Mean Well LRS-600-5 Power Supply
5V 100A · 500W rated — not 600W · 90A on inputs below 110VAC · fan-cooled, 50°C on/off · 225 × 124 × 41mm · UL 62368-1
The highest-current 5V supply in the LRS range, with two numbers on the label that most listings never explain: the 5V model is rated 500W rather than the 600W of the series, and the 100A nameplate figure only applies above 110VAC input. Verified datasheet facts, wiring and sizing — supplied by Excelled Display, LED display manufacturer and component supplier for global B2B integrators.
Mean Well LRS-600-5 Power Supply at a Glance
What is it? The LRS-600-5 is the 5V model in the MEAN WELL LRS-600 series of enclosed single-output switching power supplies. It delivers a regulated 5V DC output at up to 100A from a 90–132VAC or 180–264VAC input selected by switch, in a 225 × 124 × 41mm metal case with a covered 9-pin screw terminal block and a built-in cooling fan.
How many watts is it? 500W — not 600W. The 12V, 15V, 24V, 27V, 36V and 48V models in this series all reach 600W. The 5V model does not, because the series shares a current ceiling and 5V is the lowest voltage in the range. 5V multiplied by 100A is 500W. If you are replacing a failed supply against a 600W budget, that 100W gap is the first thing to reconcile.
Does it always deliver 100A? No — and this is the detail almost nobody publishes. MEAN WELL’s own derating note states that for the 5V model, the label reads 100A when the input voltage is above 110VAC, and 90A when the input voltage is below 110VAC. On a 115VAC nominal supply you get the full 100A. On a 100–110VAC supply — which is a realistic brownout or heavily loaded circuit condition in some markets — the rated output is 90A, or 450W. Verify the actual site voltage before committing to a 5V load figure.
Does it have a fan? Yes. Forced air cooling through a built-in fan with on/off control, switching on at approximately 50°C and off at approximately 40°C.
What does it take in? 90–132VAC / 180–264VAC by switch, or 255–370VDC with the switch on 230VAC, at 47–63Hz. Typical AC current is 12A at 115VAC and 7.5A at 230VAC, with inrush current of 35A at 115VAC and 60A at 230VAC cold start.
What protections are built in? Overload at 105–150% of rated power with constant-current limiting and shutdown after three seconds, over-voltage at 5.75–6.75V, and over-temperature shutdown. All three latch off and require a manual re-power, with a specified cool-down — four minutes on this model, one minute longer than the LRS-450.
What is it used for? The largest single-feed 5V LED cabinet sections, high-current signage, and industrial equipment needing 100A at 5V without stepping to a rack-mount supply. Configuration, MOQ and pricing from our sales team.
LRS-600-5 vs the Rest of the LRS-600 Series: The Only Model Below 600W
The LRS-600 series contains seven models. Six of them reach 600W. The 5V model is the sole exception, and the reason is the same structural one that affects the LRS-350 and LRS-450: every model shares a single output-current ceiling, so as voltage falls, wattage falls with it.
| Model | Output voltage | Rated current | Rated power | Shortfall vs 600W |
|---|---|---|---|---|
| LRS-600-5 | 5V | 100A | 500W | −100W |
| LRS-600-12 | 12V | 50A | 600W | exactly 600W |
| LRS-600-15 | 15V | 40A | 600W | exactly 600W |
| LRS-600-24 | 24V | 25A | 600W | exactly 600W |
| LRS-600-27 | 27V | 22.2A | 599.4W | at rating |
| LRS-600-36 | 36V | 16.6A | 597.6W | at rating |
| LRS-600-48 | 48V | 12.5A | 600W | exactly 600W |
LRS-600-5 Specifications: The Datasheet Parameters That Matter on a Screen
Transcribed from the MEAN WELL LRS-600 specification sheet (LRS-600-SPEC, revision dated 2025-09-12) for the 5V model. All parameters not otherwise noted are measured at 230VAC input, rated load and 25°C ambient.
