Carlo Gavazzi DUB71CB48500V AC/DC voltage monitoring relay with 2–500 V range, SPDT relay output and DIN rail mounting for industrial protection applications.
£115.57
The Carlo Gavazzi DUB71CB48500V is a precise and reliable single-phase AC/DC over and undervoltage monitoring relay designed to protect electrical systems by continuously monitoring voltage levels and providing relay switching when abnormal conditions occur. As part of the advanced Carlo Gavazzi DUB71 monitoring relay series, it is designed for industrial automation, electrical protection systems and control panel applications.
This monitoring relay provides a wide 2–500 V AC/DC monitoring range with selectable voltage functions including overvoltage, undervoltage and combined over or undervoltage monitoring. Its compact 35.5 mm DIN rail housing and SPDT relay output allow straightforward integration into industrial control systems.
With a 24/48 V AC supply, adjustable delay on alarm and flexible AC/DC voltage supervision capability, the DUB71CB48500V is ideal for machine builders, electrical engineers and automation professionals requiring dependable voltage monitoring and fault detection.
Voltage monitoring relays such as the Carlo Gavazzi DUB71CB48500V help protect electrical equipment by detecting abnormal voltage conditions and activating relay outputs when preset limits are exceeded. This enables automated alarms, shutdown actions and improved system reliability.
The DUB71 series is designed for industrial automation engineers and electrical panel builders requiring accurate monitoring devices with compact DIN rail installation. Its wide AC/DC measurement capability makes it suitable for a broad range of industrial control and protection applications.
| Voltage | 500 V |
|---|---|
| Manufacturer | Carlo Gavazzi |
| Series | DUB71 |
| Model | DUB71CB48500V |
| Product type | Voltage monitoring relay |
| Monitoring function | Overvoltage / undervoltage / over or undervoltage |
| Voltage measurement range | 2–500 V AC/DC |
| Additional voltage ranges | 24–240 V AC/DC, 208–480 V AC |
| Supply voltage | 24/48 V AC |
| Output | 1 SPDT relay |
| Contact rating | 5 A at 250 V AC |
| Delay on alarm | 0.1–30 s adjustable |
| Mounting type | Mini DIN rail mounting |
| Connection type | Screw terminals |
| Protection rating | IP20 |
| Dimensions (H × W × D) | 81 × 35.5 × 67.2 mm |
| Operating temperature | -20 to +60 °C |
The Carlo Gavazzi DUB71CB48500V is used for monitoring AC/DC voltage levels and providing relay switching when overvoltage or undervoltage conditions occur.
The relay monitors voltage signals within a 2–500 V AC/DC range with selectable measurement ranges.
The DUB71CB48500V provides a single SPDT relay output for alarm and control applications.
The relay operates from a 24/48 V AC supply.
The DUB71CB48500V is typically installed inside electrical control panels using its compact 35.5 mm DIN rail housing.
Carlo Gavazzi monitoring relays are widely used by electrical engineers and automation specialists to provide reliable voltage supervision, fault detection and protection across industrial applications.
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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...