Mean Well LRS-200-5 Power Supply
5V 40A · 200W rated · fanless free-air convection · 215 × 115 × 30mm · UL 62368-1 · 2.35M hour MTBF
The fanless 5V supply for LED cabinets that cannot tolerate fan noise or fan failure — 40A at 5V, 200W rated, cooled by free air convection alone, in the same 30mm low-profile case as the LRS-350 — supplied by Excelled Display, LED display manufacturer and component supplier for global B2B integrators.
Mean Well LRS-200-5 Power Supply at a Glance
What is it? The LRS-200-5 is the 5V model in the MEAN WELL LRS-200 series of enclosed single-output switching power supplies. It converts 90–132VAC or 180–264VAC mains into a regulated 5V DC output at up to 40A, in a 215 × 115 × 30mm metal case with a covered 9-pin screw terminal block.
Does it have a fan? No. The LRS-200 is cooled by free air convection — it is a fanless design. MEAN WELL’s own catalogue states it plainly: “Cooling by free air convection (150W/200W); forced air cooling by built-in DC fan (350W).” The fan starts at the LRS-350, one step up the range. If your project cannot accept a fan — because of acoustic requirements, dust ingress, or the maintenance risk of a moving part — this is the model where the LRS range stops being an option and starts being the right answer.
How much power does it deliver? 200W — and here the series name is honest. 5V × 40A = 200W, so unlike the LRS-350-5 (which delivers 300W despite the “350”) and the LRS-450-5 (375W), this model reaches its nominal figure at 5V. That is worth knowing when you compare the range, because the naming convention is not consistent across it.
What does it take in? 90–132VAC / 180–264VAC selectable by a switch, or 240–370VDC with the switch set to 230VAC, at 47–63Hz. Typical AC current draw is 4A at 115VAC and 2.2A at 230VAC, with a cold-start inrush current of 60A.
What protections are built in? Overload (110–140% of rated output power, hiccup mode with automatic recovery), over-voltage (5.75–6.75V, hiccup mode) and over-temperature shutdown, plus short-circuit protection. All recover automatically once the fault clears.
What is it used for? LED display modules and cabinets — particularly indoor and rental screens where fan noise is unacceptable — LED strip and signage power, and industrial control panels. Configuration, MOQ and pricing from our sales team.
LRS-200-5 vs the Rest of the LRS Series: One 40A Ceiling, Eight Voltages
The LRS-200 series contains eight models sharing one 40A current ceiling. Because power is current multiplied by voltage, that single limit produces a different wattage at every voltage — and only the 5V model lands exactly on the 200W the series is named for.
| Model | Output voltage | Rated current | Rated power | Efficiency (typ.) |
|---|---|---|---|---|
| LRS-200-3.3 | 3.3V | 40A | 132W | 83% |
| LRS-200-4.2 | 4.2V | 40A | 168W | 86% |
| LRS-200-5 | 5V | 40A | 200W | 87% |
| LRS-200-12 | 12V | 17A | 204W | 87.5% |
| LRS-200-15 | 15V | 14A | 210W | 88% |
| LRS-200-24 | 24V | 8.8A | 211.2W | 89.5% |
| LRS-200-36 | 36V | 5.9A | 212.4W | 89.5% |
| LRS-200-48 | 48V | 4.4A | 211.2W | 90% |
LRS-200-5 Specifications: The Datasheet Parameters That Matter on a Screen
Transcribed from the MEAN WELL LRS-200 specification sheet (LRS-200-SPEC, revision dated 2025-09-12) for the 5V model. Most readings are taken at 230VAC input, rated load and 25°C ambient.
