| Dimensions |
181.5 × 62 × 35 mm (L × W × H); case 991A. Drawing tolerance: ±1 mm. |
| Construction |
Fully isolated plastic case with terminal-block input and output. |
| Mounting drawing references |
The drawing shows two R2.5 mm and two R9 mm open mounting features and 6.3 mm end offsets. The left lower edge offset is 16.3 mm; the right upper edge offset is 16.6 mm. A 2.3 mm adjustment-feature projection is marked. |
| Case-temperature measuring point |
The Tc measuring point is 90.75 mm from the right end and 31 mm from the upper edge in the top view. These are location dimensions, not a case-temperature rating. |
| Input and output terminals |
TB1: pin 1 AC/L, pin 2 AC/N, pin 3 FG; SWITCHLAB MB310-75003. TB2: pin 1 +V, pin 2 −V; SWITCHLAB MB310-75002. |
| Output adjustment controls |
Vo ADJ adjusts output voltage; Io ADJ adjusts output current. The notes identify SVR1 for voltage and SVR2 for current. |
| Switching frequency |
90 kHz at 115 VAC; 120 kHz at 230 VAC. |
| Load application |
Suitable for LED lighting and moving signs, subject to the application restrictions stated here. Use to drive LEDs directly; the datasheet does not support use with additional drivers. The constant-current region is 70–100% of rated voltage, with a hiccup region below it. |
| Constant-current compatibility |
The highest operating voltage in constant-current mode depends on the end-system configuration. Contact MEAN WELL if compatibility issues arise. |
| Efficiency graph scope |
The efficiency-versus-load graph illustrates the 48 V model at 115 VAC and 230 VAC; use the model-specific typical efficiency listed above for this selection. |
| Accessory scope |
The terminal part numbers identify the connector references in the drawing. No dedicated MEAN WELL accessory order code is specified in these series pages. |
| Packing and weight |
410 g catalog packing reference per unit, not a measured net weight. 30 pieces per carton; 13.3 kg per carton; 0.67 CUFT. |
| Datasheet location |
PDF pages 7–9; dated 2026-02-09. |