Carlo Gavazzi DUB71CB23500V single phase AC/DC voltage monitoring relay designed for overvoltage and undervoltage detection in industrial control systems.
£115.57
The Carlo Gavazzi DUB71CB23500V is a precise and reliable single-phase AC/DC voltage monitoring relay designed to protect electrical systems by detecting overvoltage and undervoltage conditions. As part of the advanced Carlo Gavazzi DUB71 monitoring relay series, it provides accurate voltage supervision for industrial automation, electrical control panels and machinery protection applications.
This monitoring relay continuously monitors an external voltage signal and switches its relay output when the measured voltage exceeds or falls below configured limits. With selectable measuring ranges, adjustable voltage thresholds, hysteresis control, delay settings and programmable operating functions, it provides flexible protection for demanding industrial environments.
With a 2–500 V AC/DC monitoring range, a 115/230 V AC supply voltage and a SPDT relay output, the DUB71CB23500V is ideal for applications requiring dependable overvoltage and undervoltage monitoring in industrial control systems.
Voltage monitoring relays such as the Carlo Gavazzi DUB71CB23500V provide continuous supervision of electrical supplies to help protect sensitive equipment, machinery and automation systems. By detecting abnormal voltage conditions, they can trigger alarms or switching actions before faults affect system operation.
The DUB71 series is designed for industrial engineers and panel builders requiring accurate and flexible voltage monitoring solutions. Its true RMS measurement, adjustable parameters and relay output allow straightforward integration into modern electrical installations.
| Manufacturer | Carlo Gavazzi |
|---|---|
| Series | DUB71 |
| Model | DUB71CB23500V |
| Product type | Single-phase AC/DC voltage monitoring relay |
| Monitoring function | Overvoltage and undervoltage |
| Voltage monitoring range | 2–500 V AC/DC |
| Additional voltage ranges | 24–240 V AC/DC and 208–480 V AC |
| Supply voltage | 115/230 V AC |
| Output | 1 × SPDT relay |
| Contact rating | 5 A at 250 V AC |
| Measurement type | True RMS AC/DC |
| Time delay | Adjustable delay on alarm |
| Mounting type | Mini DIN-rail mounting |
| Housing width | 35.5 mm |
| Protection rating | IP20 |
The DUB71CB23500V is used to monitor external AC/DC voltage signals and provide relay switching when overvoltage or undervoltage conditions are detected.
The relay monitors external voltage signals within the 2–500 V AC/DC range.
The relay provides a SPDT relay output for connection to alarms, contactors or control systems.
The relay operates from a 115/230 V AC supply.
The relay is designed for installation inside electrical control panels using a compact 35.5 mm DIN-rail mounting housing.
Carlo Gavazzi DUB71 monitoring relays are widely used in industrial control applications to provide accurate voltage supervision, fault detection and reliable protection for electrical systems.
● 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...