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PPB02CM48 – 480V 3-PH ASYMMETRY RLY
Carlo Gavazzi PPB02CM48 is a True RMS three-phase monitoring relay for phase loss, phase sequence and voltage asymmetry on 380–480 V AC industrial power systems.
£137.32
Why Choose the Carlo Gavazzi PPB02CM48 3-Phase Monitoring Relay?
The Carlo Gavazzi PPB02CM48 is a compact and reliable True RMS three-phase 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, machinery and electrical control applications.
The relay is designed for 380–480 V AC three-phase supplies and operates at 50–60 Hz. It monitors the three measured phases for phase sequence, phase loss and voltage asymmetry, with selectable nominal voltages of 380 V, 400 V, 415 V and 480 V AC for three-phase delta systems, plus 220 V, 230 V, 240 V and 277 V AC phase-to-neutral systems.
The PPB02CM48 is supplied directly from the measured phases and uses a compact 36 mm wide plug-in housing for an 11-pin socket. It provides an SPDT relay output for integration with machine control and alarm circuits, while regenerated voltage detection and an adjustable asymmetry threshold help provide dependable monitoring of industrial power systems.
Key Advantages
- Reliable True RMS three-phase monitoring relay for industrial applications.
- Detects phase loss, incorrect phase sequence and voltage asymmetry.
- Designed for 380–480 V AC three-phase systems.
- Supports 50–60 Hz industrial power supplies.
- Adjustable voltage asymmetry threshold for flexible fault detection.
- Adjustable alarm delay from 0.1 s to 30 s.
- SPDT relay output provides a practical interface for machine control and alarm circuits.
- Compact 36 mm plug-in housing for installation on an 11-pin socket.
Key Features
- Carlo Gavazzi PPB02 three-phase monitoring relay series.
- 380–480 V AC nominal three-phase voltage range.
- Selectable delta nominal voltages of 380 V, 400 V, 415 V and 480 V AC.
- Selectable star nominal voltages of 220 V, 230 V, 240 V and 277 V AC when a neutral is intrinsically present at the star centre.
- 50–60 Hz operating frequency.
- True RMS three-phase voltage measurement.
- Phase loss detection.
- Phase sequence detection.
- Voltage asymmetry monitoring.
- Adjustable asymmetry trip level.
- Adjustable alarm delay from 0.1 s to 30 s.
- SPDT electromechanical relay output.
- Regenerated voltage detection.
- Power supplied directly from the measured phases.
- Compact 36 mm plug-in housing.
- No NFC setting capability.
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 PPB02CM48 measures three-phase mains using True RMS measurement and can monitor both three-wire and four-wire systems. Its selectable nominal voltage settings, adjustable asymmetry threshold and configurable alarm delay provide a flexible monitoring solution for industrial control panels, motor systems 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 | PPB02CM48 | |
| Product type | True RMS 3-phase voltage monitoring relay | |
| Monitoring functions | Phase loss, phase sequence and voltage asymmetry | |
| Nominal line voltage range | 380–480 V AC | |
| Supply voltage tolerance | ±15% | |
| Supply operating range | 323–552 V AC L-L | |
| Delta nominal voltages | 380 V, 400 V, 415 V and 480 V AC | |
| Star nominal voltages | 220 V, 230 V, 240 V and 277 V AC | |
| Input frequency | 50–60 Hz | |
| Mains configuration | 3-phase or 3-phase + neutral | |
| Power supply | Supplied by measured phases L1, L2 and L3 | |
| Power consumption | <2.5 VA | |
| Power-on delay | 1 s ± 0.5 s or 6 s ± 0.5 s | |
| Alarm delay | 0.1–30 s | |
| Output | 1 × SPDT relay | |
| 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 | |
| Storage temperature | −30 to +80 °C | |
| Setting method through NFC | No | |
| Approvals | Europe, North America and Australia | |
| EAN | 8030956001037 |
Frequently Asked Questions
What is the Carlo Gavazzi PPB02CM48 used for?
The PPB02CM48 monitors three-phase electrical supplies for phase loss, incorrect phase sequence and voltage asymmetry.
What voltage range does the PPB02CM48 monitor?
The relay is designed for nominal three-phase line voltages from 380 V to 480 V AC, with an operating supply range of approximately 323 V to 552 V AC line-to-line.
What nominal voltage settings are available?
For three-phase delta systems, the PPB02CM48 supports 380 V, 400 V, 415 V and 480 V AC. For three-phase plus neutral systems, selectable phase-to-neutral values include 220 V, 230 V, 240 V and 277 V AC.
Can the voltage asymmetry threshold and alarm delay be adjusted?
Yes. The PPB02CM48 provides an adjustable voltage asymmetry threshold and an alarm delay from 0.1 s to 30 s, allowing the relay to be configured for the monitored electrical system.
What type of relay output does the PPB02CM48 provide?
The PPB02CM48 provides one SPDT 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.
