested Event ID | Read and write | ||||
| Previous Event ID | Read | ||||
| Next Event ID | Read | ||||
| Event Month | Read | ||||
| Event Day | Read | ||||
| Event Year | Read | ||||
| Event Day Of Week | Read | ||||
| Event Hour | Read | ||||
| Event Minute | Read | ||||
| Event Second | Read | ||||
| Event Hundredths Of Second | Read | ||||
| Event Data Format | Read | ||||
| Event Validity Bits Low | Read | ||||
| Event Validity Bits High Or Cause | Read | ||||
| Event Status Cause | Read | ||||
| Event Current Phase A | A | Read | |||
| Event Current Phase B | A | Read | |||
| Event Current Phase C | A | Read | |||
| Event Neutral Current | A | Read | |||
| Event Ground Current Source | A | Read | |||
| Event Ground Current Residual | A | Read | |||
| Event Voltage A-B | V | Read | |||
| Event Voltage B-C | V | Read | |||
| Event Voltage C-A | V | Read | |||
| Event Voltage A-N | V | Read | |||
| Event Voltage B-N | V | Read | |||
| Event Voltage C-N | V | Read | |||
| Event Active Power | W | Read | |||
| Event Reactive Power | var | Read | |||
| Event Apparent Power | VA | Read | |||
| Event Active Power Demand | W | Read | |||
| Event Reactive Power Demand | var | Read | |||
| Event Apparent Power Demand | VA | Read | |||
| Event Trip Unit Temperature | °C | Read | |||
| Event Frequency | Hz | Read | |||
| Event Power Factor | Read | ||||
| Event Operations Count | Read | ||||
| Event Binary Status | Read | ||||
| Breaker Closed Valid | Read | ||||
| Unacknowledged Trip Valid | Read | ||||
| Active Or Unacknowledged Alarm Valid | Read | ||||
| Maintenance Mode Active Valid | Read | ||||
| Test Mode Active Valid | Read | ||||
| Long Delay Pickup Active Valid | Read | ||||
| Zone Interlock Active Valid | Read | ||||
| Ground Is Source Ground Valid | Read |
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Send your device list
If a device is not in the library yet, we build the template for free as soon as we have the register data.
Use cases
- Show the status and phase currents of every outgoing breaker in a switchboard on one ModbusCloud dashboard.
- Send an email alert when a breaker trips or when the cause of status changes away from normal.
- Track energy and peak demand per feeder over the 365 days of history to see which group uses the most.
- Watch phase current unbalance and THD to find overloaded or polluted circuits before they cause trouble.
- Follow trip and operation counters and the breaker health value to plan maintenance of the breaker.
Installation
Check that the PXR style has integrated Modbus RTU and that the trip unit gets 24 V DC auxiliary power.
Wire RTU_D(+) and RTU_D(-) as a shielded twisted pair to RS485 A and B of the ModbusCloud Gateway, connect RTU_GND and put 120 ohm termination at both ends of the bus.
Set the Modbus address, baud rate and parity on the trip unit display or with Power Xpert Protection Manager; the default is address 2, 19200 baud, even parity.
In ModbusCloud, add a Modbus device on the Gateway with the same address and settings and import this template.
Check that breaker status, phase currents and frequency come in and match the trip unit display.
Things to watch for
The breaker does not answer on Modbus at all. What should I check?
Integrated Modbus only works with 24 V DC auxiliary power on the trip unit and only on styles with Modbus. Then check address, baud rate and parity on the display (default 2, 19200, even), swap RTU_D(+) and RTU_D(-) if needed and make sure the bus is terminated at both ends.
Why do currents and power show huge or random numbers?
The trip unit sends 32-bit values low word first by default, which this template expects. If someone changed the float or fixed point word order registers to high word first, set them back or the values will be scrambled.
Why do some registers stay empty or return an error?
Not every PXR model measures everything: voltage, power, demand and harmonics need a PXR 25 or a style with voltage sensing, and ground current only exists on units with ground fault protection. Unused registers return an error or an invalid value on those models.
Can I change settings or reset the breaker from ModbusCloud?
Display, relay, demand, clock and Modbus settings can be written; the settings registers show group 0 by default. Writing setpoints needs the password first. Remote control commands such as reset trip use three words that the trip unit only accepts together in one write, so test each command carefully before you rely on it.
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