Schneider Finder Omron Timer Relay Comparison Guide for Time Relay Specifications and Models
Selecting a timer relay often fails in practice for three reasons: unclear standards, confusing “function codes” (on-delay/off-delay/interval/flasher), and datasheets that look similar until you hit real-world constraints like supply-voltage tolerance, contact ratings, and panel space. This deep-research blog compares Schneider, Finder, and Omron time relay specifications and models using primary datasheets and the key international standards that shape what “good specs” actually mean
TL;DR
- Standards define the baseline: If a product states compliance with IEC time-relay requirements, that anchors expectations for definitions, type/routine tests, and core performance terms (repeatability, insulation, etc.). IEC 61812-1 is the most directly relevant “time relays” standard, while IEC 60664-1 is often referenced for insulation coordination (clearance/creepage).
- DIN-rail, 17.5 mm slim relays are a common “like-for-like” comparison point: Many mainstream modular time relays from Schneider, Finder, and Omron target the same cabinet density class (often 17.5 mm width) and similar universal supply concepts, but differ in contact rating, range granularity, and configuration style.
- A practical model triad for comparison: Schneider RE17 family (example: 8 A relay output and 24…240 VAC/DC variants), Finder 80.01 (16 A class, 12…240 VAC/DC, multi-function), and Omron H3DT (24…240 VAC/DC, multi-mode, up to 1,200 h range and 5 A resistive rating in the datasheet).
- Digital vs analog timers is really about interface and setting behavior: “Analog timer” usually means dial/ring setting; “digital timer” typically means numerical setting and/or digital display and different internal time-setting behavior/definitions in technical guidance. Your choice impacts readability, setting repeatability, and maintenance workflow.
- Selection shortcut: Choose by (1) function (on-delay/off-delay/interval/flasher/star-delta), (2) supply and control input method, (3) output type and contact rating, (4) time range granularity, and (5) approvals/environment. Then validate against your panel standard and wiring practice.
Key Takeaways
- Standards-first beats brand-first for risk control.
- Compare “same form factor + same function” before price.
- Digital vs analog is an ops decision as much as a technical one.
Internal link suggestion: Learn more about control-panel wiring conventions for timer relays (hardwired logic vs PLC).
Standards that shape time relay specifications
A time relay is not just “a relay with a knob.” The baseline vocabulary and test expectations are anchored by the International Electrotechnical Commission standard IEC 61812-1, which explicitly applies to time relays and coupling relays and defines requirements, tests, and formal definitions for different types of time relays used in the IEC 61812 series. In practice, this matters because many datasheet fields (repeat accuracy, dielectric strength, timing definitions) are framed to map back to that test-and-definition system. For example, some manufacturer datasheets explicitly tie repeat accuracy and time-delay setting accuracy to IEC 61812-1.
A second “quiet but critical” standard is IEC 60664-1, which deals with insulation coordination for low-voltage equipment and provides requirements used to determine clearances and creepage distances. That is the backbone behind statements like “insulation resistance conforms to IEC 60664-1” or “creepage distance 4 kV/3.”
External authoritative standard links (required):
- IEC 61812-1 (Time relays and coupling relays – Requirements and tests):
- IEC 60664-1 (Insulation coordination – Principles, requirements and tests):
If you sell into North America, approvals may reference UL pathways as well; UL documentation explicitly includes time-delay relays and describes UL 508 scope for industrial control equipment.
Key Takeaways
- IEC 61812-1 is the anchor for time-relay terminology and tests.
- IEC 60664-1 underpins insulation/creepage/clearance claims.
- UL scope can matter if your market needs UL recognition.
Internal link suggestion: Learn more about compliance labels (CE/UL) in industrial automation components.
