Purchase now: Schneider Electric RM35JA32MR Current Relay
Purchase now: Atlantech Drives provides you the Schneider Electric RM35JA32MR, a precise Modular Measurement and Control Relay from the Zelio Control range. This device is designed to monitor AC or DC currents in the range of **0.15 A to 15 A**. It acts as a safety watchdog for your motors and electrical loads, detecting both **Overcurrent** (jammed conveyor, bearing failure) and **Undercurrent** (broken belt, dry running pump) conditions before catastrophic damage occurs.
Technical Specifications and Functionality
The RM35JA32MR is housed in a compact 35mm DIN-rail enclosure (NFC form factor). It features **True RMS** measurement, ensuring accuracy even with non-sinusoidal waveforms found in VFD-driven circuits. It offers **2 Changeover (CO) Output Relays** rated at 5A. The thresholds for «Imin» and «Imax» are independently adjustable via front-panel dials, along with a configurable **Time Delay (0.3…30 s)** to filter out startup inrush currents.
- Part Number: RM35JA32MR.
- Series: Zelio Control (RM35).
- Measurement Range: 0.15…15 A (AC/DC).
- Supply Voltage: 24…240 V AC/DC.
- Output: 2 C/O (SPDT) relays.
- Function: Overcurrent / Undercurrent (Window mode).
- Accuracy: +/- 10% of full scale.
- Width: 35 mm.
Expert Tips: The Hysteresis Setting
Prevent relay chattering with proper hysteresis. Expert Tip: This unit has a fixed or adjustable hysteresis depending on the range selected. Hysteresis ensures that if you set the trip at 10A, the relay won’t reset until the current drops to approx. 9.5A (5% drop). This prevents the output from oscillating rapidly («chattering») if the load current hovers right at the threshold, protecting your downstream contactors.
Frequently Asked Questions (FAQs)
Q: Can I measure currents above 15A?
A: Not directly. However, you can use a current transformer (CT) with a 5A secondary (e.g., 100/5A) and feed that into the RM35JA32MR, then scale your settings accordingly.
Q: Does it have a memory latch?
A: Yes, you can configure the «Memory» switch. In Memory mode, once a fault is detected, the relay stays tripped until power is cycled, which is critical for safety checks.
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