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The Mean Well NET‑75B is a robust, compact, enclosed AC/DC converter engineered for use in industrial, instrumentation, and embedded electronics systems. It delivers three regulated outputs — +5 V, +12 V, and –12 V — making it suitable for mixed logic, analog, and bipolar circuits. With universal input (85–264 VAC or 120–370 VDC), it can be used in a wide variety of mains environments. Despite its small dimensions, it provides reliable protection features (short circuit, overload, overvoltage) and efficient convection cooling without a fan. The NET‑75B is also RoHS‑compliant and certified to safety standards (CB, cURus).
Voltage Range (AC): 85 to 264 VAC
Voltage Range (DC): 120 to 370 VDC
Frequency: 47 to 63 Hz
Input Current (typical):
1.5 A at 115 VAC
0.9 A at 230 VAC
Inrush Current (Cold Start): 45 A max
Leakage Current: < 2 mA @ 240 VAC
| Output | Voltage | Current | Power |
|---|---|---|---|
| CH1 | +5 V | 5.0 A | 25 W |
| CH2 | +12 V | 2.8 A | 33.6 W |
| CH3 | –12 V | 0.5 A | 6 W |
Total Power: 65 W max
Voltage Adjustment: Available for outputs
Efficiency (typical): ~78%
Hold-up Time: ~50 ms @ 230 VAC
Rise Time: ~30 ms
Setup Time: ~500 ms
Overload Protection: Auto-recovery (hiccup mode)
Overvoltage Protection: Output shutdown / auto-recovery
Short Circuit Protection: Yes
Overtemperature Protection: Not typically included in this model
Dimensions (L × W × H): 159 × 97 × 38 mm
Weight: Approximately 0.52 kg
Case Type: Metal, enclosed
Operating Temperature: –20 °C to +60 °C (derating required above 50 °C)
Storage Temperature: –40 °C to +85 °C
Operating Humidity: 20% to 90% RH (non-condensing)
Storage Humidity: 10% to 95% RH (non-condensing)
Vibration Resistance: 10–500 Hz, 2G, 60 min each axis
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