Omron S8VK-C12024 — 24V 5A DIN Rail Power Supply Guide

By Abdullah Zahid
15 min read
Omron S8VK-C12024 120W 24VDC 5A DIN rail switch mode power supply for industrial control panels

Omron S8VK-C12024 Switch Mode Power Supply, 120 W, 24 VDC, 5 A — Specs, Sizing Guide and Ordering Advice

When a control systems designer or panel builder is specifying a 24 VDC supply for a small-to-mid-size machine, the Omron S8VK-C12024 comes up on the shortlist quickly. It delivers a nominal 24 VDC at 5 A — 120 W total — from a wide single-phase 100–240 VAC input, mounts on standard DIN rail in a compact book-type footprint, and carries the UL, CSA and EN/IEC certifications that panel inspectors and export customers require. The question most buyers are really asking is not "what is it" but "is this the right wattage and grade for my panel, and can I get it when I need it." This review answers both.

If you have already confirmed this is the right part, check current pricing and availability for the S8VK-C12024 at LeadTime.ca — ships worldwide.

Who Should Buy the S8VK-C12024 — and Who Shouldn't

The Omron S8VK-C12024 is the right choice for engineers and panel shops building general-purpose industrial control panels that need a dependable, compact 24 VDC supply without paying for premium diagnostics or high-end robustness features. Buy this part when all of the following are true:

  • Your total 24 VDC panel load — summing PLCs, I/O modules, sensors, relays and HMI — fits within 5 A / 120 W with a comfortable margin for inrush and future expansion.
  • Your input supply is single-phase 100–240 VAC at 50 or 60 Hz.
  • The enclosure has adequate DIN rail space and ventilation clearance for a book-type mounted supply.
  • UL, CSA and EN/IEC certifications are required — but advanced diagnostics such as a relay DC OK output are not.
  • You are operating within the ambient temperature range specified in the Omron datasheet, or panel cooling is sufficient to stay within derating limits.

If your load exceeds 5 A, consider the S8VK-C24024 (240 W) or S8VK-C48024 (480 W). If your application demands a relay-output DC OK signal, extended temperature performance or higher robustness, step up to the Omron S8VK-G series instead.

On this page:

What the S8VK-C12024 Actually Does in a Control Panel

The S8VK-C12024 is a single-phase AC/DC switch mode power supply from Omron's S8VK-C Lite series. Its job in any industrial panel is straightforward: take whatever single-phase AC is available on-site — anywhere from 100 VAC to 240 VAC at 50 or 60 Hz — and deliver a stable, regulated 24 VDC rail that the rest of the panel electronics run from. With a 5 A, 120 W output rating, it covers the typical load profile of a small PLC, a handful of I/O modules, a distributed sensor network and the associated relay and safety circuit loads that appear in most general-purpose machine panels.

The "Lite" designation in the S8VK-C family means this supply is positioned as the cost-effective, space-saving option within Omron's DIN rail PSU lineup. It uses natural convection cooling — no fan — in a book-type form factor that mounts vertically on standard DIN rail. Protection functions include overload and short-circuit protection and overvoltage protection, as documented in the Omron datasheet. What it does not offer is the relay-contact DC OK output or the extended robustness ratings of the higher-grade S8VK-G series — a trade-off that is entirely acceptable for the majority of standard machine and panel applications.

Typical System Architecture for a 24 VDC Panel Supply

The S8VK-C12024 sits at the power conversion layer of a control panel, downstream of the incoming AC protection and upstream of every 24 VDC device in the system. Here is how a typical deployment chain looks:

  • Single-phase AC mains (100–240 VAC) enter the panel and pass through a customer-supplied fuse or circuit breaker sized per Omron recommendations and applicable codes.
  • The S8VK-C12024 converts AC to a regulated 24 VDC rail, terminating at output + and – terminals.
  • The 24 VDC output feeds a terminal block distribution row or directly powers primary loads: PLC CPU and I/O modules, HMI panels and operator devices.
  • Secondary loads draw from the same 24 VDC bus: proximity sensors, photoeyes, safety relays, IO-Link hubs, small network switches and auxiliary contactors.
  • Downstream field devices and actuator solenoids complete the circuit, returning through the common negative rail back to the supply output negative terminal.