| Parameter | LRS-200-5 specification |
|---|---|
| DC output voltage | 5V, adjustable 4.5 ∼ 5.5V via the ADJ. potentiometer |
| Rated current | 40A, current range 0 ∼ 40A |
| Rated power | 200W |
| Ripple & noise (max.) | 150mVp-p, measured at 20MHz bandwidth with a 12″ twisted pair terminated by a 0.1µF and 47µF parallel capacitor |
| Voltage tolerance | ±3.0% (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 | 1500ms, 50ms/230VAC at full load (measured at cold first start) |
| Hold-up time (typ.) | 16ms/230VAC, 12ms/115VAC at full load |
| Input voltage range | 90 ∼ 132VAC / 180 ∼ 264VAC selected by switch; 240 ∼ 370VDC with the switch on 230VAC |
| Input frequency | 47 ∼ 63Hz |
| Efficiency (typ.) | 87% at 5V (series spans 83% at 3.3V to 90% at 48V) |
| AC current (typ.) | 4A/115VAC, 2.2A/230VAC |
| Inrush current (typ.) | 60A/115VAC, 60A/230VAC cold start |
| Leakage current | <2mA / 240VAC |
| Overload protection | 110 ∼ 140% rated output power; hiccup mode, recovers automatically after the fault is removed |
| Over-voltage protection | 5.75 ∼ 6.75V; hiccup mode, recovers automatically |
| Over-temperature protection | Shuts down output; recovers automatically once temperature falls |
| Cooling | Free air convection — fanless, no moving parts |
| Working temperature | −25 ∼ +70°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) | 215 × 115 × 30mm |
| Weight / packing | 0.66kg per unit; 15pcs / 10.9kg / 0.67CUFT per carton |
| MTBF | 2346.6K hours min. (Telcordia SR-332); 279.4K hours min. (MIL-HDBK-217F at 25°C) |
Two series-wide notes apply to this model and are easy to miss. First, the datasheet’s 150% peak load capability — up to one second — is specified for the 12V to 48V models only; it does not extend to the 5V model, so size an LRS-200-5 on its 200W continuous rating. Second, there is an explicit harmonic-current restriction covered in the compliance section below that affects EU installations.
Fanless by Design: What Free-Air Convection Changes in a Cabinet
The LRS-200-5 has no fan, no bearing and no moving part to wear out. That is not a cost-saving shortcut — it is the reason this model exists alongside the fan-cooled LRS-350-5, and it changes four things about how you specify and install it.
- Nothing to fail mechanically. A fan is the single most common wear item in a power supply. Removing it removes the failure mode, and the 2,346.6K-hour MTBF figure reflects that.
- Silent operation, unconditionally. There is no thermal threshold at which the supply suddenly becomes audible. For an indoor screen in a retail space, a boardroom or a studio, that matters more than a few percentage points of efficiency.
- No air drawn through the supply. A fan-cooled unit pulls dust, metal particles and moisture across its internals for its entire service life. A convection-cooled unit does not. In a dusty or humid installation this is a durability argument, not just a hygiene one.
- But the heat still has to leave. Convection is slower than forced air, so the cabinet has to be designed to let hot air rise and escape. A fanless supply in a sealed box is worse off than a fan-cooled one, because there is no mechanism at all to move heat out.
Reading the derating curve correctly
The working temperature range is −25 to +70°C, but the range is not flat. The published derating curve reduces the allowable output load as ambient temperature rises, and it is specified for horizontal mounting. Three things follow:
- Read the curve at your worst case. A cabinet in direct summer sun can sit well above the ambient the rest of the year. Size at the value the curve gives for the hottest condition the screen will see.
- Mount it the way the curve assumes. A supply installed on its side has a different thermal path from the horizontal orientation the curve is drawn for; do not assume the curve transfers unchanged.
- Derate again for altitude. An additional ambient derating of 5°C per 1,000m applies above 2,000m, for operation up to 5,000m.
How Many LED Modules Can One LRS-200-5 Power?
There is no single correct answer, and any supplier who quotes one without asking about your module is guessing. The answer depends on the maximum power rating of your LED module from its own datasheet, the number of modules on the supply, and the headroom you choose to leave.
- Start from the real rating. 200W at 5V, which is 40A.
- 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 160W, or 32A, on an LRS-200-5. 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. It matters more on a fanless supply than a fan-cooled one, because there is no fan to compensate when you push past it.
- Divide by the module’s maximum power, taken from the module datasheet rather than a marketing page — a full-white test pattern is exactly the condition a screen is commissioned under.
- Check the current path. 32A still has to leave through the terminal block and reach the modules. Confirm the wire gauge, the terminal rating and the number of feeds.
Worked as an Illustrative Example — substitute your own module figures; these numbers are for the arithmetic only:
| Step | Illustrative calculation |
|---|---|
| Supply rating | 200W / 40A at 5V |
| Usable at 80% planning ceiling | 160W / 32A |
| Module maximum power (illustrative) | 25W per module |
| Modules per supply (160 ÷ 25) | 6 modules, with 10W of the usable budget unspent |
| Modules if pushed to 100% | 8 modules — no headroom, and a fanless supply has no reserve to call on |
Parallel operation is not a function this model provides. If the screen outgrows one supply, split the cabinet into independently supplied sections rather than paralleling two LRS units. 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-200-5 Wiring: 9-Pin Terminal Assignment and AC Input Setup
The LRS-200-5 terminates in a covered 9-pin screw terminal block. The assignment is fixed and printed on the unit, and getting it wrong is the fastest way to destroy a supply on first power-up:
| 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. Confirm the switch position against the actual site voltage as the first step of commissioning, not the last.
