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Brand: Schneider Electric
Schneider Electric RM22JA31MR RM22-JA 4 mA-1 A current relay
Description
RM22JA31MR: RM22JA current control relay in the Harmony range
The RM22JA31MR is a Schneider Electric Harmony current control relay from the RM22 family, built to supervise overcurrent or undercurrent detection and overcurrent or undercurrent in window mode. It is powered from a separate 24–240 V AC/DC 50/60 Hz supply, offers 2 changeover output contacts, and is housed in a 22.5 mm wide DIN-rail case. Seven Star LLC supplies the RM22JA31MR in Oman and the GCC as an independent supplier based in Muscat.
The datasheet we reviewed is dated 8 Nov 2026. It describes a unit with a test button on the front panel.
Technical specifications of the RM22JA31MR
| Parameter | Specification |
|---|---|
| Manufacturer / part number | Schneider Electric / RM22JA31MR |
| Relay type | Current control relay |
| Relay name | RM22JA |
| Monitored parameters | Overcurrent or undercurrent detection; Overcurrent or undercurrent in window mode |
| Control type | With test button |
| Contacts | 2 C/O |
| [Us] rated supply voltage | 24–240 V AC/DC 50/60 Hz, non self-powered |
| Supply voltage limits | 20.4–264 V AC/DC |
| Maximum power consumption | 3.5 VA; 1.5 W DC |
| Measurement range | 4 mA–1 A current AC/DC 50/60 Hz |
| Hysteresis | 5–50 % adjustable of threshold setting; 3 % fixed of full scale for window mode |
| Setting accuracy of the switching | ± 10 % of the full scale threshold |
| Repeat accuracy | ± 0.5 % for input and measurement circuit; ± 0.2 % for time delay |
| Time delay type | Adjustable 0.1–30 s, ± 10 % of the full scale value Tt- time delay upon fault |
| Setting accuracy of time delay | 10 % |
| Reset time | 1500 ms at maximum voltage |
| Response time | ≤ 500 ms |
| Power-on delay | 300 ms |
| Nominal output current | 8 A |
| Maximum switching voltage | 250 V AC |
| Switching capacity in VA | 2000 VA |
| Minimum switching current | 10 mA at 5 V DC |
| Maximum switching current | 8 A AC |
| Electrical durability | 100000 cycles |
| Mechanical durability | 10000000 cycles |
| Operating voltage tolerance | – 15 % + 10 % Un |
| Resistance across terminals | 2.5 Ω at E1-M terminals; 0.5 Ω at E2-M terminals; 0.1 Ω at E3-M terminals |
| Threshold setting | 10–100 % |
| Standards | IEC 60255-1 |
| Product certifications | CSA, CE, EAC, CCC, GL, RCM, UL |
| Relative humidity | 93–97 % at 25–55 °C conforming to IEC 60068-2-30 |
| IP degree of protection | IP20 (terminals) conforming to IEC 60529; IP40 (housing) conforming to IEC 60529; IP50 (front panel) conforming to IEC 60529 |
| Pollution degree | 3 conforming to IEC 60664-1 |
| Overvoltage category | III conforming to IEC 60664-1 |
| Insulation resistance | > 100 MΩ at 500 V DC conforming to IEC 60255-27 |
| Connections – terminals | Screw terminals, 2 × 0.5–2 × 2.5 mm² (20 AWG–14 AWG) solid without cable end; Screw terminals, 2 × 0.2–2 × 1.5 mm² (24 AWG–16 AWG) flexible with cable end; Screw terminals, 1 × 0.5–1 × 3.3 mm² (20 AWG–12 AWG) solid without cable end; Screw terminals, 1 × 0.2–1 × 2.5 mm² (24 AWG–14 AWG) flexible with cable end |
| Tightening torque | 0.6–1 N.m conforming to IEC 60947-1 |
| Housing material | Polycarbonate |
| Local signalling | LED (yellow) for relay ON; LED (green) for power ON |
| Mounting support | 35 mm DIN rail conforming to IEC 60715 |
| Storage temperature | -40 to 70 °C |
| Operating temperature | -20 to 50 °C at 60 Hz and -20 to 60 °C at 50 Hz |
| Width | 22.5 mm |
| Height / depth | 90 mm / 73 mm |
| Net weight | 0.11 kg |
| Packing | 1 piece, 121 g; 40 pieces in the second package level |
| Country of origin | Indonesia |
| Warranty | 18 months |
Settings, measurement and timing of the RM22JA31MR
The measuring range is 4 mA–1 A current AC/DC 50/60 Hz. Thresholds are set as 10–100 %. Time delay: Adjustable 0.1–30 s, ± 10 % of the full scale value Tt- time delay upon fault. Hysteresis is 5–50 % adjustable of threshold setting and 3 % fixed of full scale for window mode. Response time: ≤ 500 ms. Reset time is listed as 1500 ms at maximum voltage.
When commissioning the RM22JA31MR, set the thresholds against the real running values of the plant, not against the nameplate alone. Where an adjustable fault delay is available, a longer time suits starting transients and short disturbances, while a short time protects equipment faster. Note the dial positions on the commissioning sheet so the settings can be restored after maintenance.
