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PPB01CM48N – 380-415V 3-PH OVER/UNDER VOLTAGE RELAY
Carlo Gavazzi PPB01CM48N is a three-phase voltage monitoring relay for phase loss, overvoltage and undervoltage monitoring on 380–480 V AC industrial power systems without phase-sequence detection.
£137.32
Why Choose the Carlo Gavazzi PPB01CM48N 3-Phase Voltage Monitoring Relay?
The Carlo Gavazzi PPB01CM48N is a reliable three-phase voltage monitoring relay designed to monitor industrial electrical supplies for phase loss, 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 PPB01CM48N is designed for 380–480 V AC three-phase supplies and operates at 50–60 Hz. The N version is designed to monitor phase loss and voltage levels without phase-sequence detection. Separate overvoltage and undervoltage setpoints can be adjusted, while an adjustable alarm delay helps prevent unwanted relay operation caused by short-duration voltage disturbances.
The relay uses a compact 36 mm wide plug-in housing for an 11-pin socket and provides an SPDT electromechanical relay output for connection to machine control, alarm and protection circuits. Its self-supplied design means that the relay is powered directly from the measured three-phase supply.
Key Advantages
- Reliable three-phase voltage monitoring relay for industrial power systems.
- Monitors phase loss, overvoltage and undervoltage.
- Designed for 380–480 V AC three-phase supplies.
- No phase-sequence detection, making it suitable for applications where phase order monitoring is not required.
- Adjustable undervoltage and overvoltage thresholds.
- Adjustable alarm delay from 0.1 s to 30 s.
- SPDT relay output provides a practical interface for control and alarm circuits.
Key Features
- Carlo Gavazzi PPB01 three-phase voltage monitoring relay series.
- 380–480 V AC nominal voltage range.
- 50–60 Hz operating frequency.
- Three-phase voltage monitoring for industrial electrical systems.
- Phase loss monitoring.
- Separate overvoltage and undervoltage monitoring.
- 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.
- Compact 36 mm plug-in housing for an 11-pin socket.
- LED indication for device, alarm and relay status.
Reliable Three-Phase Power Monitoring for Industrial Systems
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 PPB01CM48N measures the three-phase supply and monitors its voltage against independently adjustable upper and lower limits. Its phase-loss monitoring and configurable alarm delay make it suitable for industrial control panels, machinery and electrical protection systems where phase-sequence detection is not required.
Typical Applications
- Industrial three-phase power supply monitoring.
- Motor and transformer protection systems.
- Industrial control panels and automation equipment.
- Pumps, compressors and HVAC systems.
- Machine tools and production machinery.
- Packaging and manufacturing equipment.
- Electrical alarm and protection circuits.
- OEM machinery and industrial automation systems.
Technical Specifications
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| Mounting Type | Plug-in socket | |
|---|---|---|
| Monitoring Function | Three-phase supply | |
| Monitored Supply | Three-phase | |
| Time Delay | Adjustable | |
| IP Rating | IP20 | |
| Manufacturer | Carlo Gavazzi | |
| Series | PPB01 | |
| Model | PPB01CM48N | |
| Product type | Three-phase voltage monitoring relay | |
| Monitoring functions | Phase loss, overvoltage and undervoltage | |
| Phase sequence monitoring | No | |
| Nominal voltage range | 380–480 V AC | |
| Operating voltage range | 323–552 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 | |
| Power supply | Supplied by measured phases | |
| Power consumption | <2.5 VA | |
| Mounting | Plug-in | |
| Socket | 11-pin Undecal | |
| Housing width | 36 mm | |
| Dimensions (H × W × D) | 80 × 36 × 94 mm | |
| Protection rating | IP20 | |
| Housing material | PA66 or Noryl | |
| Housing colour | RAL7035 light grey | |
| Weight | approx. 150 g |
Frequently Asked Questions
What is the Carlo Gavazzi PPB01CM48N used for?
The PPB01CM48N monitors three-phase electrical supplies for phase loss, overvoltage and undervoltage conditions.
What voltage range does the PPB01CM48N monitor?
The relay is designed for nominal three-phase voltages from 380 V to 480 V AC, with an operating voltage range of approximately 323 V to 552 V AC.
Does the PPB01CM48N detect phase sequence?
No. The PPB01CM48N is an N-version monitoring relay without phase-sequence detection; it monitors phase loss, overvoltage and undervoltage.
Can the voltage thresholds and alarm delay be adjusted?
Yes. The undervoltage and overvoltage thresholds can be adjusted independently from approximately 2% to 22% of the nominal voltage, with an adjustable alarm delay from 0.1 s to 30 s.
What type of mounting does the PPB01CM48N use?
The PPB01CM48N uses a 36 mm wide plug-in housing designed for an 11-pin Undecal socket.
Trusted by Industrial Automation Engineers Worldwide
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.
