{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"K3HB-RNB-C2","brand":"Omron","brandSlug":"omron","productSlug":"K3HB-RNB-C2","canonicalUrl":"https://aoctrl.com/omron/K3HB-RNB-C2","factsUrl":"https://aoctrl.com/api/mcp/products/K3HB-RNB-C2","rawCanonicalId":null},"summary":{"shortDescription":"Omron K3HB-R series, Rotary Pulse Indicator, K3HB-RNB-C2, NPN/voltage pulse input, relay output (HH/H/LL/L: SPST-NO each), 100-240 VAC / 24 VAC/VDC / DeviceNet 24 VDC supply, Approx. 300 g.","salesMarkdown":"The Omron K3HB-RNB-C2 is a Rotary Pulse Indicator from the K3HB-R series, a digital panel indicator that reads pulse inputs from rotary encoders or similar NPN/voltage pulse sources and displays the count or rate on its front panel. The C2 output code means it comes with four SPST-NO relay contacts (HH, H, LL, L), each independently set for high/low alarm thresholds. Power supply flexibility is built in: it accepts 100 to 240 VAC, 24 VAC/VDC, or 24 VDC via a DeviceNet power supply connection, so it fits into both line-voltage and 24 VDC control circuits without an external converter. The K3HB-RNB-C2 is a fast mover for panel builders and MRO stockrooms that standardize on the K3HB-R series for rate and count display. Keep one on the shelf if your line uses NPN pulse outputs and needs four relay setpoints — the min/max level is one unit per panel or two for critical spares. The NB input code means it is wired for NPN open-collector or voltage pulse inputs — common for incremental rotary encoders and flow meters. If your sensor is PNP, you would need the PB input variant; this one expects the signal to sink to common. The four relay outputs (HH/H/LL/L) are each SPST-NO, rated for general-purpose switching of alarms, counters, or small pilot loads. They are not intended for direct motor or solenoid switching without an interposing contactor — treat them as signal-level outputs to a PLC or relay bank. Ambient operating temperature spans −10 to 55°C with 25% to 85% humidity, and storage goes to −25 to 65°C.","metaTitle":"Omron K3HB-RNB-C2 Rotary Pulse Indicator, Relay Output, Matu","metaDescription":"Omron K3HB-RNB-C2 Rotary Pulse Indicator with relay output (HH/H/LL/L: SPST-NO each). NPN/voltage pulse input. Supply: 100-240 VAC, 24 VAC/VDC, or DeviceNet 24 VDC. Mature lifecycl","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Process / Temperature Controllers"],"specifications":{"K3HB-R":"Rotary Pulse Indicator","Weight":"Approx. 300 g","Altitude":"2,000 m max.","Manufacturer":"OMRON","Supply voltage":"100 to 240 VAC, 24 VAC/VDC, DeviceNet power supply: 24 VDC","Shipping Weight":"1.5 Kg","lifecycle_stage":"mature","Input Sensor Codes":"NB = NPN input/voltage pulse input","Estimated Lead Time":"1 - 10 Working Days","Storage temperature":"−25 to 65°C (with no icing or condensation)","Ambient operating humidity":"25% to 85%","Ambient operating temperature":"−10 to 55°C (with no icing or condensation)","Relay/Transistor Output Type Codes":"C2 = Relay contact (HH/H/LL/L: SPST-NO each)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ded6370ee5a068ba57eb68c8f3ce0dd4.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/K3HB-RNB-C2/alternatives.json"},"ai":{"faq":[{"question":"What power supply options does it accept?","answer":"It accepts 100 to 240 VAC, 24 VAC/VDC, or 24 VDC via a DeviceNet power supply input. This covers both line-voltage panels and 24 VDC control systems."},{"question":"What type of input sensor does it work with?","answer":"The NB code means it accepts NPN open-collector or voltage pulse inputs. It is not compatible with PNP sensors without a signal converter."},{"question":"What are the relay output configurations?","answer":"The C2 output code provides four SPST-NO relay contacts labeled HH, H, LL, and L, each independently adjustable for high/low alarm setpoints."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/omron/K3HB-RNB-C2","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-RNB-C2 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}}