{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"WB1KB138","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"WB1KB138","canonicalUrl":"https://aoctrl.com/schneider/WB1KB138","factsUrl":"https://aoctrl.com/api/mcp/products/WB1KB138","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys WB1-K series, contactor coil WB1KB138, 415...440 V AC 50...400 Hz, low consumption type, obsolete.","salesMarkdown":"The Schneider Electric WB1KB138 is a replacement coil from the TeSys range, designed for contactors that accept the WB1-K coil platform. It is a low-consumption AC coil rated for 415...440 V AC at 50...400 Hz, with control circuit voltage limits of 319...405 V across that same frequency band. The coil draws 380...520 W inrush (450...620 VA) and holds at just 0.15...0.2 W (0.15...0.2 VA), which keeps the thermal load on the control transformer low during continuous operation. Sealed operating time is 25 ms, and mechanical durability is rated at 1,200,000 cycles. Maximum operating rate is 120 cycles per minute at 131 °F (55 °C). The coil's average resistance is 257 ohms at 68 °F (20 °C). Any integrator or panel builder with a legacy TeSys contactor needing this coil should verify the contactor frame accepts the WB1-K coil platform. The 415...440 V AC control voltage is non-standard for most modern panels. This coil is for legacy installations where the control circuit operates at that higher voltage range. The low-consumption hold-in power (0.15...0.2 W) means the coil stays cool in continuous duty, which extends the life of the contactor assembly and reduces heat buildup inside a sealed enclosure. The 1,200,000 mechanical cycles are typical for a contactor coil in this class — suitable for applications with moderate switching frequency, not high-speed cycling.","metaTitle":"Schneider TeSys WB1KB138 contactor coil, 415-440V AC, obsole","metaDescription":"WB1KB138 is a TeSys WB1-K contactor coil rated 415-440V AC 50-400Hz, low consumption type. Now obsolete — sourced to order against RFQ. 1.2M mechanical cycles, 25 ms sealed operati","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Reversing Contactors"],"specifications":{"Range":"TeSys","Category":"18402-WORLD SERVICE PARTS(CONTROL ACCESS)","Coil type":"Low consumption","Operating time":"25 ms sealed","lifecycle_stage":"current","Inrush power in W":"380...520 W 1P","Average resistance":"257 Ohm 68 °F (20 °C)","Inrush power in VA":"450...620 VA 1P","Control circuit type":"AC","Mechanical durability":"1200000 cycles","Nbr. of units in pkg.":"1","Maximum operating rate":"120 cyc/mn 131 °F (55 °C)","Product or Component Type":"Contactor coil","[Uc] control circuit voltage":"415...440 V AC 50...400 Hz","Control circuit voltage limits":"319...405 V at 50...400 Hz","Hold-in power consumption in W":"0.15...0.2 W 1P","Hold-in power consumption in VA":"0.15...0.2 VA 50...400 Hz 1P"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7e91d2668fce2773a4e55109a8da28d9.pdf","sourceUrl":"https://www.se.com/vn/en/product/WB1KB138/coil-wb1k-415-440v-ac-40-400-hz/","alternativesUrl":"https://aoctrl.com/api/mcp/products/WB1KB138/alternatives.json"},"ai":{"faq":[{"question":"What is the TeSys range for this part?","answer":"The WB1KB138 belongs to the Schneider Electric TeSys range, which is a family of contactors, motor starters, and control components for industrial motor control and switching applications."},{"question":"What is the category listed for WB1KB138?","answer":"The category is 18402-WORLD SERVICE PARTS(CONTROL ACCESS), which indicates this is a service/spare part for control circuits within Schneider Electric's global service parts classification."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/WB1KB138","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/WB1KB138 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}