Name: MEAN WELL DLP-04 series: DALI bus power supply - DLP-04L
Brand: MEAN WELL
SKU: DLP-04L
Price: 56.19 USD
Availability: InStock

MEAN WELL DLP-04 series: DALI bus power supply - DLP-04L

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Description

DLP-04L — DALI bus power supply

MEAN WELL DLP-04L supplies a DALI lighting-control bus with 16 V nominal output, 240 mA guaranteed current and 3.84 W rated power. This low-profile enclosure measures 145 × 38 × 22 mm and has no LED status display.

Download MEAN WELL DLP-04 Datasheet (PDF)
Download MEAN WELL LED Installation Reference (PDF)

DLP-04 series specifications, installation drawings and system timing: combined catalog pages 9–15, dated 2026-04-27.

Electrical ratings

Parameter	Details
Bus output	16 V nominal; 15.3–18.7 V DC operating range.
Supply-current limits	240 mA rated and guaranteed supply current; 250 mA maximum supply current. Design the bus load to the 240 mA operating budget.
Rated output power	3.84 W.
Ripple and noise	50 mVp-p maximum, measured with 20 MHz bandwidth and a 12-inch twisted-pair wire terminated by parallel 0.1 µF and 47 µF capacitors.
Input supply	90–264 VAC, 47–63 Hz, or 120–370 VDC. The catalog does not state a DC polarity mapping for the AC input terminals; confirm the manufacturer’s DC connection instructions before DC use.
AC current	0.1 A typical at 115 VAC; 0.06 A typical at 230 VAC. The separate model-label rating is 0.4 A at 100–240 VAC.
No-load consumption	Less than 0.5 W.
Setup and rise time	250 ms setup; 50 ms rise at 115 VAC and 230 VAC.
Hold-up time	70 ms at 230 VAC; 16 ms at 115 VAC, at full load.
Inrush current	Cold start: 20 A typical at 230 VAC.
Leakage current	0.5 mA at 240 VAC.
Short-circuit protection	Constant-current limiting; recovers automatically after the fault is removed.
Overvoltage protection	23.6–27 V; output voltage shuts off with zener-diode clamping. Automatic overvoltage recovery is not specified.
Temporary AC withstand	The feature list specifies 300 VAC for 5 seconds. This is a temporary withstand condition, not an extension of the 264 VAC continuous input limit.

Installation and model configuration

Parameter	Details
Construction	Class II construction without an FG terminal; cooled by free-air convection.
Dimensions	145 × 38 × 22 mm (L × W × H); case PLM-25.
Mounting	Use the model-specific flange/slot mounting drawing. The drawing includes Ø3.5 mm slot callouts; this model is not the DIN-rail version.
Power and bus terminals	TB3 input: pin 1 = AC/N, pin 2 = AC/L. TB4 output: pin 1 = DA−, pin 2 = DA+.
Connector and wire references	TB3: SWITCHLAB MWX201-75002EB, gray. TB4: SWITCHLAB MWX201-75002B, blue. UL 1015 18 AWG × 2C is the suggested wire specification for both input and output; this is not a claim that these cables are supplied.
Status indication	No LED status display is specified for DLP-04L.
Operating environment	−20°C to +60°C, subject to the load curve; 20–90% RH, non-condensing.
Load derating	For the vertical mounting condition shown in the curve: 100% load from −20°C through +50°C, decreasing to 80% at +60°C. The curve stops at +60°C. The static input curve shows 100% load over 90–264 VAC.
Storage environment	−40°C to +85°C; 10–95% RH.
Vibration	10–500 Hz, 2G; 10 minutes per cycle and 60 minutes along each X, Y and Z axis. Mounting test reference: IEC 60068-2-6.
Unit mass	84 g per unit; packing reference: 60 pieces / 6 kg / 0.48 CUFT.

DALI system design

Parameter	Details
Bus purpose	This unit powers the DALI control bus. It is not the LED load power supply; LED drivers and control devices require a correctly designed complete lighting system.
Bus-current budget	Keep each DALI circuit within 240 mA. A typical ballast takes less than 2 mA, so the catalog’s 64-ballast example uses 128 mA and leaves 112 mA for bus-powered control equipment. Calculate the actual consumption of all connected devices.
Bus wiring	Maximum bus cable length: 300 m. Maximum bus voltage drop: 2 V.
Electrical safety	DALI is not SELV. Apply installation procedures appropriate to mains wiring even though this power supply has Class II construction.
Power-supply start-up coordination	The catalog’s DALI system table requires the bus supply to reach its guaranteed current within 250 ms. It separately lists 400 ms maximum for an advanced bus supply; an integrated bus supply has 400 ms maximum if other bus supplies are allowed, or 5 s if no others are allowed. These are coordination categories, not alternative operating modes assigned to this product.
Receiver start-up coordination	For externally powered bus units: 450 ms maximum after an external power cycle, or 100 ms after bus power-down. Bus-powered receivers: 1,200 ms maximum after bus power-down. If external power cycles and bus power is unavailable within 350 ms, the 100 ms timing applies.
Transmitter start-up coordination	A transmitter or multi-master transmitter waits at least 110 ms. The transmitter minimum does not apply to units unable to determine bus state. The table’s interface-voltage condition is an idle bus at 10 V, measured at the bus unit.

Standards, tests and reliability

Parameter	Details
DALI standard	IEC 62386-101.
Safety approvals	BS EN/EN 61347-1; BS EN/EN 61347-2-11; EAC TP TC 004.
Isolation tests	Input-to-output withstand: 3 kVAC. Insulation resistance: 100 MΩ at 500 VDC, 25°C and 70% RH. These specifications apply to both DLP-04R and DLP-04L.
EMC emissions	BS EN/EN 55015; BS EN/EN 61547; BS EN/EN 61000-3-2 and -3; EAC TP TC 020.
EMC immunity	BS EN/EN 61000-4-2, -3, -4, -5, -6, -8 and -11; BS EN/EN 55024; BS EN/EN 61000-6-2; BS EN/EN 61204-3, light-industry level; EAC TP TC 020.
Test conditions	Unless stated otherwise, specifications are measured at 230 VAC, rated load and 25°C ambient temperature. The finished equipment must be checked again for EMC compliance.
Burn-in and MTBF	100% full-load burn-in. MTBF: at least 7,018,600 hours per Telcordia SR-332 (Bellcore), or 625,500 hours per MIL-HDBK-217F at 25°C; calculated references, not guaranteed service life.
Manufacturer warranty reference	The catalog states a 3-year manufacturer warranty, subject to the manufacturer’s applicable terms.

Manufacturer instructions

Parameter	Details
Linked installation reference	The catalogue links the LED Installation Manual as a general reference, but its explicit family list does not name DLP. Use the DLP-specific wiring and installation instructions for this bus supply. DALI signals are not SELV; apply the same working procedures as for mains voltage.
Maintenance and ventilation	The linked reference calls for isolation from the supply before installation or maintenance and protection against accidental reconnection. Keep ventilation clear and do not stack objects on the unit. Do not immerse the unit or open the case yourself; have faults examined by a qualified technician.