| Parameter | LRS-600-5 specification |
|---|---|
| DC output voltage | 5V, adjustable 4.75 ∼ 5.5V |
| Rated current | 100A above 110VAC input; 90A below 110VAC input — current range 0 ∼ 100A |
| Rated power | 500W — the series name says 600W; the 5V model does not reach it |
| Ripple & noise (max.) | 200mVp-p, measured at 20MHz bandwidth with a 12″ twisted pair terminated by a 0.1µF and 47µF parallel capacitor |
| Voltage tolerance | ±2.0% (includes set-up tolerance, line regulation and load regulation) |
| Line regulation | ±0.5% |
| Load regulation | ±2.0% from 0% to 100% rated load |
| Set-up / rise time | 1300ms, 50ms/230VAC at full load, measured at cold start |
| Hold-up time (typ.) | 20ms/230VAC, 16ms/115VAC at full load |
| Input voltage range | 90 ∼ 132VAC / 180 ∼ 264VAC selected by switch; 255 ∼ 370VDC with the switch on 230VAC |
| Input frequency | 47 ∼ 63Hz |
| Efficiency (typ.) | 86% at 5V (series spans 86% at 5V to 92% at 36V and 48V) |
| AC current (typ.) | 12A/115VAC, 7.5A/230VAC |
| Inrush current (typ.) | 35A/115VAC, 60A/230VAC cold start |
| Leakage current | <2mA / 240VAC |
| Overload protection | 105 ∼ 150% rated output power; constant-current limiting, unit shuts down after 3 seconds; re-power on to recover |
| Over-voltage protection | 5.75 ∼ 6.75V; shuts down output, re-power on to recover |
| Over-temperature protection | Shuts down output, re-power on to recover |
| Cool-down before restart | 4 minutes (typ.) required once any protection has triggered |
| Fan control | RTH3 threshold: fan on at ~50°C, off at ~40°C |
| Cooling | Forced air cooling by built-in fan (on/off controlled) |
| Working temperature | −20 ∼ +65°C with derating (curve specified for horizontal mounting) |
| Working humidity | 20 ∼ 90% RH, non-condensing |
| Storage | −40 ∼ +85°C, 10 ∼ 95% RH |
| Temperature coefficient | ±0.03%/°C (0 ∼ 50°C) |
| Vibration | 10 ∼ 500Hz, 5G, 10 min per cycle, 60 min each along X, Y and Z axes |
| Operating altitude | Up to 5,000m, with ambient derating of 5°C per 1,000m above 2,000m |
| Withstand voltage | I/P–O/P 3.75KVAC; I/P–FG 2KVAC; O/P–FG 0.5KVAC |
| Isolation resistance | 100MΩ / 500VDC at 25°C, 70% RH |
| Dimensions (L×W×H) | 225 × 124 × 41mm (MEAN WELL case no. 292) |
| Weight / packing | 0.95kg per unit; 12pcs / 12.4kg / 0.77CUFT per carton |
| MTBF | 1533.4K hours min. (Telcordia SR-332); 301.7K hours min. (MIL-HDBK-217F at 25°C) |
Two notes from the same sheet are worth carrying into the cabinet design. First, voltage adjustment may only be performed within an input range of 100–120VAC or 200–240VAC; adjusting outside that range may cause abnormal output. Second, the mechanical drawing specifies an airflow direction across the case, so the mounting orientation in the cabinet is not arbitrary.
The 100A Nameplate Has a Condition: Input Above 110VAC
MEAN WELL’s LRS-600 datasheet carries a derating note that applies specifically to the 5V model and that essentially no reseller listing reproduces. It states, in the manufacturer’s own words, that because of test-method differences the rating on the label differs from the derating curve, and that for the 5V model the output current states 100A on the label when input voltage is greater than 110VAC, and states 90A when input voltage is less than 110VAC.
In other words, 100A is a conditional figure, not an absolute one. The condition is an input of more than 110VAC.
| Input condition | Rated output current | Rated output power |
|---|---|---|
| Above 110VAC (e.g. 115VAC, 230VAC nominal) | 100A | 500W |
| Below 110VAC (e.g. 100VAC nominal, or a sagging 115V circuit) | 90A | 450W |
Why this matters more on a screen than on a bench
- A 100–110VAC site is not exotic. Japan’s eastern grid runs at 100V nominal. A 115VAC circuit under heavy load, a long feeder run, or a building with poor voltage regulation can all sit below the threshold while the nameplate still says 120V.
- The penalty lands exactly where you cannot afford it. The supply does not fail cleanly at 90A — it holds there, and if the connected load was sized for 100A the unit is now running above its rated output and heading for the overload threshold. Overload on this model means constant-current limiting, then a latching shutdown three seconds later.
