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Specification & Description
| Specification | Description |
|---|---|
| Part Number | RM4JA32MW |
| Manufacturer | Schneider |
| Product Type | Current Measurement Relay |
| Relay Name | RM4J |
| Monitored Parameters | Overcurrent or undercurrent detection |
| Time Delay Type | Adjustable from 0.05 to 30 seconds |
| Measurement Range | 1 to 5 A current AC/DC, 3 to 15 A current AC/DC, 300 to 1500 mA current AC/DC |
| Contacts Type and Composition | 2 Changeover (C/O) |
| Maximum Switching Voltage | 440 V AC |
| Rated Supply Voltage | 24 to 240 V AC, 50/60 Hz +/- 5%, 24 to 240 V DC |
| Control Circuit Voltage Limits | 0.85 to 1.1 times the rated supply voltage (Uc) |
| Power Consumption | 3.3 VA AC, 1.2 W DC |
| Measuring Cycle | Less than or equal to 80 ms |
| Internal Input Resistance | 0.006 Ohm, 0.02 Ohm, 0.06 Ohm |
| Permissible Continuous Overload | 2 A, 7 A, 20 A |
| Permissible Non-Repetitive Overload | 10 A for <= 3 s, 15 A, 100 A |
| Setting Accuracy of the Switching Threshold | +/-5% |
| Switching Threshold Drift | <= 0.06% per degree centigrade depending on permissible ambient air temperature |
| Hysteresis | 5 to 30% adjustable of current threshold setting |
| Mounting Type | DIN Rail Mount |
| Dimensions | 45 x 80 x 78 mm |
| Contacts Material | 90/10 silver nickel contacts |
| IP Degree of Protection | IP20 (terminals), IP50 (casing) |
| Pollution Degree | 3 conforming to IEC 60664-1 |
| Operating Position | Any position without derating |
| Connections - Terminals | Screw terminals for cables |
| Mechanical Durability | 30 million cycles |
| Rated Operational Current | 2 A at 24 V DC, 3 A at 115 V AC, 3 A at 250 V AC, 0.1 A at 250 V DC |
The Schneider RM4JA32MW is a versatile current measurement relay designed for industrial monitoring and control applications. This robust relay is part of the Zelio Control range and is engineered to detect overcurrent or undercurrent conditions, ensuring reliable operation and protection of electrical systems. With an adjustable time delay feature ranging from 0.05 to 30 seconds, it offers flexibility to suit various application requirements.
The RM4JA32MW has a measurement range that can accommodate currents from 1 to 5 A for both AC and DC, as well as a broader range of 3 to 15 A, making it suitable for a wide array of monitoring tasks. The relay is equipped with two changeover (C/O) contacts, providing the necessary output for control and signalling purposes.
This current measurement relay is designed for DIN rail mounting, making it easy to install in standard enclosures. Its compact dimensions of 45 x 80 x 78 mm allow for efficient use of space inside control panels. The relay's maximum switching voltage is rated at 440 V AC, and it has a rated supply voltage of 24 to 240 V AC/DC, accommodating a broad range of supply voltages for global applications.
The RM4JA32MW is built to last, with a mechanical durability of 30 million cycles, and features screw terminals for secure and reliable connections. It is designed to operate in any position without derating, ensuring consistent performance regardless of installation orientation.
With its combination of adjustable settings, wide measurement range, and durable construction, the Schneider RM4JA32MW current measurement relay is a reliable choice for industrial monitoring and control applications where precision and longevity are paramount.
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Frequently Asked Questions
What is the function of this current measurement relay?
The Schneider current measurement relay is designed to monitor electrical circuits for overcurrent or undercurrent conditions, providing protection and control. It can be adjusted to trigger a response when current levels fall outside of a specified range.
Can this relay be used for both AC and DC current measurements?
Yes, this relay is capable of measuring both AC and DC currents within its specified measurement range.
What are the time delay options available for this relay?
The relay offers an adjustable time delay ranging from 0.05 to 30 seconds, allowing for customisation based on the specific application requirements.
How is the current measurement range of this relay defined?
The relay has multiple current measurement ranges, including 1 to 5 A, 3 to 15 A for both AC and DC, and 300 to 1500 mA for AC and DC, providing versatility for different monitoring scenarios.
What type of contacts does this relay have?
The relay is equipped with 2 changeover (C/O) contacts, which can be used to switch between two circuits, depending on the measured current.
What is the maximum switching voltage for this relay?
The maximum switching voltage for the relay is rated at 440 V AC, which is suitable for a wide range of industrial applications.
What are the dimensions of this relay for mounting purposes?
The relay has dimensions of 45 x 80 x 78 mm, making it suitable for DIN rail mounting in standard industrial enclosures.
How can I adjust the current threshold setting on the relay?
The current threshold setting can be adjusted on the relay itself, with a hysteresis range of 5 to 30% of the current threshold setting, allowing for precise control of the switching point.
What is the rated insulation voltage of this relay?
The rated insulation voltage (Ui) for the relay is 500 V, conforming to IEC standards, which helps to ensure safe operation within electrical systems.
What is the mechanical durability of this relay?
The relay boasts a mechanical durability of 30 million cycles, indicating its ability to withstand a high number of operations over its lifespan.
