{"product_id":"siemens-3rb1253-0fm40-solid-state-overload-relay-50-205a-3-poles-220-240v","title":"Siemens 3RB1253-0FM40 Solid-State Overload Relay 50–205A 3 Poles 220–240V","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe Siemens 3RB1253-0FM40 solid-state overload relay is a high-performance motor protection device widely sourced by industrial procurement teams, EPC contractors, and MRO buyers across global markets. Part of the Siemens 3RB12 series, this electronic overload relay integrates a current transformer module for accurate phase-current monitoring, ground fault detection, and overload protection in heavy-duty three-phase motor control applications. With an adjustable current range of 50–205A and Class 5–30 trip classification, it is suited for demanding industrial environments including manufacturing plants, process industries, and infrastructure projects. Available through WeSellStocks.co as surplus and wholesale industrial stock, this unit is ready for immediate procurement. Industrial buyers in the USA rely on Siemens 3RB series relays for reliable motor protection in control panels, while procurement teams in the UAE specify this product for automation and utilities projects. Worldwide shipping is available for single units and bulk orders.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e Siemens\u003cbr\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Solid-State Electronic Overload Relay with Current Transformer Module\u003cbr\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 3RB1253-0FM40\u003cbr\u003e\u003cstrong\u003eSeries:\u003c\/strong\u003e 3RB12\u003cbr\u003e\u003cstrong\u003eIndustry Category:\u003c\/strong\u003e Industrial Automation \/ Motor Control \u0026amp; Protection\u003cbr\u003e\u003cstrong\u003eControl Supply Voltage:\u003c\/strong\u003e AC 220–240V (terminals A1–A2)\u003cbr\u003e\u003cstrong\u003eCurrent Setting Range:\u003c\/strong\u003e 50–205A (adjustable via front dial)\u003cbr\u003e\u003cstrong\u003eTrip Class:\u003c\/strong\u003e Class 5, 10, 15, 20, 25, 30 (adjustable)\u003cbr\u003e\u003cstrong\u003eAnalog Output:\u003c\/strong\u003e 4–20mA (for current monitoring)\u003cbr\u003e\u003cstrong\u003eVoltage Rating (Ue):\u003c\/strong\u003e 690V AC\u003cbr\u003e\u003cstrong\u003eInsulation Voltage (Ui):\u003c\/strong\u003e 1000V\u003cbr\u003e\u003cstrong\u003eImpulse Withstand Voltage (Uimp):\u003c\/strong\u003e 8kV\u003cbr\u003e\u003cstrong\u003eAuxiliary Contact Rating — Overload:\u003c\/strong\u003e NC (95–96), NO (97–98)\u003cbr\u003e\u003cstrong\u003eAuxiliary Contact Rating — Ground Fault:\u003c\/strong\u003e NC (05–06), NO (07–08)\u003cbr\u003e\u003cstrong\u003eAuxiliary Contact Voltage (Ui):\u003c\/strong\u003e 300V\u003cbr\u003e\u003cstrong\u003eAuxiliary Contact Uimp:\u003c\/strong\u003e 4kV\u003cbr\u003e\u003cstrong\u003eAuxiliary Contact Current (AC15):\u003c\/strong\u003e 6A\/120V, 3A\/230V\u003cbr\u003e\u003cstrong\u003eAuxiliary Contact Current (DC13):\u003c\/strong\u003e 2A\/24V\u003cbr\u003e\u003cstrong\u003eFuse Type 1 Coordination:\u003c\/strong\u003e 400A gG\u003cbr\u003e\u003cstrong\u003eFuse Type 2 Coordination:\u003c\/strong\u003e 250A gG\u003cbr\u003e\u003cstrong\u003eCable Cross-Section (screw terminal):\u003c\/strong\u003e 2×0.5–2.5mm² \/ 1×0.5–4mm²\u003cbr\u003e\u003cstrong\u003eCable Cross-Section (ferrule terminal):\u003c\/strong\u003e 2×0.5–1.5mm² \/ 1×0.5–2.5mm²\u003cbr\u003e\u003cstrong\u003eTightening Torque (CT module):\u003c\/strong\u003e 10–14 Nm (89–124 lb.in)\u003cbr\u003e\u003cstrong\u003eTightening Torque (control terminals):\u003c\/strong\u003e 0.8–1.2 Nm (7–11 lb.in)\u003cbr\u003e\u003cstrong\u003eTerminal Kit:\u003c\/strong\u003e 3TX6526-3C\u003cbr\u003e\u003cstrong\u003eAux. Contactor Compatibility:\u003c\/strong\u003e R300, B300\u003cbr\u003e\u003cstrong\u003eStandards \/ Compliance:\u003c\/strong\u003e IEC 947-4-1, IEC 947-5-1, DIN VDE 0660 Teil 102, Teil 200, Teil 302\/303, IEC 34-11 Typ A, UL Listed 165C, CSA, CE\u003cbr\u003e\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Direct mounting \/ panel-mount with CT module (D48 frame)\u003cbr\u003e\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in