- Measure, do not assume. Before finalising a 5V load budget on an LRS-600-5, measure the actual AC voltage at the supply terminals under normal site load. If it reads below 110VAC, size to 90A / 450W.
How Many LED Modules Can One LRS-600-5 Power?
Start from the figure that applies to your site: 500W at 100A above 110VAC, or 450W at 90A below it. Then work through the same three inputs that govern every supply sizing decision.
- Start from the correct rating for your input voltage. This is the step that catches people out on this model specifically.
- Apply a load ceiling. A common planning rule in LED cabinet builds is to keep continuous load at or below about 80% of rated output — roughly 400W, or 80A, on a 500W / 100A figure. This is an engineering convention rather than a figure published by MEAN WELL, so treat it as a starting point and confirm it against your own project’s thermal and warranty conditions.
- Divide by the module’s maximum power, taken from the module datasheet rather than a marketing page. A full-white test pattern is the condition a screen is commissioned under, and it is the load the supply will actually see.
- Check the current path. 80A at 5V is the largest DC current in the LRS range. Confirm the wire gauge, the terminal rating and the number of separate feeds before ordering.
Worked as an Illustrative Example — substitute your own module figures; these numbers are for the arithmetic only:
| Step | Illustrative calculation |
|---|---|
| Supply rating above 110VAC | 500W / 100A at 5V |
| Supply rating below 110VAC | 450W / 90A at 5V |
| Usable at 80% planning ceiling (above 110VAC) | 400W / 80A |
| Usable at 80% planning ceiling (below 110VAC) | 360W / 72A |
| Module maximum power (illustrative) | 25W per module |
| Modules per supply, 115VAC site (400 ÷ 25) | 16 modules |
| Modules per supply, 100VAC site (360 ÷ 25) | 14 modules — two fewer for the same hardware |
The difference between those last two rows is the practical cost of the 110VAC threshold: the same supply powers two fewer modules on a low-voltage site, and no nameplate, listing or quotation will tell you that unless it reproduces the derating note. Parallel operation is not a function this model provides — if the screen outgrows one supply, split the cabinet into independently supplied sections. For the control and signal side of the same cabinet, the LED control system collection covers how sending cards, receiving cards and processors are powered and wired alongside the supplies.
LRS-600-5 Wiring: 9-Pin Terminal Assignment and AC Input Setup
The LRS-600-5 terminates in a covered 9-pin screw terminal block, with the assignment printed on the unit:
| Pin | Assignment | Practical note |
|---|---|---|
| 1 | AC/L — live | Mains live input |
| 2 | AC/N — neutral | Mains neutral input |
| 3 | FG — frame ground | Bond to the cabinet earth; do not omit |
| 4 ∼ 6 | DC OUTPUT −V | Three terminals, shared negative rail |
| 7 ∼ 9 | DC OUTPUT +V | Three terminals, shared positive rail |
Set the input voltage switch before you connect mains
The unit carries a selector switch for 90–132VAC or 180–264VAC. It ships set for one range, and connecting 230V mains to a supply left on the 115V position will damage it immediately. On this model the switch position also determines whether you are in the 100A or the 90A rating band, so confirm it against the measured site voltage as the first step of commissioning.
Split 100A across all three output terminal pairs
At 100A, take the load off through every available terminal — all three +V and all three −V. Contact resistance and local heating at the terminal block, not the supply’s internal capability, are the limiting factors at this current. Keep the DC run to the first module as short as the cabinet allows, and consider multiple separate feeds to different cabinet sections rather than one heavy run.
Adjust the output at the far end of the run, on a good input
The potentiometer sets output between 4.75V and 5.5V. Measure at the far end of the DC run rather than at the supply terminals, then trim to bring the module input back to its specified voltage. Do that trimming with the supply fed from a solid 100–120VAC or 200–240VAC source — the datasheet warns that adjustment outside those windows may produce abnormal output.
The same wiring discipline applies to the control hardware inside the cabinet. Our guides to the MCTRL660 LED display controller and the Colorlight X2 LED video processor cover the signal side, and the Huidu HD-A5 LED display player covers standalone playback for screens that run without a PC.
