{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C103MA003","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C103MA003","canonicalUrl":"https://aoctrl.com/schneider/C103MA003","factsUrl":"https://aoctrl.com/api/mcp/products/C103MA003","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NSX100...250, trip unit MA2.5, magnetic, 2.5 A, 3 poles 3D, for motor short-circuit protection.","salesMarkdown":"The C103MA003 is a magnetic-only trip unit from the Schneider Electric ComPacT NSX series, designed for motor short-circuit protection in AC networks. It carries a 2.5 A rating at 65 °C and fits the NSX100...250 frame. The MA designation means it provides instantaneous magnetic protection only — no thermal overload element — so it relies on a separate motor starter or overload relay for running overcurrent protection. This is standard practice for motor branch circuits where the trip unit handles the short-circuit fault and the starter handles the overload. The instantaneous pick-up is adjustable across nine settings from 6× to 14× In (15 A to 35 A at the 2.5 A rating). That range lets you set the magnetic trip threshold high enough to avoid nuisance trips on motor inrush (typically 6–8× FLA) while still clearing a bolted fault. The 3-pole 3D protected poles description means all three poles are protected and the trip unit switches the line conductors. The IP40 enclosure rating on the trip unit itself is sufficient for panel-mount applications where the breaker is behind a closed door. There is no earth-leakage protection integrated — that function would need a separate Vigi module or an external RCD. ## Motor duty and coordination This trip unit is specifically listed for motor application (Device application: Motor). The magnetic-only characteristic is intentional: in a motor branch circuit, the thermal overload is handled by the starter's overload relay (typically a TeSys LR or similar), and the trip unit only needs to clear short-circuits. The adjustable instantaneous setting lets you coordinate with the starter's withstand rating. For a 2.5 A motor (roughly 0.75 kW at 400 V), setting the magnetic trip to 10× In (25 A) would ride through a normal start while still protecting the cable and contactor against a phase-to-phase fault.","metaTitle":"Schneider Electric C103MA003 ComPacT NSX Trip Unit, 2.5 A, M","metaDescription":"Schneider Electric C103MA003 trip unit for ComPacT NSX100 circuit breakers. Magnetic MA type, 2.5 A rating, 3 poles, adjustable short-circuit protection. Active production. Quoted","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Range":"ComPacT","title":"C103MA003","Standards":"EN/IEC 60947-2","description":"trip unit MA2.5 for ComPacT NSX 100 circuit breakers. magnetic. rating 2.5 A. 3 poles 3d","Network type":"AC","Trip unit name":"MA","Protection type":"I : for short-circuit protection (magnetic)","lifecycle_stage":"current","Pollution degree":"3 conforming to IEC 60947-1","Range of product":"ComPacT NSX100...250","Trip unit rating":"2.5 A at 65 °C","Network frequency":"50/60 Hz","Poles description":"3P","Device application":"Motor","Trip unit technology":"Magnetic","IP degree of protection":"IP40 conforming to IEC 60529","Earth-leakage protection":"Without","Product or component type":"Trip unit","Protected poles description":"3D","Circuit breaker mounting mode":"Fixed","Trip unit protection functions":"I","[Ue] rated operational voltage":"690 V AC 50/60 Hz","Electrical shock protection class":"Class II","Ambient air temperature for storage":"-50...85 °C","Ambient air temperature for operation":"-25...70 °C","Instantaneous protection pick-up adjustment type Ii":"Adjustable 9 settings","[Ii] instantaneous protection pick-up adjustment range":"6...14 x In"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$123.03 – $159.03","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/21a0c9f76bceb37ca88167e414cb5168.pdf","sourceUrl":"https://www.se.com/za/en/product/C103MA003/trip-unit-ma2-5-for-compact-nsx-100-circuit-breakers-magnetic-rating-2-5-a-3-poles-3d/"},"ai":{"faq":[{"question":"Where can I buy C103MA003 and how do I get a price?","answer":"The C103MA003 is available to order through independent distribution. Submit an RFQ for current pricing and availability — both are confirmed at quote time."},{"question":"What is C103MA003's listed range (ComPacT) on this component line?","answer":"The C103MA003 belongs to the Schneider Electric ComPacT NSX100...250 range of molded-case circuit breakers and accessories."},{"question":"What is C103MA003's listed standards (EN/IEC 60947-2) on this component line?","answer":"The C103MA003 complies with EN/IEC 60947-2, the standard for low-voltage switchgear and controlgear — specifically for circuit breakers. This covers the trip unit's performance under fault conditions and its coordination requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C103MA003","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/C103MA003 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}}