{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"K8AC-H23PN-FLK","brand":"Omron","brandSlug":"omron","productSlug":"K8AC-H23PN-FLK","canonicalUrl":"https://aoctrl.com/omron/K8AC-H23PN-FLK","factsUrl":"https://aoctrl.com/api/mcp/products/K8AC-H23PN-FLK","rawCanonicalId":null},"summary":{"shortDescription":"Omron K8AC-H23PN-FLK, Type Heater Element Detector, Series K8AC-H, Input Range 20~200A, Output Type Solid State (2), Display LED Red Characters, Communications RS-485 (CompoWay/F), Mounting DIN Rail, Termination Spring Terminal, Voltage Supply 85~264VAC.","salesMarkdown":"## What this detector does that a temperature controller cannot The K8AC-H23PN-FLK is a dedicated heater element detector, not a general-purpose temperature controller. It monitors current through a heater load via an external current transformer (CT) in the 20~200A range and flags a fault when the current drops below a set threshold — meaning an open heater element, a failed SSR shorted open, or a blown fuse. A temperature controller reading a thermocouple will not catch a dead heater until the process drifts; this unit catches it on the next half-cycle. Two solid-state outputs give you separate alarm and normal-status signals — one can trigger a PLC input, the other a panel beacon. The 4-digit red LED display shows the measured current in real time, so a walk-by glance confirms all heaters are drawing load. ## Panel wiring and integration constraints Mounts on standard DIN rail. The spring terminals accept solid or ferruled stranded wire without needing a screwdriver torque check — faster termination in a panel build. Supply range 85~264VAC means it runs on any common plant voltage from 110 V to 240 V without a transformer tap change. RS-485 communication using Omron's CompoWay/F protocol lets a PLC or SCADA poll the measured current and fault status over a multi-drop bus. If you are integrating into a Modbus network, note the protocol mismatch — CompoWay/F is not Modbus RTU, so a protocol converter or gateway is needed at the master side. Operating temperature range -10°C to 55°C covers most indoor electrical enclosures; if the panel sits near a furnace or in a non-conditioned space above 55°C, derate or relocate the unit.","metaTitle":"Omron K8AC-H23PN-FLK Heater Element Detector, 20~200A","metaDescription":"Omron K8AC-H23PN-FLK heater element detector, 20~200A input, RS-485 CompoWay/F, solid-state outputs, DIN rail, spring terminals.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Process / Temperature Controllers"],"specifications":{"Type":"Heater Element Detector","title":"K8AC-H23PN-FLK","Series":"K8AC-H","Weight":"0.441 lb (200.03 g)","Package":"Bulk","Features":"Heater Fault Detection","Input Range":"20 ~ 200A","Output Type":"Solid State (2)","description":"DETECT HEATER ELEMENT 85-264V","Display Type":"LED - Red Characters","Mounting Type":"DIN Rail","Communications":"RS-485 (CompoWay/F)","lifecycle_stage":"current","Voltage - Supply":"85 ~ 264VAC","Termination Style":"Spring Terminal","Operating Temperature":"-10°C~55°C","Number of Characters Per Row":"4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What does the K8AC-H23PN-FLK detect?","answer":"It detects heater element faults — open heater, failed SSR, or blown fuse — by monitoring current in the 20~200A range through an external CT. When current drops below the set threshold, the solid-state outputs change state."},{"question":"Will the K8AC-H23PN-FLK replace an E5CC-T temperature controller in a panel?","answer":"No. The E5CC-T series are panel-mount temperature controllers with PID control, screw terminals, and IP66 front bezels. The K8AC-H23PN-FLK is a DIN-rail heater element detector with spring terminals and no temperature control function. They are not mechanically or electrically interchangeable without rewiring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/K8AC-H23PN-FLK","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/omron/K8AC-H23PN-FLK 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}}