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PPB01CM44 – 3 Phase Monitoring Relay
Carlo Gavazzi PPB01CM44 is a three-phase voltage monitoring relay for phase loss, phase sequence, overvoltage and undervoltage monitoring across 208–480 V AC supplies.
£137.32
Why Choose the Carlo Gavazzi PPB01CM44 3-Phase Voltage Monitoring Relay?
The Carlo Gavazzi PPB01CM44 is a versatile three-phase voltage monitoring relay designed to monitor industrial power supplies for phase loss, incorrect phase sequence, overvoltage and undervoltage conditions. As part of the Carlo Gavazzi PPB01 monitoring relay series, it is suitable for three-phase and three-phase plus neutral systems where reliable mains supervision is required.
The relay supports a wide nominal voltage range from 208 V to 480 V AC and operating frequencies from 50 Hz to 400 Hz. Eight selectable nominal voltage ranges can be configured using the front DIP switches, while the under and overvoltage thresholds can be adjusted independently from 2% to 22% of the selected nominal voltage.
The PPB01CM44 uses a plug-in housing for an Undecal socket and provides an SPDT electromechanical relay output rated up to 8 A at 250 V AC. Adjustable alarm delay from 0.1 s to 30 s helps prevent unwanted tripping caused by temporary overvoltage or undervoltage conditions, making the relay suitable for demanding power monitoring applications.
Key Advantages
- Advanced three-phase voltage monitoring relay for industrial power systems.
- Monitors phase loss, phase sequence, overvoltage and undervoltage.
- Wide 208–480 V AC nominal voltage range.
- Supports mains frequencies up to 400 Hz.
- Adjustable under and overvoltage thresholds from 2% to 22%.
- Adjustable alarm delay from 0.1 s to 30 s.
- SPDT relay output provides remote alarm and status indication.
Key Features
- Carlo Gavazzi PPB01 three-phase voltage monitoring relay series.
- 208–480 V AC nominal three-phase voltage range.
- Selectable nominal voltages of 208, 220, 230, 240, 380, 400, 415 and 480 V.
- Compatible with 3-phase and 3-phase + neutral systems.
- 50–400 Hz operating frequency range.
- Adjustable undervoltage threshold from −2% to −22%.
- Adjustable overvoltage threshold from +2% to +22%.
- Adjustable alarm delay from 0.1 s to 30 s.
- SPDT electromechanical relay output.
- Three status LEDs for power, alarm and relay output indication.
- Regenerated voltage detection for motor and transformer loads.
- Undecal plug-in housing for socket mounting.
Reliable Three-Phase Power Monitoring for Industrial Systems
Three-phase monitoring relays continuously supervise electrical supplies and can disconnect or signal a downstream control circuit when abnormal voltage or phase conditions are detected. This helps protect equipment from potentially damaging supply faults and provides reliable monitoring of industrial power systems.
The Carlo Gavazzi PPB01CM44 monitors the phase-to-phase voltages of three-phase supplies and can operate with or without a neutral conductor. Its selectable voltage ranges, adjustable alarm thresholds and configurable delay make it suitable for a wide variety of industrial mains monitoring applications, including systems operating at higher frequencies up to 400 Hz.
Typical Applications
- Industrial three-phase power supply monitoring.
- Motor and transformer protection systems.
- Pumps and compressor installations.
- HVAC and building services equipment.
- Lifts and escalators.
- Material handling machinery.
- Mobile machinery and equipment with variable mains conditions.
- Airport and aircraft applications requiring up to 400 Hz monitoring.
Technical Specifications
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| Mounting Type | Plug-in socket | |
|---|---|---|
| Monitored Supply | Three-phase | |
| Time Delay | Adjustable | |
| Monitoring Function | Three-phase supply | |
| IP Rating | IP20 | |
| Manufacturer | Carlo Gavazzi | |
| Series | PPB01 | |
| Model | PPB01CM44 | |
| Product type | Three-phase voltage monitoring relay | |
| Monitoring functions | Phase loss, phase sequence, overvoltage and undervoltage | |
| Nominal voltage range | 208–480 V AC | |
| Nominal voltage settings | 208, 220, 230, 240, 380, 400, 415 and 480 V AC | |
| Supply voltage tolerance | ±15% | |
| Operating voltage range | 177–552 V AC | |
| Input frequency | 50–400 Hz | |
| Mains configuration | 3-phase or 3-phase + neutral | |
| Under-voltage adjustment | −2% to −22% | |
| Over-voltage adjustment | +2% to +22% | |
| Alarm delay | 0.1–30 s | |
| Phase loss reaction time | ≤200 ms | |
| Output | 1 × SPDT electromechanical relay | |
| Relay contact rating | 8 A at 250 V AC, AC1 | |
| Power consumption | <2.5 VA | |
| Mounting | Plug-in | |
| Socket type | Undecal | |
| Protection rating | IP20 | |
| Housing material | PA66 or Noryl | |
| Housing colour | RAL7035 light grey | |
| Dimensions (H × W × D) | 80 × 36 × 94 mm | |
| Weight | approx. 150 g | |
| Operating temperature | −20 to +60 °C | |
| Storage temperature | −30 to +80 °C |
Frequently Asked Questions
What is the Carlo Gavazzi PPB01CM44 used for?
The PPB01CM44 monitors three-phase electrical supplies for phase loss, incorrect phase sequence, overvoltage and undervoltage conditions.
What voltage range does the PPB01CM44 monitor?
The relay supports nominal three-phase voltages from 208 V to 480 V AC, with selectable nominal settings across this range.
What frequency can the PPB01CM44 monitor?
The PPB01CM44 supports supply frequencies from 50 Hz to 400 Hz, making it suitable for conventional industrial mains and higher-frequency applications.
Can the overvoltage and undervoltage thresholds be adjusted?
Yes. The overvoltage and undervoltage thresholds can each be adjusted from 2% to 22% of the selected nominal voltage.
What type of relay output does the PPB01CM44 have?
The relay provides one SPDT electromechanical output with a contact rating of up to 8 A at 250 V AC under AC1 conditions.
Trusted by Industrial Automation Engineers Worldwide
Carlo Gavazzi PPB01 voltage monitoring relays provide reliable supervision of three-phase power supplies, helping automation engineers detect phase and voltage faults across industrial machinery, motor systems and electrical installations.
