{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1901-3BA00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1901-3BA00","canonicalUrl":"https://aoctrl.com/siemens/3RK1901-3BA00","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1901-3BA00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RK1901-3BA00 AS-Interface support module, 54 mm wide, for load feeder module on 40 mm busbar with PE and neutral conductor connection.","salesMarkdown":"The Siemens 3RK1901-3BA00 is an AS-Interface support module designed for load feeder modules, providing a 54 mm wide mounting base with integrated PE and neutral conductor connection for a busbar with 40 mm center-line spacing. This is a mechanical and wiring interface — it does not contain switching electronics itself, but rather supports the physical mounting and power distribution for an AS-Interface load feeder module in a panel. The 54 mm width is designed to match the footprint of a standard Siemens S0 contactor, so it aligns cleanly on a DIN rail alongside SIRIUS devices in a motor control center layout. Mounts directly onto a busbar with 40 mm center-line spacing — this is the standard Siemens busbar pitch for their SIRIUS 3RT contactor range, so it integrates without adapter plates in a pre-bussed panel. The PE and neutral conductor connection is built into the module body, saving a separate terminal block for the protective earth and neutral rail in the AS-Interface load feeder circuit. ## Required companion part This module requires the 3RK1901-0EA power connector set — that is the separate order code for the plug-in power terminals that carry the busbar voltage to the load feeder module. Without it, the module has no electrical connection to the busbar.","metaTitle":"Siemens 3RK1901-3BA00 AS-Interface Support, 54mm, PE/N Busba","metaDescription":"Siemens 3RK1901-3BA00 AS-Interface support module, 54 mm wide, for load feeder on 40 mm busbar with PE/N. Current lifecycle. Requires 3RK1901-0EA connector set.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Width":"54mm","title":"3RK1901-3BA00","Note 1":"3RK1901-0EA power connector set required","Version":"with PE and neutral conductor connection, for mounting on a busbar with 40 mm center-line spacing","description":"AS-Interface support 54 mm wide for load feeder module for 40 mm busbar adapter with PE and N conductor connection","lifecycle_stage":"current","Design Of The Product":"Support for AS-Interface load feeder module"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2506c84bc50fd54eb200b0e325c9c833.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=319939&mlfb=3RK1901-3BA00"},"ai":{"faq":[{"question":"What is the width of 3RK1901-3BA00?","answer":"The width is 54 mm, which matches the footprint of a standard Siemens S0 contactor for clean DIN-rail alignment."},{"question":"What connector is required with 3RK1901-3BA00?","answer":"The 3RK1901-0EA power connector set is required separately — it provides the plug-in power terminals for the busbar connection to the load feeder module."},{"question":"What busbar spacing does 3RK1901-3BA00 fit?","answer":"It is designed for mounting on a busbar with 40 mm center-line spacing, the standard Siemens pitch for SIRIUS contactor busbar systems."},{"question":"Does 3RK1901-3BA00 include PE and neutral connection?","answer":"Yes, the module has built-in PE and neutral conductor connection, eliminating the need for a separate terminal block for these connections in the load feeder circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1901-3BA00","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RK1901-3BA00 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}}