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PPB02CM44 – 3 Phase Monitoring Relay
Carlo Gavazzi PPB02CM44 is a True RMS three-phase monitoring relay for phase loss, phase sequence and voltage asymmetry across 208–480 V AC industrial power systems.
£137.32
Why Choose the Carlo Gavazzi PPB02CM44 3-Phase Monitoring Relay?
The Carlo Gavazzi PPB02CM44 is a compact and reliable three-phase voltage monitoring relay designed to monitor industrial electrical supplies for phase loss, incorrect phase sequence and voltage asymmetry. As part of the Carlo Gavazzi PPB02 monitoring relay series, it provides dependable supervision of three-phase and three-phase plus neutral power systems in industrial automation and machinery applications.
The relay supports a wide nominal voltage range from 208 V to 480 V AC and can operate at frequencies from 50 Hz to 400 Hz. The voltage asymmetry threshold can be adjusted from 2% to 22%, while an adjustable alarm delay from 0.1 s to 30 s helps prevent unwanted tripping caused by temporary supply disturbances.
The PPB02CM44 uses a compact 36 mm wide plug-in housing designed for an Undecal socket and provides an SPDT relay output for connection to machine control and alarm circuits. Its regenerated voltage detection and filtered switch-mode power supply provide reliable operation when monitoring industrial electrical networks.
Key Advantages
- Reliable three-phase mains monitoring relay for industrial applications.
- Detects phase loss, phase sequence and voltage asymmetry.
- Wide 208–480 V AC nominal voltage range.
- Supports frequencies up to 400 Hz.
- Adjustable voltage asymmetry threshold from 2% to 22%.
- Adjustable alarm delay from 0.1 s to 30 s.
- SPDT relay output for alarm and machine control circuits.
- Compact plug-in construction for an Undecal socket.
Key Features
- Carlo Gavazzi PPB02 three-phase monitoring relay series.
- 208–480 V AC nominal voltage range.
- Selectable voltage ranges covering 208–240 V, 208–480 V, 380–480 V and 440–480 V AC.
- 50–60 Hz and 50–400 Hz frequency ranges depending on the selected operating range.
- True RMS three-phase voltage measurement.
- Phase loss detection.
- Phase sequence detection.
- Voltage asymmetry monitoring.
- Adjustable asymmetry trip level from 2% to 22%.
- Adjustable alarm delay from 0.1 s to 30 s.
- SPDT electromechanical relay output.
- Regenerated voltage detection.
- Switch-mode power supply from all three measured phases.
- Compact 36 mm plug-in housing.
Reliable Three-Phase Power Monitoring for Industrial Systems
Three-phase monitoring relays continuously supervise electrical supplies and provide a control response when abnormal phase or voltage conditions are detected. This helps automation systems identify missing phases, incorrect phase sequence and excessive voltage imbalance before these conditions can adversely affect connected machinery.
The Carlo Gavazzi PPB02CM44 monitors three-phase mains with or without a neutral conductor and uses True RMS measurement for accurate voltage supervision. Its adjustable asymmetry threshold, configurable alarm delay and regenerated voltage detection provide flexible monitoring for industrial control panels, motors, transformers and production machinery.
Typical Applications
- Industrial three-phase power supply monitoring.
- Motor and transformer protection systems.
- Industrial control panels and automation equipment.
- Machine tools and production machinery.
- Pumps, compressors and HVAC equipment.
- Packaging and manufacturing systems.
- Electrical alarm and protection circuits.
- OEM machinery and industrial automation systems.
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 | PPB02 | |
| Model | PPB02CM44 | |
| Product type | True RMS 3-phase voltage monitoring relay | |
| Monitoring functions | Phase loss, phase sequence and voltage asymmetry | |
| Nominal voltage range | 208–480 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 | |
| Asymmetry adjustment | 2–22% | |
| Alarm delay | 0.1–30 s | |
| Power supply | Supplied from the measured phases | |
| Power consumption | <2.5 VA | |
| Output | 1 × SPDT electromechanical relay | |
| Mounting | Plug-in | |
| Socket type | Undecal | |
| Housing material | PA66 or Noryl | |
| Housing colour | RAL7035 light grey | |
| Protection rating | IP20 | |
| Dimensions (H × W × D) | 80 × 36 × 94 mm | |
| Weight | approx. 150 g | |
| Operating temperature | −20 to +60 °C | |
| Storage temperature | −30 to +80 °C | |
| Relative humidity | 5–95% non-condensing | |
| Maximum operating altitude | 2000 m above sea level |
Frequently Asked Questions
What is the Carlo Gavazzi PPB02CM44 used for?
The PPB02CM44 monitors three-phase electrical supplies for phase loss, incorrect phase sequence and voltage asymmetry.
What voltage range does the PPB02CM44 monitor?
The relay supports nominal three-phase voltages from 208 V to 480 V AC, with an operating range of approximately 177 V to 552 V AC.
What frequency can the PPB02CM44 monitor?
The PPB02CM44 supports frequencies from 50 Hz to 400 Hz, depending on the selected operating voltage range.
Can the voltage asymmetry threshold be adjusted?
Yes. The voltage asymmetry trip level can be adjusted from 2% to 22% to suit the requirements of the monitored electrical system.
What type of relay output does the PPB02CM44 provide?
The PPB02CM44 provides one SPDT electromechanical relay output for connection to machine control, alarm and protection circuits.
Trusted by Industrial Automation Engineers Worldwide
Carlo Gavazzi PPB02 monitoring relays provide dependable three-phase mains supervision, helping automation engineers detect phase and voltage faults across industrial machinery, control panels and electrical installations.
