{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT5956-1CD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT5956-1CD00","canonicalUrl":"https://aoctrl.com/siemens/3RT5956-1CD00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT5956-1CD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS RC element surge suppressor, order code 3RT5956-1CD00, rated at DC 150-250 V, AC 50 Hz 127-240 V, AC 60 Hz 240-127 V.","salesMarkdown":"Siemens 3RT5956-1CD00 is a SIRIUS RC-element surge suppressor. It handles DC 150 to 250 V and AC 127 to 240 V at 50 Hz, or 240 to 127 V at 60 Hz. The DC voltage range of 150 to 250 V is the critical selection parameter: this suppressor is intended for contactor coils with a rated control voltage falling within that band. If your coil is 24 VDC, this part will not suppress — the RC element won't conduct enough to clamp the transient. The AC range covers 127 to 240 V at 50 Hz and 240 to 127 V at 60 Hz, which maps to common global line voltages (127 V line-to-neutral in some markets, 240 V line-to-line in others). The AC/DC type of voltage means the same unit works on either supply, but the DC range is the tighter constraint. Storage range of -40 to +80 °C is broader, governing shelf life before installation. The part is rated for 50 Hz and 60 Hz operation, so it works on either mains frequency without derating. As a snap-on accessory for SIRIUS contactors, this RC suppressor mounts directly onto the coil terminals of the matching contactor — no additional wiring or DIN-rail space required. It adds negligible depth to the contactor assembly, so fill factor in the enclosure stays unchanged. Verify the contactor frame size: the 3RT5956-1CD00 is designed for the SIRIUS range; check that the contactor's coil voltage falls within the suppressor's DC or AC range before ordering.","metaTitle":"Siemens 3RT5956-1CD00 SIRIUS RC Surge Suppressor, 150-250 VD","metaDescription":"Siemens 3RT5956-1CD00 SIRIUS RC surge suppressor for contactor coils. Rated 150-250 VDC, 127-240 VAC 50/60 Hz. Active production. Sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"at DC":"150 ... 250V","at 50 Hz":"127 ... 240V","at 60 Hz":"240 ... 127V","1 Rated Value":"50Hz","2 Rated Value":"60Hz","During Storage":"-40 ... +80°C","lifecycle_stage":"current","During Operation":"-25 ... +60°C","Product Brand Name":"SIRIUS","Product Designation":"surge suppressor","Design Of The Surge Suppressor":"RC element","Type Of Voltage Of The Control Supply Voltage":"AC/DC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=580108&mlfb=3RT5956-1CD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT5956-1CD00/alternatives.json"},"ai":{"faq":[{"question":"What is the DC voltage rating of 3RT5956-1CD00?","answer":"The DC control supply voltage range is 150 to 250 V. This is the range the RC element is designed to suppress transients across."},{"question":"Will 3RT5956-1CD00 drop into a panel wired for a 3RT1016-1BB42 contactor?","answer":"No — the 3RT1016-1BB42 is a 24 VDC contactor, and the 3RT5956-1CD00 suppressor is rated for 150-250 VDC. The voltage ranges do not overlap, so it will not provide effective suppression on a 24 V coil."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT5956-1CD00","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/3RT5956-1CD00 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}}