Where Engineers Deploy the S8VK-C12024

The most common deployment is a small-to-mid-size OEM machine panel where the total 24 VDC load — PLC, I/O cards, sensors and safety circuits — fits within 5 A with margin to spare. Packaging equipment, conveyor drives, material handling cells and machine tool auxiliary panels all fall naturally into this category. Panel shops building standard machine variants at volume often standardize on the S8VK-C12024 precisely because the wide input range means the same panel design ships to plants running 120 VAC or 240 VAC without a PSU change.

Retrofit projects replacing older linear power supplies are another strong use case. The compact book-type footprint of the S8VK-C12024 frequently opens up DIN rail space compared to the legacy unit it replaces, making it attractive in panel modernization work where the enclosure size cannot change. Building automation and HVAC control panels, water and wastewater lift station panels, and food and beverage conveyor controls are secondary application areas where the combination of standard certifications and cost-effective pricing makes the S8VK-C12024 a natural fit.

Application Typical Deployment
OEM packaging machine panel 24 VDC for PLC CPU, I/O modules, photoeyes and safety relays in a single enclosure
Material handling conveyor control Central 24 V supply feeding distributed sensor inputs and contactor coils along a conveyor line
Retrofit / panel modernization Direct replacement for older linear PSU; recovers DIN rail space in a fixed-size enclosure
Building automation / HVAC panel Control power for DDC controllers, valve actuators and end-device sensors
Water and wastewater lift station 24 VDC auxiliary power for PLC, level sensors and telemetry equipment
Multi-model OEM standardization Common PSU across multiple machine SKUs shipping to 120 VAC and 240 VAC sites worldwide

Purchase-Decision Specifications for the S8VK-C12024

Parameter Value Notes
Output voltage 24 VDC nominal Regulated DC output; adjustment range per Omron datasheet
Output current 5 A 120 W total rated output
Input voltage range 100–240 VAC, single-phase DC input range also supported per Omron datasheet; verify before use
Input frequency 50 / 60 Hz Universal frequency acceptance
Total output power 120 W Basis for load sizing and headroom calculations
Cooling method Natural convection No fan; requires ventilation clearance above and below unit
Mounting DIN rail, book-type form factor Standard industrial DIN rail; verify enclosure rail space
Protection functions Overload / short-circuit, overvoltage, thermal Per Omron datasheet; no relay DC OK output on C Lite series
Certifications UL, CSA, EN/IEC series Confirm exact standard numbers on Omron datasheet for your project
Product family Omron S8VK-C Lite series Cost-effective Lite grade; not equivalent to S8VK-G feature set

Full technical specifications are available on the product page at LeadTime.ca.

S8VK-C12024 vs Other S8VK-C Variants — Which Wattage Do You Need?

Model Output Voltage Output Current Total Power Best Fit
S8VK-C06024 24 VDC 2.5 A 60 W Very small panels; minimal sensor and relay loads only
S8VK-C12024 24 VDC 5 A 120 W Standard OEM and panel shop choice for typical PLC + I/O + sensor loads
S8VK-C24024 24 VDC 10 A 240 W Mid-size panels with higher I/O count, larger HMI or additional actuator loads
S8VK-C48024 24 VDC 20 A 480 W Large panels, high I/O density or multiple distributed loads on a single supply

If your load calculation with margin pushes past 5 A, the S8VK-C24024 is the direct next step — check current availability and pricing at LeadTime.ca and contact the team if you need help confirming which wattage fits your load profile.

Expert Verdict: Is the S8VK-C12024 Worth Specifying?

