Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
PWB01CM4810A – 480V 1/3-PH PWR FACTOR RELAY
Carlo Gavazzi PWB01CM4810A power factor monitoring relay for three-phase 380–480 V AC motor load monitoring and industrial automation applications.
£152.07
Why Choose the Carlo Gavazzi PWB01CM4810A Cos Phi Monitoring Relay?
The Carlo Gavazzi PWB01CM4810A is a reliable three-phase power factor (cos phi) monitoring relay designed for monitoring motor load conditions and detecting changes in electrical performance within industrial systems. As part of the Carlo Gavazzi PWB01 power monitoring relay series, it provides accurate power factor supervision for motor protection, automation and process control applications.
This monitoring relay measures the power factor of three-phase AC loads to identify abnormal operating conditions such as underload, overload or loss of mechanical load. Its compact plug-in housing design enables simple installation while providing dependable relay switching for alarm and control circuits.
With a 380–480 V AC three-phase voltage range, a measurement capability up to 10 A or through compatible MI current transformers, and a 1 SPDT relay output, the PWB01CM4810A is suitable for monitoring pumps, motors, fans and industrial machinery.
Key Advantages
- Compact power factor monitoring relay for three-phase motor supervision.
- 380–480 V AC three-phase monitoring range for industrial applications.
- Detects changes in motor loading by measuring cos phi.
- Up to 10 A measurement range or operation with MI current transformers.
- 1 SPDT change-over relay output for alarm and control functions.
- Space-saving 36 mm plug-in housing design.
Key Features
- Carlo Gavazzi PWB01 power monitoring relay series.
- Three-phase power factor (cos phi) monitoring.
- 380–480 V AC supply voltage.
- Measurement range up to 10 A or via MI current transformers.
- 1 x SPDT relay output.
- Adjustable upper and lower power factor monitoring levels.
- Delay-on-alarm function.
- 36 mm plug-in housing for control panel installation.
Reliable Motor Load Monitoring for Industrial Systems
Power factor monitoring relays such as the Carlo Gavazzi PWB01CM4810A provide an effective method of supervising motor operation by measuring the relationship between voltage and current. Changes in cos phi can indicate variations in mechanical load, allowing control systems to react quickly to abnormal conditions.
The PWB01 series is designed for industrial automation engineers and machine builders requiring dependable electrical monitoring. Its compact plug-in format, relay output and compatibility with current transformers allow simple integration into motor control and protection systems.
Typical Applications
- Industrial motor load monitoring systems.
- Pumps and water handling equipment.
- Fans and ventilation systems.
- Industrial machinery and automation equipment.
- Process control installations.
- OEM electrical control panels.
Technical Specifications
Tick the specs you need, then view products that match.
| Mounting Type | Plug-in socket | |
|---|---|---|
| Monitoring Function | Power / cos φ | |
| Monitored Supply | Three-phase | |
| Coil / Supply Voltage | 380 V AC, 400 V AC, 415 V AC, 440 V AC, 480 V AC | |
| IP Rating | IP20 | |
| Manufacturer | Carlo Gavazzi | |
| Series | PWB01 Power Monitoring Relays | |
| Model | PWB01CM4810A | |
| Product type | Power factor (cos phi) monitoring relay | |
| Monitoring function | Power factor | |
| Supply voltage | 380–480 V AC | |
| Three-phase voltage range | 380–480 V AC | |
| Current measurement range | Up to 10 A or via MI current transformers | |
| Cos phi measurement range | 0.1–0.99 | |
| Frequency range | 45–65 Hz | |
| Output | 1 x SPDT change-over contact | |
| Alarm function | Over and under power factor monitoring | |
| Time delay | Delay on alarm | |
| Maximum permitted delay-on energisation time | 30 s | |
| Mounting type | Plug-in | |
| Electrical connection | Plug-in connection | |
| Housing width | 36 mm | |
| Protection rating | IP20 |
Frequently Asked Questions
What is the Carlo Gavazzi PWB01CM4810A used for?
The PWB01CM4810A is used for monitoring the power factor (cos phi) of three-phase AC motors and electrical loads in industrial applications.
What voltage supply does the PWB01CM4810A require?
The Carlo Gavazzi PWB01CM4810A operates from a 380–480 V AC three-phase supply.
What current measurement range does this relay support?
The relay supports measurement up to 10 A directly or through compatible MI current transformers.
What type of output does the relay provide?
The PWB01CM4810A provides a 1 x SPDT change-over relay output for switching and alarm applications.
How is the PWB01CM4810A installed?
The relay uses a compact 36 mm plug-in housing for installation in industrial control panels.
Trusted by Industrial Automation Professionals
Carlo Gavazzi monitoring relays are widely used in industrial automation and control systems to provide dependable electrical monitoring, motor protection and efficient machine operation.
