{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9977-0UA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9977-0UA10","canonicalUrl":"https://aoctrl.com/siemens/3VA9977-0UA10","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9977-0UA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON EFB300 expansion module, 3VA9977-0UA10, 1 digital input, 2 relay outputs, 2 semiconductor outputs, 36 mm depth, IP20.","salesMarkdown":"The 3VA9977-0UA10: The relay outputs are rated 6 A at 250 V AC in AC-12 duty (resistive loads) and 3 A at 250 V AC in AC-15 (inductive loads like contactor coils). For DC switching, the AC-12 rating drops to 0.2 A at 250 V DC, and AC-15 (DC-13) is 0.1 A at 250 V DC — so if you're switching a small DC solenoid or a pilot light, keep the current under 0.1 A at 250 V DC or derate accordingly. The semiconductor outputs are not rated for high inrush; they're meant for signaling, not power loads. The module draws a maximum of 0.16 A from the breaker's auxiliary supply and dissipates 4 VA — negligible for panel thermal budgeting, but check that the 3VA's internal power supply can handle the extra draw if you're stacking multiple expansion modules. ## Deployment context Mounts directly on the side of a 3VA breaker — no DIN rail required — and the connection is removable/pluggable, so you can pre-wire the terminal block and snap it on during commissioning.","metaTitle":"Siemens 3VA9977-0UA10 SENTRON EFB300 expansion module, 1 DI,","metaDescription":"Siemens 3VA9977-0UA10 SENTRON EFB300 expansion module for 3VA breakers. 1 digital input, 2 relay outputs, 2 semiconductor outputs. 36 mm depth. IP20. Current production. Quoted to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"Depth":"36 mm","Width":"70 mm","title":"3VA9977-0UA10","Height":"116 mm","Maximum":"70 °C","Minimum":"-25 °C","Accessories":"Digital input and output module","description":"external function box EFB300 incl. connecting cable 1.5m 3VA-EFB300 accessory for: 3VA6","at AC / maximum":"250 V","at DC / maximum":"250 V","lifecycle_stage":"current","Mounting Position":"any","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Ext. EFB300 expansion module","at AC-12 / at 250 V":"6 A","at AC-15 / at 250 V":"3 A","at DC-12 / at 250 V":"0.2 A","at DC-13 / at 250 V":"0.1 A","protection class IP":"20 acc. to IEC60529","Design Of The Product":"Accessories for 3VA","Number Of Relay Outputs":"2","For Signal <0> / Maximum":"0.2 mA","Number Of Digital Inputs":"1","Suitability For Operation":"Installation in fixed switchboard inside enclosed rooms","Consumed Current / Maximum":"0.16 A","Type Of Electrical Connection":"removable/pluggable","at DC / at 30 V / rated value":"5 A","At Input / Maximum Connectable":"20","For Signal <1> / Initial Value":"10 mA","at AC / at 250 V / rated value":"6 A","At Output / Maximum Connectable":"8","Digital Input And Output Module":"Yes","Operating Range Of Digital Input":"IEC: SELV/ PELV","power loss [V∙A] / rated value":"4 VA","For Signal <1> / Full-Scale Value":"27 mA","Electronic Tripping Unit Power Supply":"Yes","Number Of Static Semiconductor Outputs":"2","Initial Value For Signal<1>-Recognition":"15 V","Full-Scale Value For Signal<0> Recognition":"5 V","Overvoltage Category / Of The Output Relay":"III (relay) I (other)","design of the connecting cable / of the ZSI module":"Flexible, shielded (at least 85% overlap), twisted cable, max. capacity: 200 nF/km (conductor/shield), 160 nF/km (conductor/conductor), inductivity 0.65 H/km, total line resistance: max. 28 ohms","Type Of Electrical Connection / At The Inputs For Supply Voltage":"screw-type terminals","Number Of Interfaces / Of The Circuit Breaker Communication System":"1","Relative Symmetrical Tolerance / Of The Operating Range Of The Control Feed Voltage":"20 %","design of DIAZED fuse link / for short-circuit protection of auxiliary contacts of output relay":"D0 6 A 500 V gL/gG"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a8993068f7c411d639a5180cbe2fcaf5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=650501&mlfb=3VA9977-0UA10"},"ai":{"faq":[{"question":"Where can I buy 3VA9977-0UA10?","answer":"This part is sourced and quoted to order through independent distribution. Submit an RFQ for current availability and pricing."},{"question":"What compliance documentation does Siemens provide for 3VA9977-0UA10?","answer":"The module carries an IP20 protection class per IEC 60529 and is designed for installation in fixed switchboards inside enclosed rooms. Specific RoHS, REACH, UL, or IEC declarations are typically included with the product documentation; confirm with the supplier at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9977-0UA10","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/3VA9977-0UA10 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}