LRS-600-5 vs LRS-450-5 vs RSP-500-5: When to Step Up, and When to Switch Series
The interesting comparison here is not within the LRS range — it is against the RSP series, which costs more but adds a feature the LRS range does not have at any size.
| Parameter | LRS-450-5 | LRS-600-5 | RSP-500-5 |
|---|---|---|---|
| Series | LRS | LRS | RSP |
| Output | 5V / 75A | 5V / 100A | 5V / 90A |
| Rated power | 375W | 500W | 450W |
| Built-in PFC | × | × | ✓ |
| Ripple & noise (max.) | 200mVp-p | 200mVp-p | 150mVp-p |
| Cooling | Fan, 50°C on / 40°C off | Fan, 50°C on / 40°C off | Fan, speed controlled |
| Working temp. | −20 ∼ +70°C | −20 ∼ +65°C | Series dependent |
| Overload behaviour | Shutdown, re-power | Shutdown, re-power | Shutdown, re-power |
| Cool-down to restart | 3 min (typ.) | 4 min (typ.) | Series dependent |
| Dimensions | 225×124×35mm | 225×124×41mm | 230×127×40.5mm |
| Weight / carton | 0.85kg, 15pcs | 0.95kg, 12pcs | 1.3kg, 9pcs |
| Best for | Mid-size 5V sections | Largest single-feed 5V sections | Installations needing PFC |
Three differences a datasheet table hides
- The RSP-500-5 is the lower-current but higher-specification choice. It delivers 90A against the LRS-600’s 100A, yet it includes a power factor correction stage and specifies lower ripple and noise — 150mVp-p against 200mVp-p. If a tender requires PFC or a tight ripple figure, the RSP is the part, and the 10A difference is not the deciding factor.
- Case height keeps climbing. 30mm on the LRS-350, 35mm on the LRS-450, 41mm on the LRS-600. Across three steps of the ladder that is 11mm of extra depth in the cabinet, which is more than a typical 1U slot has to give. Check the envelope before upgrading in place.
- The carton gets lighter in units, not just heavier per unit. 15 pieces per carton on the LRS-450 against 12 on the LRS-600. For a project ordering in the hundreds, that is a real difference in pallet count and freight — worth factoring into a landed-cost comparison.
When the LRS-600-5 Is the Wrong Power Supply
This is the top of the LRS ladder for 5V, which means the reasons not to buy it are mostly reasons to look at a different series rather than a different model.
| Situation | Why the LRS-600-5 does not fit |
|---|---|
| Power budget calculated on 600W | The 5V model delivers 500W above 110VAC and 450W below it. Recalculate before ordering, or the supply will sit at or beyond its overload threshold in normal operation. |
| Site voltage below 110VAC | The rated output drops to 90A / 450W. Either size the load to 90A, or choose a supply whose rating does not depend on the input band. |
| Unattended installation with no service access | Overload, over-voltage and over-temperature all latch off and need a manual re-power, with a four-minute cool-down — the longest in the LRS range. Nothing recovers on its own. |
| PFC or tight ripple required | The LRS series has no power factor correction stage. The RSP-500-5 adds PFC and specifies lower ripple and noise, at 90A rather than 100A. |
| Noise-sensitive indoor or studio use | This is a fan-cooled model. Once the internal sensor passes about 50°C the fan runs, and in a warm cabinet it will not stop. The fanless LRS-200-5 is the model for that requirement. |
| Ambient above +65°C | The working range tops out at +65°C — five degrees lower than the LRS-350 and LRS-450. Hot-climate outdoor cabinets should check this first. |
| Cabinet slot sized for a 30mm or 35mm case | This model is 225 × 124 × 41mm. It will not fit a slot dimensioned for the LRS-350 or LRS-450 envelope. |
| EU installation with harmonic limits | See the compliance section. The datasheet carries an explicit restriction for this series. |
Where the power supply is the wrong component to be choosing at all, the constraint is usually elsewhere in the system. On the product side, pages such as the P3.91 rental LED display and the P2.5 indoor LED display set out the module-level specifications those decisions start from.
