{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"WB1KB155","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"WB1KB155","canonicalUrl":"https://aoctrl.com/schneider/WB1KB155","factsUrl":"https://aoctrl.com/api/mcp/products/WB1KB155","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys series, WB1KB155 low-consumption contactor coil, 47...51 V DC control circuit, obsolete.","salesMarkdown":"The Schneider Electric TeSys WB1KB155 is a low-consumption contactor coil designed for the TeSys range of contactors. It operates on a 47...51 V DC control circuit, drawing an inrush power of 380...520 W and holding in at just 0.15...0.2 W. The sealed operating time is 25 ms, and it is rated for 1,200,000 mechanical cycles at a maximum operating rate of 120 cycles per minute at 131 °F (55 °C). The 47...51 V DC control voltage is a narrow band — verify your control supply sits within that range, not just nominally 48 V. The low-consumption design (0.15...0.2 W hold-in) means minimal heat dissipation in the panel, but the inrush spike at 380...520 W still needs a power supply that can deliver that transient without droop. The 25 ms sealed operating time is typical for a contactor coil; it governs how fast the main contacts close, which matters for sequence timing in a motor starter.","metaTitle":"Schneider TeSys WB1KB155 Contactor Coil, 47-51 V DC, Obsolet","metaDescription":"Schneider Electric TeSys WB1KB155 low-consumption contactor coil, 47-51 V DC control circuit. Obsolete — sourced to order against RFQ. 25 ms sealed operating time, 1.2M mechanical","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","Heat dissipation":"7...10 W 1P","Inrush power in W":"380...520 W 1P","Average resistance":"4.96 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":"47...51 V DC","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/addf4808ff9e2edb7fecde27b1526f6d.pdf","sourceUrl":"https://www.se.com/ie/en/product/WB1KB155/coil-wb1k-low-consumption-47-51-v-dc/","alternativesUrl":"https://aoctrl.com/api/mcp/products/WB1KB155/alternatives.json"},"ai":{"faq":[{"question":"What is the closest alternative to the WB1KB155?","answer":"There is no official successor order code listed for this coil. A direct replacement would need to match the 47...51 V DC control voltage, low-consumption coil type, and TeSys mounting footprint. Without a manufacturer-specified cross-reference, verify fit by comparing the control circuit voltage and mechanical interface against any candidate part."},{"question":"What compliance documentation is available for the WB1KB155?","answer":"The evidence does not list specific compliance certifications (RoHS, REACH, UL, IEC) for this part. As an obsolete service part, original documentation may be limited; request any available certificates when sourcing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/WB1KB155","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/WB1KB155 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}}