{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SSM3A325F7","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"SSM3A325F7","canonicalUrl":"https://aoctrl.com/schneider/SSM3A325F7","factsUrl":"https://aoctrl.com/api/mcp/products/SSM3A325F7","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Harmony Solid State Relays SSM3A325F7, modular DIN rail SSR, 3-phase, 25 A, 48-600 V AC, zero-voltage switching.","salesMarkdown":"The Schneider SSM3A325F7 is a three-phase solid state relay from the Harmony SSM3 series, rated for 25 A continuous load per phase at 48-600 V AC. Zero-voltage switching gates the load near the line zero crossing, minimizing inrush on resistive or lightly inductive loads. Control circuit accepts 90-140 V AC, drawing 15-19 mA. Off-state DV/dt is rated at 500 V/µs at maximum output voltage, giving solid transient immunity against switching noise on the line. ## Key electrical ratings Surge withstand: 286 A for 20 ms at 50 Hz, 300 A for 16.6 ms at 60 Hz. Corresponding I²t for fusing: 410 A²·s at 50 Hz, 374 A²·s at 60 Hz. Dielectric strength 4 kV AC between input/output and to case. Insulation resistance 1000 MΩ. On-state voltage drop under 1.35 V, off-state leakage max 0.25 mA. Maximum capacitance input/output 8 pF. ## Installation note Mounts on symmetrical DIN rail. Input terminals accept 0.2–1.3 mm² (AWG 24–16); output terminals accept 1.3–5.3 mm² (AWG 16–10). Tightening torque 0.6–0.7 N·m on input, 1.36–1.7 N·m on output. Green LED shows input status. IP20 enclosure. Ambient storage -40 to 100 °C.","metaTitle":"Schneider SSM3A325F7 Harmony SSR, 25 A, 48-600 V AC, 3-phase","metaDescription":"Schneider SSM3A325F7 Harmony solid state relay, 3-phase 25A 48-600VAC, zero-voltage switching, dv/dt 500 V/µs. Current production. UL/CSA/CE/EAC.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":[],"specifications":{"DV/dt":"500 V/µs off-state at maximum voltage","Width":"3.5 in (90 mm)","Marking":"CSA UL CE EAC","Category":"US10CP222375","Standards":"IEC 60950-1 UL 508 CSA C22.2 No 14","Test Button":"Without test button","Load current":"0.1...25 A","Power Factor":"0.5 (with maximum load)","Input Current":"15...19 mA","Response time":"30 ms (turn-off) 20 ms (turn-on)","Surge current":"286 A 20 ms 50 Hz 300 A 16.6 ms 60 Hz","Output voltage":"48...600 V AC","lifecycle_stage":"current","Local signalling":"LED (green) for input status","Mounting Support":"Symmetrical DIN rail","Number of phases":"3 phase","Pollution degree":"2","Range of Product":"Harmony Solid State Relays","Device short name":"SSM3","Switching voltage":"90 V turn-on 10 V turn-off","Tightening torque":"0.6...0.7 N.m for input 1.36...1.7 N.m for output","Line Rated Current":"25 A","Number of Channels":"3","Dielectric strength":"4 kV AC for input/output 4 kV AC for input or output to case","Maximum Capacitance":"8 pF for input/output","Maximum voltage drop":"<1.35 V on-state","Overvoltage category":"III","Insulation resistance":"1000 MOhm","Nbr. of units in pkg.":"1","Output switching mode":"Zero voltage switching","Transient Overvoltage":"1100 V","Maximum I2t for fusing":"410 A².s for 10 ms at 50 Hz 374 A².s for 8.3 ms at 60 Hz","Connections - terminals":"Screw terminals 0.2...1.3 mm², AWG 24...AWG 16) input Screw terminals 1.3...5.3 mm², AWG 16...AWG 10) output","IP degree of protection":"IP20","Maximum leakage current":"0.25 mA off-state","Solid state output type":"Zero voltage switching","Product or Component Type":"Modular DIN rail relay","Maximum Horse Power Rating":"1 hp 104 °F (40 °C) 240 V AC 2 hp 104 °F (40 °C) 380 V AC 3 hp 104 °F (40 °C) 480 V AC","[Uc] control circuit voltage":"90...140 V AC","Ambient Air Temperature for Storage":"-40...212 °F (-40...100 °C)","Ambient Air Temperature for Operation":"-4...176 °F (-20...80 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$93.98","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f6681fc609b07ddf294d844ca10ecd52.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/SSM3A325F7/alternatives.json"},"ai":{"faq":[{"question":"What is the dv/dt rating of SSM3A325F7?","answer":"500 V/µs off-state at maximum voltage, providing robust immunity to fast transients on the line."},{"question":"What is the physical width of this SSR?","answer":"3.5 in (90 mm), fitting standard DIN-rail mounting footprints."},{"question":"What compliance documents are available for SSM3A325F7?","answer":"The relay carries markings CSA, UL, CE, and EAC, and complies with IEC 60950-1, UL 508, and CSA C22.2 No 14."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/SSM3A325F7","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/SSM3A325F7 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:21:01.794Z","lastPublished":"2026-09-02T08:21:01.794Z","indexable":true}}