{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"K3HB-RPB 100-240VAC","brand":"Omron","brandSlug":"omron","productSlug":"K3HB-RPB-100-240VAC","canonicalUrl":"https://aoctrl.com/omron/K3HB-RPB-100-240VAC","factsUrl":"https://aoctrl.com/api/mcp/products/K3HB-RPB%20100-240VAC","rawCanonicalId":null},"summary":{"shortDescription":"Omron K3HB-R series, Type Tachometer, panel-mount rate indicator, 100~240 VAC supply, 50 kHz max count rate, IP66 front, external reset, LCD dual-color backlit display.","salesMarkdown":"The Omron K3HB-RPB 100-240VAC is a panel-mount tachometer — a rate indicator that displays frequency or speed from a pulse train. It accepts no-voltage inputs (dry contacts or NPN open-collector signals) up to 50 kHz, which covers most encoder and proximity sensor outputs on a production line. The dual-color backlit LCD shows two rows of five characters each, letting you display rate and a secondary value (like total or batch count) simultaneously. Supply is 100~240 VAC direct — no separate 24 VDC power supply needed for the meter itself. The external reset input lets a PLC or pushbutton clear the display remotely, which matters when you're batching or cycling production runs. Panel cutout is 92 mm x 45 mm — the standard 1/8 DIN footprint that fits existing punch-outs in most control panels. The IP66 front rating means the display and keypad survive washdown in food-and-beverage lines or outdoor enclosures where hose-down cleaning is routine. Screw-terminal connections on the rear; no special crimp tool needed for field wiring. If the panel sees direct sun or a hot machine face, keep the ambient inside the enclosure under 55°C. ## Outputs and expansion There are no built-in outputs — the K3HB-RPB relies on option cards for alarm, control, or communication outputs. If your application needs a relay trip at a set speed, or a transistor output to a PLC, order the matching option card separately. The base unit is just the display and input stage. It's a mature, widely stocked line, so lead times are typically short.","metaTitle":"Omron K3HB-RPB 100-240VAC Tachometer, 50 kHz, IP66 Panel","metaDescription":"Omron K3HB-RPB 100-240VAC tachometer panel meter. 50 kHz count rate, 100-240 VAC supply, IP66 front, external reset, LCD display. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Process / Temperature Controllers"],"specifications":{"Type":"Tachometer","Reset":"External","Series":"K3HB-R","Weight":"0.662 lb (300.28 g)","Package":"Bulk","Count Rate":"50kHz","Input Type":"No Voltage","Output Type":"Option Cards Available","Display Type":"LCD - Dual Color Characters, Backlight","Mounting Type":"Panel Mount","Operating Mode":"Up","lifecycle_stage":"mature","Voltage - Supply":"100 ~ 240VAC","Termination Style":"Screw Terminal","Ingress Protection":"IP66 - Dust Tight, Water Resistant","Operating Temperature":"-10°C ~ 55°C","Panel Cutout Dimensions":"Rectangular - 92.00mm x 45.00mm","Display Characters - Height":"0.560\" (14.20mm), 0.192\" (4.90mm)","Number of Characters Per Row":"5, 5"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f83d06cfe9c0753ef0992114b909318b.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/K3HB-RPB%20100-240VAC/alternatives.json"},"ai":{"faq":[{"question":"What type of input does this tachometer accept?","answer":"It accepts no-voltage inputs — dry contact switches or NPN open-collector signals. Maximum count rate is 50 kHz."},{"question":"What is the panel cutout size?","answer":"Rectangular cutout of 92.00 mm x 45.00 mm, which is the standard 1/8 DIN footprint."},{"question":"Does this meter include alarm or control outputs?","answer":"No built-in outputs. Outputs require separately ordered option cards for relay, transistor, or communication functions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/omron/K3HB-RPB-100-240VAC","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/K3HB-RPB-100-240VAC 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}}