Selection checklist for the RM22JA31MR
- Rated current range and whether the conductor passes through the relay or a current transformer is required.
- Whether you need overcurrent, undercurrent or window supervision.
- Control supply voltage.
- Time delay and start-up inhibition needs.
- Width 22.5 mm on the rail and enclosure space.
- Approvals and temperature limits against the project specification.
What the RM22JA31MR monitors
According to the datasheet, this relay covers the following functions. Each one is explained in practical terms below.
- Overcurrent or undercurrent detection. One threshold can be used either as a maximum or as a minimum. A high setting warns of an overloaded drive, while a low setting reveals a load that has fallen away, for example a pump running dry, a broken belt or a heater element that has failed.
- Window mode. Two limits are set around the normal operating current, and the output changes when the measured current leaves the band on either side. A fixed hysteresis keeps the output from chattering near an edge.
Installing and commissioning the RM22JA31MR
The relay clips onto a 35 mm DIN rail. The datasheet lists the operating position as any. Terminals are screw type: Screw terminals, 2 × 0.5–2 × 2.5 mm² (20 AWG–14 AWG) solid without cable end; Screw terminals, 2 × 0.2–2 × 1.5 mm² (24 AWG–16 AWG) flexible with cable end. Tightening torque is 0.6–1 N.m conforming to IEC 60947-1.
Before energising the RM22JA31MR, check the nameplate range against the supply and compare the wiring with the diagram on the datasheet and on the side of the housing. Switch on and confirm the green supply LED and the output indication. Then provoke the monitored fault in a safe way, for example by removing a fuse on a spare circuit or by simulating the condition, and confirm that the output behaves as intended. The test and reset button can help here.
Where the RM22JA31MR is used in Oman and the GCC
Typical uses include pumps, compressors and conveyors where a rising current signals a blocked line, a worn bearing or a jammed drive, and a falling current signals a dry run or a broken coupling. It is also found in fans, mixers and dosing pumps in water and utility plants, where the load current is a cheap indicator that the process is really moving, and in heater banks and heat tracing, where a missing or reduced current shows a failed element before the temperature drifts. Heat, dust, humidity and unstable supplies make supervision relays a low-cost way to protect larger equipment, but project specifications and local rules decide which protection is required.
Environment, insulation and approvals for the RM22JA31MR
Storage is listed at -40 to 70 °C. Operation is listed at -20 to 50 °C at 60 Hz and -20 to 60 °C at 50 Hz. Relative humidity is 93–97 % at 25–55 °C conforming to IEC 60068-2-30. Protection is IP20 (terminals) conforming to IEC 60529, pollution degree 3 conforming to IEC 60664-1. The housing is polycarbonate.
Certifications listed on the datasheet for this reference: CSA, CE, EAC, CCC, GL, RCM, UL. Check the marks against your project specification, because requirements differ between sites.
In a closed panel in an Omani summer the air near the relay can be much hotter than the room, so leave space around it and keep it away from contactors and power resistors.
Information to send with an RFQ for the RM22JA31MR
- Exact reference RM22JA31MR and quantity.
- Supply voltage, frequency and type of network.
- The load or machine being supervised and the required alarm or trip behaviour.
- Required contact arrangement and rating.
- Related relays, sockets or accessories needed on the same order.
- Delivery location and timeline.
Documents and quotation
The Schneider Electric datasheet for the RM22JA31MR is attached on this page and holds the complete specification summarised above, as printed on the manufacturer’s document dated 8 Nov 2026.
Send us the reference RM22JA31MR, quantity and delivery location and Seven Star LLC will reply to your request. We supply as an independent supplier based in Muscat and do not act for the manufacturer.
Datasheets & Documents
- Datasheet Schneider Electric RM22JA31MR Datasheet Download
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About brand
Schneider Electric is the French group for energy management and industrial automation: low and medium voltage switchgear and circuit breakers, motor control, drives, PLCs, power monitoring, UPS systems and building management. Its history goes back to 1836, when the brothers Adolphe and Eugène Schneider took over the iron and steel works at Le Creusot in Burgundy. Over the 20th century the company left steel and heavy engineering and became an electrical group through acquisitions such as Merlin Gerin, Télémécanique, Square D and Modicon. Its head office is in Rueil-Malmaison near Paris, and its shares are listed on Euronext Paris.
Schneider Electric company profile
| Origins | 1836, Le Creusot, France: Adolphe and Eugène Schneider take over the Le Creusot foundry |
|---|---|
| Headquarters | Rueil-Malmaison (Paris region), France |
| Ownership | Public company listed on Euronext Paris |
| Key acquisitions | Télémécanique (1988), Square D (1991), Merlin Gerin (1992), Modicon (1997), APC (2007), Invensys (2014); majority owner of AVEVA software |
| Brand names still in use | Acti9, ComPacT and MasterPacT breakers, TeSys motor control, Altivar drives, Altistart soft starters, Modicon PLCs, Harmony control components, PowerLogic and Easergy protection and metering, APC UPS, EcoStruxure software platform |
| Product families | Low voltage distribution, medium voltage switchgear and protection relays, motor control and drives, PLCs and HMIs, power meters, UPS and cooling, enclosures, building automation and energy software |
Milestones
- 1836: The Schneider brothers acquire the Le Creusot works; the business grows in steel, locomotives and heavy engineering.
