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To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | Schneider Electric |
| Manufacturer Product Number | RM22JA21MR |
| Description | Current Monitor Relay; Overcurrent detection; 4 mA...1 A AC/DC, 50/60 Hz |
| Datasheet | Download Datasheet |
The Schneider Electric RM22JA21MR is a 22.5 mm current monitor relay with 2 Form C (DPDT) output and rated 8 A, 250 V AC max; 2000 VA, driven by a 24 to 240 V AC/DC, 50/60 Hz input.
It watches the monitored current for overcurrent detection.
The current is sensed by a direct input; 2.5 ω (E1-M), 0.5 ω (E2-M), 0.1 ω (E3-M) across terminals.
Its trip point adjusts anywhere across 4 mA to 1 A AC/DC, 50/60 Hz.
It begins sensing 300 ms after power is applied.
It has 35 mm DIN rail mounting and screw terminals.
| Category | |
| Manufacturer | Schneider Electric |
| Monitoring Function | Overcurrent detection |
| Sensor Type | Direct input; 2.5 Ω (E1-M), 0.5 Ω (E2-M), 0.1 Ω (E3-M) across terminals |
| Current Range | 4 mA...1 A AC/DC, 50/60 Hz |
| Pickup Current Setting | Adjustable threshold, 10...100% of the selected range |
| Input Voltage | 24...240 V AC/DC, 50/60 Hz |
| Input Operating Range | 20.4...264 V AC/DC |
| Sensing Delay on Power-Up | 300 ms |
| Setting Accuracy | Threshold ±10% of full scale |
| Hysteresis | 5...50% adjustable threshold setting |
| Reset Delay | 1500 ms (at maximum voltage) |
| Status Indicator | Yellow LED: relay on; Green LED: power on |
| Contact Configuration | 2 Form C (DPDT) |
| Number of Poles | 2 |
| Output Rating | 8 A, 250 V AC max; 2000 VA |
| Mounting Type | 35 mm DIN rail |
| Module Width (mm) | 22.5 |
| Termination Style | Screw Terminal |
| Dimensions | 90 x 22.5 x 73 mm (3.5 x 0.9 x 2.9 in), H x W x D |
| Rated Power | 3.5 VA, 1.5 W DC |
| Operating Temperature (Storage) | -20...+50 (60 Hz); -20...+60 (50 Hz) °C (-40...+70 °C) |
| Mechanical Life | 10,000,000 (100,000) |
| Approvals | UL, CSA, CCC, EAC, GL, RCM |
| Standards | IEC 60255-1 |