Brand and model family map for Schneider, Finder, and Omron
For Schneider Electric, a widely used modular family is the Harmony RE17/RE22 class. Schneider’s product digest describes RE17/RE22 as offering both 8 A relay outputs and 0.7 A solid-state outputs in a compact 17.5 mm design intended for 35 mm DIN rail mounting; the RE17 series is also presented with multi-function/dual/single function and multi-range/multi-voltage positioning. A Schneider product datasheet example in this family (RE17R*) shows 17.5 mm width, universal 24…240 VAC/DC supply, and IEC-linked accuracy statements—exact details depend on the specific model code.
For Finder S.p.A., the Series 80 modular timers are a common “panel-builder” reference point. Finder’s own Series 80 documentation highlights 17.5 mm width, six time scales from 0.1 s to 24 h, and 35 mm rail mounting with EN 60715 noted. Finder also offers NFC-programmable variants (e.g., 80.01 NFC) via its app workflow, which can be a differentiator for maintenance and repeatability of settings.
For OMRON Corporation, the H3DT slim timer set is positioned as 17.5 mm “slim timers” aimed at saving panel space, and the datasheet shows defined time-range steps from sub-second up to 1,200 hours (depending on range selection) and a universal 24…240 VAC/DC supply in common variants. The H3DT-N/L is also described as configurable into multiple operating modes (eight modes noted), which maps directly to the “multifunction time relay” keyword.
| Brand | Series / Model Family | Typical Models | Mounting / Width | Supply Voltage | Main Functions | Time Range | Output | Selection Notes |
|---|---|---|---|---|---|---|---|---|
| Schneider Electric | Harmony RE17 / RE22 | RE17R*, RE17L*, RE22* | 35 mm DIN rail / 17.5 mm slim width | Typical universal 24…240 VAC/DC | Multi-function, single-function, dual-function; on-delay, off-delay, flashing, interval depending on model | Typical range up to 0.1 s…100 h depending on model | 8 A relay output or 0.7 A solid-state output depending on version | Good choice for compact industrial panels needing broad Schneider-style function coverage and common supply flexibility |
| Finder | Series 80 | 80.01, 80.01 NFC, 80.11, 80.21 | 35 mm DIN rail / 17.5 mm slim width | Typical multi-voltage 12…240 VAC/DC or 24…240 VAC/DC depending on model | AI on-delay, DI interval, SW flasher, BE off-delay with control signal, CE on/off delay with control signal, DE interval with control signal | 0.1 s…24 h | Up to 16 A, usually 1 CO / SPDT depending on model | Strong option for panel builders who want clear function coding and NFC programming for repeatable field settings |
| Omron | H3DT Slim Timer Series | H3DT-A, H3DT-H, H3DT-G, H3DT-N / L | 35 mm DIN rail / 17.5 mm slim width | Typical universal 24…240 VAC/DC | ON-delay, power OFF-delay, star-delta, interval, multi-mode configurations; H3DT-N/L supports multiple operating modes | Sub-second up to 1,200 h depending on selected range and model | Typical 5 A resistive contact output | Suitable when wide timing range, slim cabinet design, and multi-mode flexibility are important |
Key Takeaways
- All three brands target slim DIN-rail modular use-cases.
- “NFC programmable” is available in at least some Finder/Schneider lines.
- Omron’s H3DT highlights multi-mode configuration and wide time ranges.
Internal link suggestion: Learn more about selecting DIN-rail components for compact control panels.
Timer relay specification checklist with a practical comparison snapshot
When writing about time relay specifications and time relay models, readers care less about marketing labels and more about “gotcha” parameters that break installations. A robust spec checklist typically includes:
Supply and tolerance: many modern modular timers use broad AC/DC supplies. For example, Finder 80.01 is shown with 12…240 VAC/DC nominal and an operating range up to 265 VAC/DC in its instruction bulletin; Schneider RE17 examples show 24…240 VAC/DC; Omron H3DT lists 24…240 VAC/DC.