LRS-600-5 Compliance: UL 62368-1, the KC 5V Exclusion and EN61000-3-2
The LRS-600 series is certified to BS IEC/UL 62368-1, BS EN/EN61558-1 and BS EN/EN61558-2-16, with additional approvals including EAC TP TC 004, BSMI CNS15598-1, GB 4943.1 and BIS IS13252 (Part 1). It is also designed to AS/NZS 61558.1/2.16 and AS/NZS 62368.1. Withstand voltage between input and output is 3.75KVAC. Note that the KC62368-1 listing carries the qualifier “except for 5V” — the 5V model is not covered by that approval. If a specific market certificate is a contractual requirement, confirm it against the actual batch rather than assuming series-wide coverage.
There is one caveat in this datasheet that buyers in Europe need to read in full, because almost no reseller page mentions it. The manufacturer states that this power supply does not meet the harmonic current requirements of BS EN/EN61000-3-2, and sets out conditions under which it should not be used:
- The end device is used within the European Union, and
- The end device is connected to a public mains supply rated 220VAC or higher nominal, and
- The supply is installed in an end device with average or continuous input power greater than 75W, or forms part of a lighting system.
The same note lists exceptions, including professional equipment with a total rated input power greater than 1,000W. This is not a defect in the product — it is a scope limitation the manufacturer publishes plainly, and it is the kind of detail that decides whether a part is usable on a given project.
The component is also specified as a part to be installed into final equipment, not as a standalone appliance: the manufacturer notes that EMC testing was carried out with the unit mounted on a 360mm × 360mm metal plate of 1mm thickness, and that the final equipment must be re-confirmed as still meeting EMC directives.
LRS-600-5 Troubleshooting: Latching Shutdown and the Long Cool-Down
Nothing on this supply recovers by itself. Every protection latches off and requires the unit to be re-powered, after a specified cool-down that runs to four minutes on this model — the longest in the LRS range. Diagnose the cause before re-powering, or the same shutdown simply repeats.
Output is dead and stays dead
- Possible cause: a protection has latched — overload, over-voltage or over-temperature. There is no auto-recovery, so a latched shutdown looks exactly like a failed unit.
- How to check: remove the load, wait the full four-minute cool-down, and re-power. If the supply starts with no load but shuts down again once the cabinet is connected, the cause is the load, not the unit.
- Fix: reduce the connected load to within 500W (or 450W if the site runs below 110VAC), or split it across a second supply. Then re-power.
It worked on the bench and shuts down on site
- Possible cause: site input voltage below 110VAC, dropping the rated output from 100A to 90A and pushing a correctly-sized load into overload.
- How to check: measure AC voltage at the supply terminals under normal site load, not at the distribution board and not with the screen off.
- Fix: reduce the module count per supply to fit the 90A / 450W band, or correct the supply circuit so it holds above 110VAC under load.
Fan runs constantly and the cabinet is not obviously hot
- Possible cause: the enclosure is trapping heat around the supply even though the room is cool — or the supply is mounted so its exhaust blows into a closed panel.
- How to check: measure the air temperature at the supply’s intake and compare it with the room. A large gap means the cabinet is not shedding heat.
- Fix: add intake and exhaust ventilation to the cabinet, and check the mounting against the airflow direction marked on the mechanical drawing. Do not block the fan grille to quieten it.
Screen brightness drops or pixels discolour at the far end of a run
- Possible cause: voltage drop along the DC path, not a supply fault. At 5V and 100A, cable resistance takes a proportionally large bite out of the delivered voltage.
- How to check: measure voltage at the supply terminals and again at the input of the last module on the run. The difference is the drop, and at these currents it is measured in whole volts, not millivolts.
- Fix: shorten the run, increase the conductor cross-section, or split into multiple feeds from the three output terminal pairs. Then trim the potentiometer so the module input reads its specified 5V under load — with the supply fed from a solid 100–120VAC or 200–240VAC source.
LRS-600-5 Datasheet, Manual and 3D Drawing
The documents below are the manufacturer’s own files, hosted by MEAN WELL. They are the reference we work from, and the correct place to verify any specification quoted on this page — including the 500W rating and the 110VAC derating note, which are the two figures most often missing from reseller listings.
| Document | What it covers |
|---|---|
| LRS-600-5 datasheet (PDF) | Full specification table, derating curve with the 5V label note, block diagram, mechanical drawing with airflow direction and terminal pin assignment |
| LRS-600 series product page | All seven voltage variants with their individual model datasheets and certificates |
| Installation manual | Manufacturer installation guidance for the LRS enclosed series |
| 3D outline drawing (ZIP) | CAD model of the 225 × 124 × 41mm case no. 292 enclosure for cabinet layout work |
MEAN WELL prints a serial number on each unit that can be traced on the manufacturer’s own website. That is the authoritative way to confirm a batch’s provenance and production date — more reliable than any listing photograph, including ours.