The Omron S8VK-C12024 earns its place on the BOM for the buyer it is actually designed for: OEM machine builders, panel shops and end users who need a dependable 24 VDC / 5 A supply in a compact DIN rail form factor, with major-brand certifications and a price point that does not inflate the panel BOM. It delivers the 24 V / 5 A rating that covers a wide swath of standard PLC, I/O and sensor loads, accepts the full 100–240 VAC single-phase input range without any hardware change, and installs in minutes on standard DIN rail. For general-purpose applications, that combination of practical specifications, recognized certifications and cost control is a compelling argument for standardizing on this model across multiple machine builds.

Where the S8VK-C12024 shows its Lite-series limits is in demanding environments and high-reliability applications. Engineers specifying panels that will run continuously in hot enclosures near the upper ambient temperature limit, or where remote monitoring through a relay DC OK contact is a system requirement, should move to the Omron S8VK-G series. Similarly, buyers whose load calculations consistently push toward or past 5 A — even with headroom — are better served by the S8VK-C24024 to avoid operating the supply near its rated ceiling over the machine's service life. The S8VK-C12024 is not the wrong part for those scenarios because it is a bad product; it is the wrong part because a more capable model exists in the same family.

From a procurement standpoint, the S8VK-C12024 is generally a stocked item at major automation distributors, but real-world availability fluctuates with demand cycles and supply chain conditions. Ordering through a specialist distributor who can verify current stock, propose the S8VK-C24024 or S8VK-G as an in-family alternate when the C12024 is on lead time, and confirm that the unit you receive carries the exact certification set your panel inspection requires is worth the phone call before the build schedule is at risk. View current availability for the S8VK-C12024 at LeadTime.ca — we ship to panel shops and OEMs worldwide.

For volume pricing, urgent delivery requirements, or to confirm substitution options before committing to your BOM, contact the LeadTime.ca team directly — we ship worldwide and respond quickly to time-sensitive procurement requests.

What Engineers Are Saying About the S8VK-C Series

Across PLC forums including PLCTalk, PLCS.net, MrPLC and the r/PLC and r/automation communities on Reddit, the S8VK-C series accumulates consistent praise for exactly the qualities Omron positions it on: compact size, easy DIN rail installation and a value-for-money proposition that makes sense for general-purpose panels. Installers repeatedly describe the straightforward mounting and simple terminal layout as a reason for standardizing on this supply across multiple machine builds — the implicit point being that a supply you can swap in without pulling the panel schematic has real practical value in a busy panel shop. The wide input range also draws positive comments from engineers who build machines that ship internationally, since a single PSU design handles both 120 VAC and 240 VAC sites without modification.

The complaints that recur are worth knowing before you specify. Terminal block size comes up regularly: engineers working with heavier gauge conductors find the terminals cramped, particularly when the panel wiring uses larger wire to minimize voltage drop over longer runs to distributed terminal blocks. Thermal behaviour near full load is the second consistent theme — several community members note visible warming when units are run close to the 5 A ceiling in enclosures that are already warm, reinforcing the importance of load headroom and adequate panel ventilation. The third recurring point is the absence of a relay DC OK output. Engineers who have previously worked with higher-grade supplies and rely on the DC OK contact for PLC fault detection or E-stop interlock logic find the Lite series limiting when they migrate to a new panel design and discover the feature is not there.

Ordering mistakes in the community align closely with what the wrong-part checklist below captures. The most frequent error is wattage miscalculation — typically an engineer sums only the PLC nameplate current and misses the accumulated draw of sensors, safety relays, network devices and I/O expansion, landing on a 120 W unit that is undersized for the actual panel load. Close behind that is family confusion: several buyers describe receiving the S8VK-C when their panel specification or a colleague's verbal recommendation referred to the S8VK-G, and discovering the feature difference after installation. A third pattern — less common but still present — is copying a part number from an older BOM and transposing the output voltage digit, ordering a 12 V unit for a 24 V panel. All three mistakes are avoidable with a few minutes of deliberate verification before the order is placed.