Split the load across the output terminals
At 40A, using more than one terminal per rail keeps contact resistance and local heating down. Use at least two of the three +V and −V terminals on any load above roughly half rating, and keep the DC run to the first module as short as the cabinet allows.
Adjust the output at the far end of the run
The ADJ. potentiometer sets output between 4.5V and 5.5V. LED modules are typically specified at 5V, and the voltage measured at the module input is lower than the voltage at the supply terminals once the cable run is under load. Measure at the far end of the run, not at the supply, then trim the potentiometer to bring the module input back to its specified voltage.
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-200-5 vs LRS-350-5 vs LRS-150-5: The Fan Is the Real Divide
When buyers compare within the LRS range they usually start with wattage. The more useful first question is whether the installation can accept a fan at all, because that decides which half of the range you are shopping in.
| Parameter | LRS-200-5 | LRS-350-5 | LRS-450-5 |
|---|---|---|---|
| Output | 5V / 40A | 5V / 60A | 5V / 75A |
| Rated power | 200W | 300W | 375W |
| Cooling | Fanless | Built-in fan | Built-in fan |
| Efficiency (typ.) | 87% | 83.5% | 87% |
| Working temp. | −25 ∼ +70°C | −25 ∼ +70°C | −20 ∼ +70°C |
| Overload behaviour | Hiccup, auto-recovery | Hiccup, auto-recovery | Shutdown, re-power to reset |
| Dimensions | 215×115×30mm | 215×115×30mm | 225×124×35mm |
| Best for | Noise-sensitive & dusty installs | Standard 5V cabinets | High-current 5V sections |
Three differences a datasheet table hides
- Protection behaviour diverges across the range. The LRS-200-5 and LRS-350-5 use hiccup mode: they shut down, retry, and recover on their own once the fault clears. The LRS-450-5 and LRS-600-5 use constant-current limiting and then shut down permanently after three seconds — recovering requires a manual re-power, and the datasheet specifies a cool-down period (3 minutes on the 450, 4 minutes on the 600) before restart. On an unattended screen, one behaviour is a transient and the other is an outage with a site visit.
- Working temperature is not uniform. The LRS-200-5 and LRS-350-5 are rated from −25°C; the LRS-450-5 and LRS-600-5 start at −20°C, and the LRS-600-5 tops out at +65°C rather than +70°C. Cold-climate installations should check this before standardising on one model across a project.
- Efficiency is not monotonic with size. The 200W model is more efficient at 5V (87%) than the 300W model (83.5%). Bigger is not automatically better on this metric, and the waste heat difference is real inside a sealed cabinet.
When the LRS-200-5 Is the Wrong Power Supply
A page that cannot tell you when not to buy something is a catalogue entry, not advice. The LRS-200-5 is the right answer for a large share of noise-sensitive 5V work, and clearly wrong in the following cases:
| Situation | Why the LRS-200-5 does not fit |
|---|---|
| 5V load above 200W per supply section | The 40A ceiling is the limit of the series. Step up to the LRS-350-5 (300W) or split the cabinet into separately supplied sections. |
| Sealed, unventilated enclosure | This is the case where fanless is worse than fan-cooled. Convection needs a path for hot air to rise and escape; with no fan and no vents, heat has nowhere to go. |
| Ambient above roughly 50°C sustained | The derating curve falls away as ambient rises and there is no fan to compensate. A fan-cooled model holds its rating further up the curve. |
| PFC required by tender or market | The LRS series has no power factor correction stage. Specify an RSP-series supply, or a UHP-series unit which includes PFC. |
| Need 150% peak load capability | Specified for the 12V to 48V models only. It does not extend to the 5V model — do not size an LRS-200-5 assuming a 300W surge. |
| EU installation with harmonic limits | See the compliance section. The datasheet carries an explicit restriction for this series. |
| Modules that require 4.2V or 3.3V | The 5V model adjusts only between 4.5V and 5.5V. LRS-200-4.2 and LRS-200-3.3 cover the lower rails. |
Where the power supply is the wrong component to be choosing at all, the constraint is usually elsewhere in the system. On the indoor 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-200-5 Compliance: UL 62368-1, EN61558 and the EN61000-3-2 Limit
The LRS-200 series is certified to 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). Withstand voltage between input and output is 3.75KVAC. Note that KC62368-1 is listed for the 12V and 24V models only — the 5V model is not included in 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-200-5 Troubleshooting: No Output, Hiccup Mode and Thermal Shutdown
Because three of this supply’s protections are hiccup-mode with automatic recovery, the same visible symptom — the screen blanks and comes back — can have several unrelated causes. Work through them in order; each step separates one cause from the others.
No output at all
- Possible cause: no mains reaching the supply, or the input voltage selector set for the wrong range.