Function set: don’t just say “multifunction time relay.” Name the actual modes: Finder 80.01 lists functions like AI (on-delay), DI (interval), SW (symmetrical flasher), BE (off-delay with control signal), CE (on- and off-delay with control signal), and DE (interval with control signal). Omron H3DT includes named timing charts/modes (e.g., ON Delay / power ON delay) and states the H3DT-N/L can be set to eight operating modes.
Output and contact rating: Finder 80.01 is specified as 1 CO (SPDT) and 16 A at 250 VAC (plus AC1/AC15 figures). Schneider RE17R* examples show 8 A relay output and 1 C/O contact; Omron H3DT lists contact output 5 A at 250 VAC (resistive) and 5 A at 30 VDC (resistive).
Time range granularity: Finder shows time scales up to 24 h; Omron H3DT shows selectable ranges up to 100 to 1,200 h; Schneider RE17 family tables commonly present 0.1 s to 100 h for modular units.
Key Takeaways
- Compare supply + output rating first; function comes next.
- Write the function codes explicitly to reduce buyer confusion.
- Time range “headline” must include granularity and maximum range.
Internal link suggestion: Learn more about contact types (SPDT/DPDT) and load categories (AC1/AC15).
How to choose the right industrial time delay relay for real automation work
A good time relay selection guide starts from the machine sequence, not the catalog. Step one is choosing the timing behavior: on delay timer relay (delay-on-make / power-on-delay), off delay timer relay (delay-on-break), interval/one-shot, flasher/recycle, or star-delta. Finder’s documentation is explicit and practical here: for “AI on-delay,” output transfers after the preset time and resets when power is removed; for “BE off-delay with control signal,” power is applied continuously, output transfers on signal closure, and resets after the signal opens and the delay expires. Omron’s H3DT timing charts similarly label ON Delay (Power ON Delay) and other behaviors, which helps you explain “what the relay actually does” in SEO-friendly terms.
Step two is interface and maintainability: analog time relay vs digital time relay. Omron’s timer portfolio materials explicitly discuss analog and digital timer classes, and Omron’s technical explanation differentiates how scale time (TMs) is treated for digital timers versus analog behavior, which affects calibration/setting discussion in your blog. If your audience is maintenance-heavy, programmable or app-based setting can reduce “screwdriver drift”; Finder’s 80.01 NFC is presented as smartphone programmable via NFC, and Schneider literature also describes NFC timing-relay concepts and app-based configuration benefits.
Step three is panel compatibility: slim DIN rail timer relay formats (often 17.5 mm class) reduce cabinet width but do not eliminate wiring constraints, ambient temperature, and approvals. Datasheets for example models include operating temperature ranges and insulation/IEC references you can cite directly.
Time Relay Selection Guide for Industrial Automation
A practical timer relay selection guide should start from the machine sequence, not from the catalog. The table below helps engineers and buyers choose the right on delay timer relay, off delay timer relay, multifunction time relay, digital time relay, or analog time relay based on real control-panel needs.
| Selection Step | What to Check | Typical Options | Practical Meaning | Selection Tip |
|---|---|---|---|---|
| 1. Timing Function | What action should happen first, and what should happen after the delay? |
On delay timer relay Off delay timer relay Interval / one-shot Flasher / recycle Star-delta |
This defines the actual sequence logic of the machine, not just the model name. | Always choose function first. A multifunction time relay is useful only if you really need multiple modes. |
| 2. Supply Voltage | What voltage is available in the control panel? |
24 VDC 24 VAC 110 VAC 220–240 VAC Universal 24…240 VAC/DC |
Wrong supply selection is one of the most common causes of timer relay failure in the field. | Universal voltage models are convenient for distributors and panel builders with mixed projects. |
| 3. Output Rating | How much current and what load type must the relay switch? |
SPDT / DPDT 5 A / 8 A / 16 A Relay output Solid-state output |
Output rating determines whether the timer can directly switch the load or only send a control signal. | Do not compare timer relays only by function. Compare function + output rating together. |
| 4. Interface Style | How will operators or maintenance staff set the timing value? |
Analog time relay Digital time relay NFC programmable timer |
Interface style affects readability, repeatability, and how easy it is to restore settings after maintenance. | For maintenance-heavy applications, programmable or digital models often reduce setting errors. |
| 5. Panel Compatibility | Will the timer fit the cabinet layout and wiring space? |
DIN rail timer relay 17.5 mm slim width 35 mm rail mounting Push-in or screw terminals |
Slim width saves panel space, but terminal access, bending radius, and heat still matter. | Check real panel spacing, not only product width on the datasheet. |
| 6. Approvals & Environment | Does the application require specific standards or ambient temperature limits? |
IEC references UL-related approvals Operating temperature range Insulation / creepage data |
Standards and environmental limits help avoid issues during export, panel certification, or long-term field use. | When comparing industrial timer relay brands, approvals can be as important as price. |
Alt text: Decision tree and selection table for choosing a timer relay in industrial automation control panels, covering function, supply voltage, output rating, interface type, panel compatibility, and approvals.