Wiring and Installation Overview

  • Mount the S8VK-C12024 on standard DIN rail in a book-type (vertical) orientation, observing the ventilation clearances specified in the Omron installation manual above and below the unit — natural convection cooling depends on unobstructed airflow through those gaps.
  • Connect the AC input at the L, N and PE terminals using conductors sized for the supply's input current rating; always install an external fuse or circuit breaker on the primary side, sized per Omron's documentation and the applicable wiring standard for your panel (UL 508A, CSA, IEC, etc.).
  • Connect the 24 VDC output at the + and – output terminals, observing polarity; route output wiring to a dedicated 24 VDC terminal block row or directly to primary loads, keeping output wiring separated from AC input conductors where possible.
  • Verify all terminal connections are torqued to the value specified in the Omron installation manual before energizing — loose terminals on either the AC input or DC output side are a common cause of intermittent faults and localized heat damage.
  • After energizing, confirm the DC OK LED is illuminated, measure the output voltage under no-load and then under the actual panel load, and verify that all primary consumers — PLC, I/O modules, HMI — start up correctly before closing the panel for commissioning.

Sizing Up: When to Add a Second Supply or Move to a Higher Grade

The S8VK-C12024 is a single-supply solution for panels where 5 A covers the load with margin. When a panel design grows — through added I/O, additional field devices, an IO-Link hub, or a small managed Ethernet switch — the load budget can quietly erode that margin. Rather than paralleling two S8VK-C12024 units, which requires careful consideration of load sharing and is not straightforward with supplies that lack active paralleling circuitry, the cleaner engineering path is to move to the next wattage tier in the same family.

  • S8VK-C24024 (10 A, 240 W) — the direct step-up for mid-size panels exceeding 5 A; same Lite series grade and form factor family.
  • S8VK-C48024 (20 A, 480 W) — for large panels with high I/O density or multiple downstream device groups drawing significant continuous current.
  • Omron S8VK-G series — when the application requires a relay DC OK output for fault interlock logic, extended temperature performance, or a higher-robustness supply for demanding industrial environments.

Wrong-Part Prevention Checklist Before You Order

Before placing your order for the S8VK-C12024, verify each of the following items against your panel design and project requirements:

  1. Confirm the required output voltage is 24 VDC, not 12 VDC or 48 VDC.
  2. Verify total 24 VDC load (including inrush and future expansion) does not exceed 5 A / 120 W with margin.
  3. Check the supply is single-phase 100–240 VAC; do not use where a 3-phase PSU is required.
  4. Ensure the "C" Lite series (S8VK-C) is acceptable; do not confuse with S8VK-G or other Omron families when higher robustness is specified.
  5. Confirm the DIN rail space supports the S8VK-C12024 width and required ventilation clearances.
  6. Verify necessary certifications (UL, CSA, EN) match project and panel standards, especially for export machines.

If any item on this list raises a question, contact the LeadTime.ca team before ordering — we can validate sizing, confirm the right Omron family, and identify available alternates if lead times are a concern.

Frequently Asked Questions

Can the S8VK-C12024 reliably power a PLC, I/O modules and sensors all from a single supply?

Yes, provided the sum of all continuous and peak current draws — PLC CPU, all I/O modules, sensors, safety relays and any other 24 VDC devices — fits within 5 A with a reasonable headroom margin. The mistake engineers make is sizing only against the PLC nameplate and ignoring the accumulated sensor and relay loads. Sum every 24 VDC consumer on the panel schematic first, then confirm against the 120 W rating before committing to this supply.

What happens if the load on the S8VK-C12024 exceeds 5 A — does it trip and latch, or does it auto-recover?

The S8VK-C12024 includes overload and short-circuit protection as specified in the Omron datasheet. The exact recovery behavior — whether the supply auto-recovers when the overload is removed or requires manual intervention — should be confirmed against the current Omron documentation for your firmware and production revision. In practice, community feedback indicates that removing the overload or fault condition typically allows the supply to restart, but running near or above the 5 A rating continuously should be avoided through proper sizing rather than relying on protection behavior.