Germany\u003cbr\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e Ground fault detection, 4–20mA analog output, Test\/Reset button, Ready \/ Gnd Fault \/ Overload LED indicators, monostable auxiliary contacts\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe Siemens 3RB1253-0FM40 is designed for motor overload and ground fault protection in three-phase industrial motor control circuits, typically installed within motor control centers (MCCs), main distribution panels, and automation control cabinets. It is compatible with large contactors and suitable for pumps, compressors, conveyors, fans, and other high-current motor-driven equipment in process plants, oil and gas facilities, and infrastructure projects. The integrated 4–20mA analog output enables remote current monitoring via PLC or SCADA systems, making it highly relevant for automated and instrumented environments. Procurement teams sourcing for maintenance, repair, and operations (MRO) or new installations will find this unit immediately deployable.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eWeSellStocks.co stocks the Siemens 3RB1253-0FM40 as part of a curated range of surplus and reconditioned Siemens motor protection devices available for industrial buyers and wholesale distributors. Procurement teams and automation engineers in the USA and UAE regularly source the 3RB12 series for panel builds, plant upgrades, and emergency MRO requirements. As a trusted global industrial supplier, WeSellStocks.co offers competitive pricing and worldwide shipping on Siemens overload relays and motor control components.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eMetafields:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003ebrand:\u003c\/strong\u003e Siemens\u003cbr\u003e\u003cstrong\u003epart_number:\u003c\/strong\u003e 3RB1253-0FM40\u003cbr\u003e\u003cstrong\u003eproduct_type:\u003c\/strong\u003e Solid-State Electronic Overload Relay with CT Module\u003cbr\u003e\u003cstrong\u003eindustry_category:\u003c\/strong\u003e Industrial Automation \/ Motor Control \u0026amp; Protection\u003cbr\u003e\u003cstrong\u003evoltage_rating:\u003c\/strong\u003e 690V AC (Ue); 1000V (Ui); 8kV (Uimp)\u003cbr\u003e\u003cstrong\u003ecurrent_rating:\u003c\/strong\u003e 50–205A (adjustable)\u003cbr\u003e\u003cstrong\u003epower_rating:\u003c\/strong\u003e Available upon request\u003cbr\u003e\u003cstrong\u003einput_voltage:\u003c\/strong\u003e AC 220–240V (control supply)\u003cbr\u003e\u003cstrong\u003eoutput_voltage:\u003c\/strong\u003e 4–20mA analog output\u003cbr\u003e\u003cstrong\u003emounting_type:\u003c\/strong\u003e Direct panel-mount with D48 CT module frame\u003cbr\u003e\u003cstrong\u003estandards:\u003c\/strong\u003e IEC 947-4-1, IEC 947-5-1, DIN VDE 0660, UL Listed, CSA, CE, Made in Germany\u003cbr\u003e\u003cstrong\u003econdition:\u003c\/strong\u003e Used \/ Surplus\u003cbr\u003e\u003cstrong\u003estock_quantity_available:\u003c\/strong\u003e Available upon request\u003cbr\u003e\u003cstrong\u003etarget_markets:\u003c\/strong\u003e USA | UAE | Worldwide\u003cbr\u003e\u003cstrong\u003eglobal_shipping:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003ch5 class=\"font-claude-response-body break-words whitespace-normal\"\u003econdition: used \u003c\/h5\u003e\n\u003ch5 class=\"font-claude-response-body break-words whitespace-normal\"\u003e\n\u003cspan class=\"selectable-text copyable-text xkrh14z\"\u003eTested\u003c\/span\u003e\u003cspan class=\"emoji x1rg5ohu x16dsc37 x19la9d6 x1fc57z9 x6ikm8r x10wlt62 x19co3pv x11tp94h xw4jnvo x1qx5ct2 xfibh0p xiy17q3 x1xsqp64 x1lkfr7t xexx8yu xyri2b x18d9i69 x1c1uobl\"\u003e\u003cspan class=\"xrtxmta x1bhl96m\"\u003e✅\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/h5\u003e","brand":"We Sell Stocks","offers":[{"title":"Default Title","offer_id":59487029657886,"sku":"cabin: A75- Henaz","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/7230\/1086\/files\/7_a599df25-0e7d-46a5-a871-850efb3a5150.png?v=1781875949","url":"https:\/\/wesellstocks.co\/products\/siemens-3rb1253-0fm40-solid-state-overload-relay-50-205a-3-poles-220-240v","provider":"We Sell Stocks","version":"1.0","type":"link"}