Carlo Gavazzi PPB02CM23 is a True RMS three-phase monitoring relay for phase loss, phase sequence and voltage asymmetry on 208–240 V AC industrial power systems.
£161.55
The Carlo Gavazzi PPB02CM23 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 three-phase mains supervision for industrial automation, machinery and electrical control systems.
The relay is designed for 208–240 V AC three-phase supplies and operates at 50–60 Hz. It monitors three-phase systems with either three wires or four wires and is powered directly from the monitored mains. Adjustable voltage asymmetry monitoring and an alarm delay help the relay distinguish genuine supply faults from short-duration disturbances.
The PPB02CM23 uses a compact 36 mm plug-in housing and provides a changeover SPDT relay output for integration with machine control and alarm circuits. Its True RMS measurement and high harmonic immunity make it suitable for industrial environments where electrical noise and distorted waveforms may otherwise affect monitoring performance.
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 PPB02CM23 monitors the three-phase mains using True RMS measurement and can operate on both three-wire and four-wire systems. Its adjustable asymmetry setpoint and configurable time delay provide flexible monitoring for industrial control panels, motor systems and production machinery.
| Manufacturer | Carlo Gavazzi |
|---|---|
| Series | PPB02 |
| Model | PPB02CM23 |
| Product type | True RMS 3-phase voltage monitoring relay |
| Monitoring functions | Phase sequence, phase loss and voltage asymmetry |
| Nominal voltage range | 208–240 V AC |
| Supply voltage tolerance | ±15% |
| Operating voltage range | 177–276 V AC |
| Input frequency | 50–60 Hz |
| System configuration | 3-phase or 3-phase + neutral |
| Power supply | Supplied by the monitored mains |
| Power consumption | <2.5 VA |
| Power-on delay | 1 s ± 0.5 s or 6 s ± 0.5 s |
| Alarm delay | Up to 30 s |
| Output | 1 × SPDT changeover relay |
| Mounting | Plug-in |
| Housing width | 36 mm |
| Protection rating | IP20 |
| Setting method | Front adjustment |
| NFC setting | No |
| Approvals | Europe, North America and Australia |
| EAN | 8030956001020 |
The PPB02CM23 monitors three-phase electrical supplies for phase loss, incorrect phase sequence and voltage asymmetry.
The relay is designed for nominal three-phase voltages from 208 V to 240 V AC, with a supply operating range of approximately 177 V to 276 V AC.
The PPB02CM23 is designed for three-phase supplies operating at 50–60 Hz.
Yes. The PPB02CM23 provides an adjustable voltage asymmetry setpoint, allowing the monitoring relay to be configured for the required application.
The PPB02CM23 provides one SPDT changeover relay output for connection to machine control, alarm and protection circuits.
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.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...