- 1975: First investment in Merlin Gerin, a French maker of electrical distribution equipment.
- 1988–1992: Télémécanique, Square D (USA) and Merlin Gerin join the group, making it an electrical specialist.
- 1997: Modicon, the company behind the first programmable logic controller, joins the group.
- 1999: The group takes the name Schneider Electric.
- 2007 and 2014: APC (UPS and data centre power) and Invensys (process automation) are acquired.
Choosing Schneider Electric breakers and motor control
Circuit breakers are chosen by current and breaking capacity. Acti9 miniature circuit breakers (iC60, C120) protect final circuits up to 125 A. ComPacT NSX molded case breakers cover about 16 to 630 A, and the letter after the frame size sets the breaking capacity: B, F, N, H, S, L from lowest to highest. MasterPacT air circuit breakers are used as main incomers on large switchboards. For motors, a TeSys contactor with an LRD overload relay or a GV2 motor circuit breaker suits direct starting, an Altistart soft starter reduces starting current, and an Altivar drive controls speed. The breaking capacity must always be at least the prospective short-circuit current at the point of installation.
Where Schneider Electric products are used
In Oman and the GCC, Schneider Electric equipment is found in main and sub-main switchboards of commercial and residential buildings, motor control centres in water, oil and gas and industrial plants, substations protected by Sepam and Easergy relays, data centres powered by Galaxy and APC UPS systems, and buildings controlled by EcoStruxure Building Operation.
APC by Schneider Electric: UPS and critical power
Since 2007, APC has been part of Schneider Electric and is now its product brand for uninterruptible power supplies, replacement batteries, battery packs, network management cards and rack power distribution. Our APC catalogue covers Smart-UPS line-interactive and on-line models, Easy UPS On-Line, the modular Symmetra LX, RM and PX ranges, Silcon three-phase systems and their spare part kits, and the RBC cartridges that keep them running. Schneider Electric breakers, drives and PLCs can be quoted together with APC UPS systems in one request.
Schneider Electric products we list
| Family | Examples |
|---|---|
| Circuit breakers | Acti9 iC60N, C120N, NSX100F, NSX250N, NSX630, EasyPact EZC, MasterPacT MTZ1, MasterPacT NW |
| Motor control | TeSys Deca LC1D, TeSys F, LRD overload relay, GV2ME08, Altistart 22, Altistart 480 |
| Drives | Altivar 12, Altivar 320, ATV340, Altivar Process 630, ATV930, Lexium 32 servo |
| PLCs, HMIs and relays | Modicon M221, M241, M580 BMEP582040, Zelio Logic, Magelis HMISTU655 |
| Protection, metering and power | Sepam series 20, Easergy P3U30, MiCOM P139, PM5560, iEM3255, Galaxy VS UPS |
Ordering Schneider Electric products: what we need
Send the commercial reference from the label (for example LC1D18M7 or ATV320U22N4C). For breakers, confirm the rated current, number of poles, breaking capacity and trip unit. For contactors, give the coil voltage. For drives, give the motor power and supply voltage. APC products are listed on their own brand page.
Facts checked against Schneider Electric's published company history, October 2026.
Browse Schneider Electric products by category: Circuit Breaker, Electrical & Power Modules, AC Drives, PLC & I/O Cards, Metering Systems, UPS and Batteries.
FAQ
Questions about the Schneider Electric RM22JA31MR RM22-JA 4 mA-1 A
Answers from our engineering team on installation, compatibility and integration.
01What does the RM22JA31MR monitor?
It is the RM22JA Harmony control relay for overcurrent or undercurrent detection and overcurrent or undercurrent in window mode. See the functions list on this page for how each one works.
02What supply and measuring range does the RM22JA31MR have?
The datasheet lists the supply as 24...240 V AC/DC 50/60 Hz, non self-powered with limits of 20.4…264 V AC/DC, and a measurement range of 4 mA...1 A current AC/DC 50/60 Hz.
03What output does the RM22JA31MR provide?
The output is 2 C/O contacts, rated 8 A nominal at up to 250 V AC. Electrical durability is listed as 100000 cycles and mechanical durability as 10000000 cycles.
04How is the RM22JA31MR mounted and what size is it?
It clips onto a 35 mm DIN rail and measures 22.5 mm wide, 90 mm high and 73 mm deep. Terminals are screw type, tightened to 0.6…1 N.m conforming to IEC 60947-1.
05What environment is the RM22JA31MR rated for?
Operation is listed at -20 to 50 °C at 60 Hz and -20 to 60 °C at 50 Hz, storage at -40 to 70 degrees C, relative humidity 93…97 % at 25…55 °C conforming to IEC 60068-2-30 and protection IP20 (terminals) conforming to IEC 60529.
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