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RS PRO 3-Phase Monitoring Relay DPDT, DIN Rail and Surface Mount, 17.5mm Width 225-7388
Specifications
| Country of Origin | United Kingdom |
|---|---|
| Frequency range | 48 - 63Hz |
| Brand | RS PRO |
| Model | 225-7388 |
| IP Rating | IP20 |
| Width | 17.5mm |
| Mount Type | DIN Rail, Surface Mount |
| Input | L1, L2, L3, N Supply/monitoring voltage Un: There are 6 nominal voltages to choose from on this product |
| Series | RS PRO |
| Contact Configuration | DPDT |
| Terminal type | Screw |
| Output Rating | AC1 - 250V 5A, AC15 - 250V 2A, DC1 - 25V 5A |
| Overvoltage Category | III (IEC 60664) |
| Electrical Phase | 3 |
| Electrical Life | ≥ 150,000 ops at rated load |
| Rated Impulse Withstand Voltage | 4kV (1.2/50 μS) |
| Dielectric voltage | 2kV AC (rms) IEC 60947-1 |
| 3-wire monitoring | 380, 400, 415V AC |
| 4-wire monitoring | 220, 230, 240V AC |
| Relay configuration | DPDT |
| Declarations | CE, RoHS, and C-tick compliant |
Key Features
- Compact 17.5mm wide DIN rail housing designed for space efficiency.
- Microprocessor-based true RMS monitoring of 3-phase voltages.
- Adjustable under-voltage trip and time delay settings for precise protection.
- DPDT relay output rated for AC1 250V 5A, AC15 250V 2A, and DC1 25V 5A.
- Green and red LED indicators for supply and relay status visibility.
- Supports 3-wire and 4-wire supply voltages with selectable nominal values.
- Protects against phase loss, neutral loss, under-voltage, and incorrect phase sequence.
- Compliant with EN 61000-6-4, EN 61000-6-2 EMC standards.
Product Description
RS PRO 225-7388 is a microprocessor-based 3-phase voltage monitoring relay designed to ensure the safety and operational performance of industrial electrical equipment by monitoring the presence and quality of the voltage supply.
The relay accepts connections from both 3-wire and 4-wire systems, measuring true RMS voltages either phase-to-phase or phase-to-neutral depending on wiring type, across selectable nominal voltage ranges including 380V, 400V, 415V for 3-wire, and 220V, 230V, 240V for 4-wire systems. It operates within a frequency range of 48 to 63 Hz and a supply voltage variation of 243 to 540 V AC.
The DPDT output relay reliably switches load circuits and is rated for AC1 (250V, 5A), AC15 (250V, 2A), and DC1 (25V, 5A) uses. The device’s 17.5mm slim DIN rail and surface mount housing facilitates easy integration into existing control panels while saving space.
Additional features include LED indicators - green for supply status and red for relay status - that provide clear operational feedback. The relay detects under-voltage conditions, phase loss, neutral loss, and incorrect phase sequence to prevent damage by disconnecting faulty supplies through external contactors.
The robust electrical design complies with IEC impulse withstand voltage and dielectric voltage standards, and the product meets CE, RoHS, and C-Tick certifications. This monitoring relay is suitable for use in industrial, automation, and HVAC applications requiring reliable phase monitoring and protection.
Compact DIN rail housing with surface mount capability. True RMS voltage measurement for accurate multi-phase monitoring. Adjustable trip level and time delay for customized protection. DPDT relay output rated for multiple AC and DC loads.
Clear LED indication of supply and relay status. Compliance with EMC and electrical safety standards. Designed for protection of equipment from electrical faults.
Choose RS PRO 225-7388 monitoring relay for dependable three-phase voltage monitoring and industrial equipment protection. Browse more industrial relays and components in the Electronics & Electricals category on EnvMart for comprehensive automation and control solutions.
Explore more products in our Monitoring Relays category.
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Frequently Asked Questions
This model supports 3-wire monitoring for nominal voltages of 380V, 400V, and 415V AC, and 4-wire monitoring for 220V, 230V, and 240V AC.
The DPDT output relay is rated for AC1 at 250V 5A, AC15 at 250V 2A, and DC1 at 25V 5A.
It operates within a frequency range of 48 to 63 Hz.
This unit can be mounted on DIN rail or surface mounted, providing flexibility for installation.
The relay has a compact width of 17.5mm, designed for space efficiency in control panels.
It is designed for 3-phase electrical systems, ensuring comprehensive monitoring of voltage supply.
It features green and red LED indicators that show supply status and relay status, respectively.
It protects against phase loss, neutral loss, under-voltage, and incorrect phase sequence to prevent equipment damage.
The relay has an IP rating of IP20, indicating its level of protection against solid objects and moisture.
This model is compliant with CE, RoHS, and C-Tick certifications, ensuring it meets relevant safety and environmental standards.
The electrical life of the relay is rated for at least 150,000 operations at its rated load.
It has a rated impulse withstand voltage of 4kV (1.2/50 μS), ensuring it can handle voltage spikes effectively.
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