{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"RM4JA01M","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"RM4JA01M","canonicalUrl":"https://aoctrl.com/schneider/RM4JA01M","factsUrl":"https://aoctrl.com/api/mcp/products/RM4JA01M","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Harmony RM4J series, RM4JA01M current measurement relay, 0.3...1000 mA AC/DC, 1 C/O output, 250 V AC switching, IP20/IP50, DIN rail.","salesMarkdown":"## What this relay does on the line The RM4JA01M is a current measurement relay from the Harmony RM4J family, designed to monitor AC or DC current and trip its output when the measured current exceeds the set threshold. It covers three switchable ranges: 0.3...30 mA, 10...100 mA, and 100...1000 mA, for both AC (50/60 Hz) and DC — so one relay handles low-level leakage, intermediate loop currents, and higher motor-phase draws without swapping modules. The single changeover contact (1 C/O) switches up to 250 V AC, with a maximum switching voltage of 440 V AC — enough to drive a PLC input or a small contactor coil directly. ## Panel fit and environmental rating The relay occupies a 23 mm wide DIN-rail footprint (0.9 in), 80 mm deep, 78 mm tall — fits standard 35 mm rail alongside contactors and terminal blocks. IP20 at the terminals, IP50 on the casing — protected against dust ingress and finger-safe, but not rated for washdown; keep it inside a sealed enclosure if the panel sees hose spray or condensation. Rated for pollution degree 3 per IEC 60664-1, meaning it tolerates conductive dust and occasional condensation typical in industrial control cabinets. ## Lifecycle and sourcing reality It is designed and tested to EN/IEC 60255-6 (measuring relays and protection equipment), with dielectric test voltage of 2.5 kV and immunity to fast transients at 2 kV level 3 per IEC 61000-4-4.","metaTitle":"Schneider RM4JA01M Current Measurement Relay","metaDescription":"Schneider Electric RM4JA01M Harmony current measurement relay, 0.3...1000 mA AC/DC, 1 C/O output, IP20/IP50. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["General Purpose Relays"],"specifications":{"Depth":"3.1 in (80 mm)","Width":"0.9 in (23 mm)","title":"RM4JA01M","Height":"3.07 in (78 mm)","Category":"22376-RELAYS-MEASUREMENT(RM4)","Standards":"EN/IEC 60255-6","Relay Type":"Current measurement relay","Relay name":"RM4J","description":"current measurement relay RM4-J - range 3..1000 mA - 220..240 V AC","9 Mm Pitches":"2.5","Output contacts":"1 C/O","Time delay type":"Without","lifecycle_stage":"current","Number of cables":"2","Pollution degree":"3 IEC 60664-1","Range of Product":"Harmony Relay","Shock resistance":"15 gn 11 ms IEC 60255-21-1","Contacts material":"90/10 silver nickel contacts","Measurement range":"0.3...30 mA current AC 50/60 Hz 0.3...30 mA current DC 10...100 mA current AC 50/60 Hz 10...100 mA current DC 100...1000 mA current AC 50/60 Hz 100...1000 mA current DC","Relative humidity":"15...85 % IEC 60721-3-3","Switching voltage":"250 V AC","Tightening torque":"5.3...9.7 lbf.in (0.6...1.1 N.m)","Operating position":"Any position without derating","Output relay state":"Tripped if V measured > V set Tripped if A measured > A set","Mechanical durability":"30000000 cycles","Nbr. of units in pkg.":"1","Connections - terminals":"Screw terminals, 2 x 1.5 mm²flexible with cable end Screw terminals, 2 x 2.5 mm²flexible without cable end","Dielectric test voltage":"2.5 kV","IP degree of protection":"IP20 IEC 60529 terminals) IP50 IEC 60529 casing)","Maximum measuring cycle":"80 ms","Switching capacity in mA":"10 mA 12 V","Internal input resistance":"10 Ohm 1 Ohm 33 Ohm","Maximum switching voltage":"440 V AC","Product or Component Type":"Industrial measurement and control relays","Switching threshold drift":"0.1 Uc","Non-dissipating shock wave":"4.8 kV","Relay monitored parameters":"Overcurrent detection","Operating Voltage Tolerance":"0.85...1.1 Uc","Environmental characteristic":"3K3","Contacts type and composition":"1 C/O","Electromagnetic compatibility":"Electrostatic discharge - test level: 6 kV level 3 (contact discharge) conforming to IEC 61000-4-2 Electrostatic discharge - test level: 8 kV level 3 (air discharge) conforming to IEC 61000-4-2","Resistance to fast transients":"2 kV IEC 61000-4-4 level 3","Disturbance radiated/conducted":"CISPR 22 - class A CISPR 11 group 1 - class A","Terminals description ISO n°1":"(15-16-18)OC (C-B1-B2-B3)CO (A1-A2)CO","[Ie] rated operational current":"2 A 24 V DC-13 158 °F (70 °C) IEC 60947-5-1/1991 2 A 24 V DC-13 158 °F (70 °C) VDE 0660 3 A 115 V AC-15 158 °F (70 °C) IEC 60947-5-1/1991 3 A 115 V AC-15 158 °F (70 °C) VDE 0660 3 A 24 V AC-15 158 °F (70 °C) IEC 60947-5-1/1991 3 A 24 V AC-15 158 °F (70 °C) VDE 0660 3 A 250 V AC-15 158 °F (70 °C) IEC 60947-5-1/1991 3 A 250 V AC-15 158 °F (70 °C) VDE 0660 0.1 A 250 V DC-13 158 °F (70 °C) IEC 60947-5-1/1991 0.1 A 250 V DC-13 158 °F (70 °C) VDE 0660 0.3 A 115 V DC-13 158 °F (70 °C) IEC 60947-5-1/1991 0.3 A 115 V DC-13 158 °F (70 °C) VDE 0660","Maximum power consumption in VA":"3.5 VA AC","Permissible continuous overload":"1.5 A 0.15 A 0.05 A","Protection against electric shocks":"2 kV level 3 IEC 61000-4-5","Ambient Air Temperature for Storage":"-40...185 °F (-40...85 °C)","Permissible non repetitive overload":"5 A 0.2 A 0.5 A","Resistance to electromagnetic fields":"9.1 V/m (10 V/m) IEC 61000-4-3 level 3","Ambient air temperature for operation":"-4...149 °F (-20...65 °C)","Resistance to electrostatic discharge":"6 kV contact IEC 61000-4-2 level 3 8 kV air IEC 61000-4-2 level 3","Setting accuracy of the switching threshold":"+/-5 %","[Ith] conventional free air thermal current":"8 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$715.57","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/ie/en/product/RM4JA01M/current-measurement-relay-rm4j-range-3-1000-ma-220-240-v-ac/"},"ai":{"faq":[{"question":"Where can I buy RM4JA01M and how do I get a price?","answer":"The RM4JA01M is sourced and quoted to order against your BOM through independent distribution. Submit an RFQ for current pricing and availability."},{"question":"What is the closest pin-compatible alternative to RM4JA01M in this General Purpose Relays family?","answer":"The Harmony RM4J series includes other current ranges and functions, but a direct drop-in replacement is not documented."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/RM4JA01M","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/RM4JA01M when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}