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DUA55CM44 – 1-PHASE MAINS QUALITY RELAY
Carlo Gavazzi DUA55CM44 single phase AC voltage monitoring relay designed for overvoltage and undervoltage window monitoring in industrial control systems.
£86.03
Why Choose the Carlo Gavazzi DUA55CM44 Voltage Monitoring Relay?
The Carlo Gavazzi DUA55CM44 is a compact and reliable single-phase AC voltage window monitoring relay designed to protect electrical systems by detecting when supply voltage moves outside a selected tolerance range. As part of the Carlo Gavazzi DUA55 monitoring relay series, it provides dependable voltage supervision for industrial automation, machinery and electrical control applications.
This monitoring relay measures its own supply voltage and activates its relay output when the monitored voltage is outside the configured voltage window. With selectable tolerance settings, LED status indication and a compact DIN-rail housing, it is suitable for reliable monitoring of industrial mains supplies.
With a 208–480 V AC nominal monitoring range, a self-powered design and a SPDT relay output, the DUA55CM44 is ideal for applications requiring protection against incorrect mains voltage conditions.
Key Advantages
- Compact single-phase voltage window monitoring relay for industrial applications.
- 208–480 V AC monitoring range suitable for industrial mains supplies.
- Detects both overvoltage and undervoltage conditions.
- SPDT relay output provides flexible alarm and control integration.
- Selectable voltage tolerance settings of ±10% or ±15%.
- Compact 17.5 mm DIN-rail housing saves panel space.
Key Features
- Carlo Gavazzi DUA55 monitoring relay series.
- Single-phase AC voltage window monitoring.
- 208–480 V AC nominal voltage range.
- Monitors its own power supply voltage.
- 1 × SPDT relay output.
- Overvoltage and undervoltage detection.
- Selectable voltage window tolerance.
- LED indication for power supply and relay status.
- Mini DIN-rail mounting design.
Reliable Voltage Protection for Industrial Systems
Voltage monitoring relays such as the Carlo Gavazzi DUA55CM44 provide continuous supervision of electrical supplies to help protect machinery and control systems from incorrect voltage conditions. By detecting abnormal mains voltage levels, they can trigger protective actions before equipment operation is affected.
The DUA55 series is designed for industrial engineers and panel builders requiring compact and dependable voltage monitoring solutions. Its self-powered operation, relay output and DIN-rail format allow straightforward integration into electrical control systems.
Typical Applications
- Industrial electrical protection systems.
- Automation control panels.
- Motor and machinery protection circuits.
- Power supply monitoring applications.
- Industrial distribution systems.
- Control cabinet voltage supervision.
Technical Specifications
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| Mounting Type | DIN rail | |
|---|---|---|
| Monitoring Function | Voltage | |
| Monitored Supply | Single-phase | |
| Switching Current (A) | 5 A | |
| IP Rating | IP20 | |
| Manufacturer | Carlo Gavazzi | |
| Series | DUA55 | |
| Model | DUA55CM44 | |
| Product type | Single-phase AC voltage monitoring relay | |
| Monitoring function | Overvoltage and undervoltage window monitoring | |
| Voltage monitoring range | 177–550 V AC | |
| Nominal supply range | 208–480 V AC | |
| Supply voltage | Self-powered | |
| Frequency | 45–65 Hz | |
| Output | 1 × SPDT relay | |
| Contact rating | 5 A at 250 V AC | |
| Voltage tolerance | ±10% or ±15% | |
| Mounting type | Mini DIN-rail mounting | |
| Housing width | 17.5 mm | |
| Protection rating | IP20 | |
| Dimensions (W × H × D) | approx. 17.5 × 81 × 67.2 mm |
Frequently Asked Questions
What is the Carlo Gavazzi DUA55CM44 used for?
The DUA55CM44 is used to monitor single-phase AC voltage and detect when the supply moves outside the selected voltage tolerance window.
What voltage range does the DUA55CM44 monitor?
The relay monitors single-phase AC voltage within a 208–480 V AC nominal range.
What faults can the DUA55CM44 detect?
The relay detects both overvoltage and undervoltage conditions when the supply moves outside the configured tolerance range.
What type of output does the DUA55CM44 provide?
The relay provides a SPDT relay output for connection to alarms, contactors or control systems.
How is the Carlo Gavazzi DUA55CM44 installed?
The relay is designed for installation inside electrical control panels using a compact 17.5 mm DIN-rail mounting housing.
Trusted by Industrial Automation Engineers
Carlo Gavazzi DUA55 monitoring relays are widely used in industrial control applications to provide reliable voltage supervision, fault detection and protection for electrical equipment.
