# ANSI/IEEE Minute-pulse clock contact form Canonical URL: https://eloragrid.ai/symbols/ansi-minute-pulse-clock-contact Publisher: Elora Grid Updated: 2026-10-28 Lookup label: HIN1P33 Drawing use: Schematic Reference families: IEEE / ANSI, Manufacturer ## Symbol convention Convention: IEEE / ANSI Form: Normally Open Clock Closing Every Minute Autodesk IEEE Symbol Preview: Instrumentation and Sensors, block HIN1P33. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier. Related representation: [Minute-pulse clock contact](https://eloragrid.ai/symbols/iec-minute-pulse-clock-contact) IEEE-library form of minute-pulse clock contact: this representation identifies the publisher's normally-open clock contact that closes every minute. ## In plain English ### What does ANSI/IEEE Minute-pulse clock contact form mean? This reference locates minute-pulse clock contact in Autodesk's IEEE-oriented instrumentation and sensors family. This representation identifies the publisher's normally-open clock contact that closes every minute. The public library uses HIN1P33 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number. ### A simple example Use the surrounding circuit labels and the project legend to identify the intended operating condition and connection. Carry the same device reference into the schedule or equipment document so the symbol can be reconciled with its real terminals, function and operating limits. ### What the drawings help you do Document the pulse purpose and downstream circuit response. A periodic clock contact is distinct from an on-delay or off-delay timer. Document the pulse purpose and downstream circuit response. A periodic clock contact is distinct from an on-delay or off-delay timer. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted. ### This particular reference IEEE-library form of minute-pulse clock contact: this representation identifies the publisher's normally-open clock contact that closes every minute. A periodic clock contact is distinct from an on-delay or off-delay timer. ### Terms - Normally open / normally closed: The contact state in the normal condition defined for the drawing. - Terminal: An identified point where a conductor connects. - Signal: Electrical information passed between devices, rather than necessarily the main power supply. Concept diagram: Identify the device and form → Read the connections and state → Check the equipment reference A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram. - [Autodesk IEEE Symbol Preview — Instrumentation and Sensors](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F44D5059-4728-40BD-B9BA-0DE7CFDFAACF.htm) ## What it represents This reference locates minute-pulse clock contact in Autodesk's IEEE-oriented instrumentation and sensors family. This representation identifies the publisher's normally-open clock contact that closes every minute. The public library uses HIN1P33 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number. Use the surrounding circuit labels and the project legend to identify the intended operating condition and connection. Carry the same device reference into the schedule or equipment document so the symbol can be reconciled with its real terminals, function and operating limits. Document the pulse purpose and downstream circuit response. A periodic clock contact is distinct from an on-delay or off-delay timer. Document the pulse purpose and downstream circuit response. A periodic clock contact is distinct from an on-delay or off-delay timer. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted. ## How to read it - Document the pulse purpose and downstream circuit response. - A periodic clock contact is distinct from an on-delay or off-delay timer. ## Information to show or reference - Identify the associated device, circuit or diagram boundary. - Document the pulse purpose and downstream circuit response. - Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form. ## Important distinction A periodic clock contact is distinct from an on-delay or off-delay timer. ## Facts - Convention evidence: Autodesk IEEE Symbol Preview: Instrumentation and Sensors; published form: Normally Open Clock Closing Every Minute. - Public vendor block: HIN1P33. Vendor library token, not an IEEE symbol number. - Information added: Document the pulse purpose and downstream circuit response. - Preview: Independent educational concept; consult the publisher and applicable standard for the exact graphic - Artwork scope: Original educational geometry. Exact standard graphics, product ratings and terminal pinouts are not certified. ## Public references - [Autodesk IEEE Symbol Preview — Instrumentation and Sensors](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F44D5059-4728-40BD-B9BA-0DE7CFDFAACF.htm) — Autodesk. Public IEEE-oriented Instrumentation and Sensors table explicitly lists HIN1P33 as Normally Open Clock Closing Every Minute. This supports the vendor convention context, not reproduction of the publisher graphic. ## Graphic scope Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.