Carlo Gavazzi PPB01CM48 is a three-phase voltage monitoring relay for phase loss, phase sequence, overvoltage and undervoltage monitoring on 380–480 V AC industrial power systems.
£161.55
The Carlo Gavazzi PPB01CM48 is a reliable three-phase voltage monitoring relay designed to monitor industrial electrical supplies for phase loss, incorrect phase sequence, overvoltage and undervoltage conditions. As part of the proven Carlo Gavazzi PPB01 monitoring relay series, it provides dependable supervision of three-phase power systems where accurate voltage monitoring is essential.
The relay is designed for 380–480 V AC three-phase systems and operates at 50–60 Hz. Its monitoring functions help identify abnormal supply conditions and provide a relay output for use within machine control, alarm and protection circuits. Adjustable voltage thresholds and an adjustable alarm delay allow the relay to be configured for different industrial applications.
The PPB01CM48 uses a compact 36 mm wide plug-in housing and is designed for installation using a compatible socket. With an SPDT relay output rated up to 8 A at 250 V AC, it provides a practical interface between three-phase supply monitoring and downstream control equipment.
Three-phase voltage monitoring relays continuously supervise electrical supplies and provide a control response when abnormal voltage or phase conditions are detected. This helps automation systems identify supply faults before they can adversely affect connected machinery, motors and electrical equipment.
The Carlo Gavazzi PPB01CM48 measures its own three-phase supply and monitors the voltage level against separately adjustable upper and lower limits. Its phase sequence and phase loss monitoring functions, together with configurable alarm delay, make it suitable for industrial control panels, machinery and electrical protection systems.
| Manufacturer | Carlo Gavazzi |
|---|---|
| Series | PPB01 |
| Model | PPB01CM48 |
| Product type | Three-phase voltage monitoring relay |
| Monitoring functions | Phase loss, phase sequence, overvoltage and undervoltage |
| Nominal voltage range | 380–480 V AC |
| Measuring range | 323–550 V AC |
| Input frequency | 50–60 Hz |
| Input configuration | 3-phase or 3-phase + neutral |
| Undervoltage adjustment | −2% to −22% |
| Overvoltage adjustment | +2% to +22% |
| Alarm delay | 0.1–30 s |
| Output | 1 × SPDT electromechanical relay |
| Relay contact rating | 8 A at 250 V AC, AC1 |
| Power consumption | approx. 13 VA at 400 V AC, 50 Hz |
| Mounting | Plug-in socket mounting |
| Housing width | 36 mm |
| Dimensions (H × W × D) | 80 × 36 × 94 mm |
| Protection rating | IP20 |
| Operating temperature | −20 to +60 °C |
| Weight | approx. 150 g |
| EAN | 8030956001013 |
The PPB01CM48 monitors three-phase electrical supplies for phase loss, incorrect phase sequence, overvoltage and undervoltage conditions.
The relay is designed for nominal three-phase voltages from 380 V to 480 V AC, with a measuring range extending from approximately 323 V to 550 V AC.
The PPB01CM48 is designed for three-phase supplies operating at 50–60 Hz.
Yes. The undervoltage and overvoltage thresholds can be adjusted independently from approximately 2% to 22% of the selected nominal voltage.
The PPB01CM48 provides one SPDT electromechanical relay output, rated up to 8 A at 250 V AC under AC1 conditions.
Carlo Gavazzi PPB01 voltage monitoring relays provide dependable supervision of three-phase power supplies, helping automation engineers detect phase and voltage faults across industrial machinery, control panels and electrical installations.
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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...