Mean Well LRS-600-5: Frequently Asked Questions
QHow many watts is the Mean Well LRS-600-5?
500W, not 600W. At 5V and 100A the output is 500W. The 12V, 15V, 24V, 27V, 36V and 48V models in the same series all reach 600W because they carry lower current at higher voltage, but the 5V model does not.
QDoes the LRS-600-5 always deliver 100A?
No. MEAN WELL’s derating note states that for the 5V model the output current is 100A when the input voltage is above 110VAC and 90A when the input voltage is below 110VAC. On a low-voltage site the rated output is 90A, or 450W, so measure the actual site voltage before sizing the load.
QDoes the LRS-600-5 have a fan?
Yes. It uses forced air cooling through a built-in fan with on/off control. The fan switches on when the internal sensor reaches approximately 50 degrees Celsius and off again at approximately 40 degrees Celsius, so it is silent at low load and runs continuously in a warm cabinet.
QHow many amps does the LRS-600-5 output?
100A at 5V with an input above 110VAC, or 90A below 110VAC, with a current range of 0 to 100A. The series shares a single output-current ceiling across all seven models, which is why the 5V model produces less total wattage than the higher-voltage ones.
QWhat happens when the LRS-600-5 is overloaded?
Overload protection engages at 105 to 150 percent of rated output power using constant-current limiting, and the unit shuts down after three seconds. It does not recover automatically. The supply must be re-powered, and the datasheet specifies a cool-down period of about four minutes before restart.
QDoes the LRS-600-5 have power factor correction?
No. The LRS series does not include a power factor correction stage. PFC is a feature of the MEAN WELL RSP series and of the UHP series. If a project specification requires PFC, the RSP-500-5 is the comparable 5V option at 90A and 450W.
QWhat is the efficiency of the LRS-600-5?
Typical efficiency is 86 percent at the 5V output, measured at 230VAC input and rated load. The series spans 86 percent at 5V up to 92 percent at the 36V and 48V models, so the 5V model is the least efficient in the range.
QWhat are the dimensions of the LRS-600-5?
225mm long by 124mm wide by 41mm high, weighing 0.95kg, with 12 units per carton. The 41mm height is the tallest case in the LRS range, so it will not fit a mounting slot dimensioned for the 30mm low-profile enclosure.
QHow do I wire the LRS-600-5 terminal block?
The 9-pin block assigns pin 1 to AC live, pin 2 to AC neutral and pin 3 to frame ground. Pins 4 to 6 are the DC negative output and pins 7 to 9 are the DC positive output. At 100A, distribute the load across all three output terminal pairs.
QWhat is the working temperature range of the LRS-600-5?
Minus 20 to plus 65 degrees Celsius with derating, and the derating curve is specified for horizontal mounting. That upper limit is five degrees lower than the LRS-350 and LRS-450. Operating altitude goes up to 5,000 metres with additional derating above 2,000 metres.
QHow many LED modules can one LRS-600-5 power?
It depends on the maximum power rating of your modules and on your site voltage. As an illustrative example, a 400W usable budget at an 80 percent planning ceiling divides into sixteen 25W modules above 110VAC, but only fourteen on a site below 110VAC where the rating drops to 90A.
QIs the LRS-600-5 certified for Korea?
The datasheet lists KC62368-1 with the qualifier “except for 5V”, so the 5V model is not covered by that approval. If a Korean market certificate is a contractual requirement for a 5V supply, confirm it against the actual batch before ordering.
Excelled Display supplies MEAN WELL power supplies alongside the modules, cabinets and control hardware they run with, so the power budget and the screen specification are confirmed together rather than in isolation. For the rest of the chain, see the LED control system collection, the outdoor LED display range and the LED display manufacturing process behind them.
Related reading: Mean Well LRS-350-5 power supply · MCTRL600 LED display controller · Colorlight X4 LED video processor · Mooncell MB401 media player · COB LED display CNI series