Key Takeaways
- Choose function first; don’t force-fit “multifunction” if not needed.
- Analog vs digital is a setting-workflow and readability decision.
- NFC/programmable options reduce human setting variance in the field.
Internal link suggestion: Learn more about common timer relay sequences (pump alternation, fan post-run, star-delta starting).
FAQ
What is the most relevant standard for time-delay relays?
IEC 61812-1 is the most directly scoped standard for time relays and coupling relays, defining requirements, tests, and key definitions used across time-relay types. In blogs and datasheet interpretation, it’s the best “common language” reference point—especially when brands quote repeat accuracy or timing-related criteria as “conforming to IEC 61812-1.”
How do I compare Schneider vs Finder vs Omron timer relay models without getting lost?
Compare within the same form factor and use-case first (e.g., 17.5 mm DIN rail modular class), then match function set (on-delay/off-delay/interval/flasher), then compare supply range and output rating. Manufacturer documents provide clean anchors: Schneider RE17 shows 24–240 supply class and 0.1 s to 100 h patterns; Finder 80 series highlights 0.1 s to 24 h scales and a 16 A class for 80.01; Omron H3DT documents time ranges up to 1,200 h and 24–240 VAC/DC supply variants with stated contact ratings.
Do I need a digital timer relay, or is an analog timer relay fine?
Analog vs digital is rarely about “better electronics” and more about usability and setting control. Portfolio materials explicitly separate analog and digital timer categories, and technical guidance reflects differences in how set values/scale time are treated for digital timers versus analog setting behavior. If your site visitors are panel builders or maintenance teams, emphasize readability, repeatability of settings, and documentation practices (recording setpoints).
Key Takeaways
- Anchor definitions in IEC 61812-1 for credibility.
- Use a consistent comparison frame (form factor → function → supply → output).
- Explain analog vs digital in terms of operations, not hype.
Internal link suggestion: Learn more about timer relay troubleshooting (miswiring, wrong function mode, supply mismatch).
Conclusion and CTA
f your goal is a high-converting, SEO-friendly blog, the most defensible approach is to treat “timer relay comparison” as standards + datasheet evidence, then present a short list of “best-fit” models per scenario. The research-backed message is simple: Schneider RE17/RE22 class emphasizes slim DIN-rail density with relay/solid-state options; Finder Series 80 emphasizes modular 17.5 mm timers with clear function coding (and NFC-programmable variants); Omron H3DT emphasizes slim DIN-track timers with structured time-range steps and multi-mode configuration.
CTA (recommended for your blog end):
If you want a quotation or a shortlisting table tailored to your panel standard, send your required supply voltage, load type (AC1/AC15/DC), timing function (on-delay/off-delay/interval/flasher/star-delta), and preferred mounting (DIN rail vs panel). We can recommend 2–3 matching industrial time delay relay options and provide datasheet links plus cross-references for equivalents.
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