Is it safe to operate the S8VK-C12024 in a warm panel enclosure near its upper ambient temperature limit?

The supply is specified for a defined operating temperature range in the Omron datasheet, and output current derating applies as ambient temperature approaches the upper limit. Engineers running panels in warm or poorly ventilated enclosures should verify the actual ambient inside the panel against the derating curve in the datasheet. Community experience consistently highlights thermal behaviour as one of the few practical limitations of the S8VK-C Lite series — if the panel runs warm, leave additional load headroom or consider upgrading to a higher-grade series with better thermal tolerance.

What is the practical difference between the S8VK-C12024 and the S8VK-G at the same wattage?

The S8VK-G series adds capabilities that the Lite S8VK-C does not include — most notably a relay-contact DC OK output for PLC fault detection and E-stop interlock integration, and in many configurations extended temperature ratings and higher robustness for demanding environments. For standard general-purpose panels where none of those features are in the panel specification, the S8VK-C12024 is the cost-effective choice. When any of those S8VK-G features appear as requirements in the project spec or customer standard, do not substitute the S8VK-C — they are not functionally equivalent for those use cases.

Can I parallel two S8VK-C12024 units to get 10 A or to achieve redundancy?

Paralleling supplies that are not specifically designed for active load sharing is not straightforward and is generally not recommended without confirming compatibility in the Omron documentation. Small differences in output voltage setpoints between two units can cause one supply to carry a disproportionate share of the load. If you need 10 A, the correct solution is the S8VK-C24024. If you need redundancy, consult the Omron documentation for supported redundancy configurations or consider a supply series with built-in redundancy support.

What is the first thing to check when the DC OK LED on the S8VK-C12024 is not illuminated?

Start with the incoming AC side: verify that the external fuse or circuit breaker has not tripped and that AC voltage is present at the input terminals. Next, check that all input terminal connections are tight and show no signs of heat damage or discoloration. If AC input is confirmed good, disconnect the 24 VDC output loads and power up the supply alone — if the output recovers, the fault is an overload or short circuit downstream in the 24 VDC wiring. If the supply does not produce output with no load and confirmed AC input, the unit likely requires replacement.

Why Order the S8VK-C12024 Through LeadTime.ca

  • Global shipping to panel shops, OEMs and plant maintenance teams worldwide — not limited to any single region.
  • Specialist knowledge of the Omron S8VK-C family to validate sizing, confirm certifications and recommend in-family alternates such as the S8VK-C24024 or S8VK-G when the C12024 is constrained.
  • Fast response on availability and lead time inquiries — critical for panel builds with fixed commissioning dates.
  • Volume pricing support for OEMs standardizing the S8VK-C12024 across multiple machine builds.
  • View the S8VK-C12024 product page or contact the team for a quote.

At-a-Glance Summary

  • Model: Omron S8VK-C12024 — Switch Mode Power Supply, 120 W, 24 VDC, 5 A.
  • Output: 24 VDC nominal, 5 A, 120 W total rated power.
  • Input: Single-phase 100–240 VAC, 50/60 Hz; DC input range per Omron datasheet.
  • Form factor: Book-type DIN rail mount, natural convection cooling — no fan.
  • Protection: Overload / short-circuit, overvoltage and thermal protection; no relay DC OK output (Lite series).
  • Certifications: UL, CSA, EN/IEC series — confirm exact standards on Omron datasheet for your project.
  • Product family: Omron S8VK-C Lite series — cost-effective grade for standard industrial panels.
  • Step up to S8VK-C24024 (10 A) or S8VK-C48024 (20 A) for higher loads; step up to S8VK-G for diagnostics and robustness.
  • Pricing is available on the product page; contact LeadTime.ca for current lead time and volume pricing.

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