- How to check: measure AC voltage across pins 1 and 2 at the terminal block, then confirm the 115/230V switch position against the site voltage.
- Fix: correct the switch position and restore mains. If mains is present and the selector is correct, the unit has failed and should be replaced rather than repaired in the field.
Output shuts down and recovers on its own, repeatedly
- Possible cause: overload (110–140% of rated power), over-voltage, or over-temperature protection engaging. All three use hiccup mode with auto-recovery, so all three look identical from outside.
- How to check: measure actual DC current with the screen at full white, then measure the supply case and cabinet ambient temperature. A clamp meter plus a thermometer usually identifies which protection is firing.
- Fix: if current exceeds the planning ceiling, split the load across an additional supply. If the cabinet is hot, fix the airflow. On a fanless unit this is the critical step — there is no fan to mask a marginal thermal design.
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, 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.
- Fix: shorten the run, increase the conductor cross-section, or split the feed. Then trim the ADJ. potentiometer so the module input reads its specified 5V under load — not so the supply terminal reads 5V.
Supply is hot to the touch but still running
- Possible cause: normal operation near the top of the derating curve. A fanless supply dissipates heat through its case, so the case is the heatsink and will feel hot when loaded.
- How to check: compare the measured ambient against the derating curve at your actual load. If the load is inside the curve for that ambient, the temperature is expected behaviour.
- Fix: if it is outside the curve, reduce load or improve cabinet ventilation. Do not add an external fan blowing directly into the case as a substitute for a proper thermal design — that reintroduces the dust ingress the fanless design was chosen to avoid.
LRS-200-5 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.
| Document | What it covers |
|---|---|
| LRS-200-5 datasheet (PDF) | Full specification table, derating curve, block diagram, mechanical drawing and terminal pin assignment |
| LRS-200 series product page | All eight 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 215 × 115 × 30mm 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-200-5: Frequently Asked Questions
QDoes the Mean Well LRS-200-5 have a fan?
No. The LRS-200-5 is cooled by free air convection and contains no fan. MEAN WELL’s catalogue states that the 150W and 200W models are convection cooled, while forced air cooling by built-in DC fan begins at the 350W model.
QHow many watts is the LRS-200-5?
200W. At 5V and 40A the arithmetic gives exactly 200W, so unlike some other models in the LRS range the series name matches the actual 5V rating. The LRS-350-5, by comparison, delivers 300W.
QHow many amps does the LRS-200-5 output?
40A at 5V, with a current range of 0 to 40A. The 40A ceiling is shared across the whole eight-model LRS-200 series, which is why the lower-voltage models produce less total wattage than the higher-voltage ones.
QDoes the LRS-200-5 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, one of those families is the correct choice instead.
QWhat is the difference between the LRS-200-5 and the LRS-350-5?
Output current, rated power and cooling. The LRS-200-5 delivers 5V at 40A for 200W and is fanless; the LRS-350-5 delivers 5V at 60A for 300W and uses a built-in fan. Both share the same 215 x 115 x 30mm case and terminal layout.
QCan the LRS-200-5 deliver 150% peak power?
Not for the 5V model. The datasheet specifies a 150% peak load capability for up to one second on the 12V to 48V models in the series. That capability does not extend to the 5V model, so an LRS-200-5 should be sized on its 200W continuous rating.
QWhat is the efficiency of the LRS-200-5?
Typical efficiency is 87% at the 5V output, measured at 230VAC input and rated load. Notably this is higher than the 83.5% of the larger LRS-350-5 at the same voltage, so the smaller model runs cooler for the power it delivers.
QWhat are the dimensions of the LRS-200-5?
215mm long by 115mm wide by 30mm high, weighing 0.66kg, with 15 units per carton. The 30mm height is the low-profile dimension that lets the unit fit inside a standard 1U LED display cabinet.
QHow do I wire the LRS-200-5 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. Confirm the 115/230VAC selector switch position before applying mains.
QCan I use the LRS-200-5 in a sealed enclosure?
That is the one configuration where the fanless design works against you. Convection cooling relies on hot air rising and escaping, so a sealed box traps the heat with no mechanism to remove it. Ventilated cabinets are strongly preferred for this model.
QWhat is the working temperature range of the LRS-200-5?
Minus 25 to plus 70 degrees Celsius with derating, and the derating curve is specified for horizontal mounting. Operating altitude goes up to 5,000 metres, with an additional ambient derating of 5 degrees Celsius per 1,000 metres above 2,000 metres.
QHow many LED modules can one LRS-200-5 power?
It depends on the maximum power rating of your modules. Divide the usable load by the module maximum power to get the count. As an illustrative example, a 160W usable budget at an 80% planning ceiling divides into six 25W modules. Always size from your own module datasheet.
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