MW Switching Power Supplies NED-35B NED-50B NED-75B/A/B Dual-group Dual-output NED-100B

NED - 75B is a 73W dual - output AC/DC switching power supply launched by Mean Well, suitable for elevator door machines, security equipment, industrial control systems, etc. It provides stable dual - group DC output of 5V/24V to meet the power supply needs of multiple components. The input is a universal voltage of 85-264VAC full range, compatible with 120-370VDC input. CH1 outputs 5V/5A, CH2 outputs 24V/2A, with a total power of 73W. The voltage accuracy is ±2.0% for CH1 and ±6.0% for CH2, the line regulation is ±0.5% for CH1 and ±1.0% for CH2, and the load regulation is ±1.5% for CH1 and ±3.0% for CH2. The ripple and noise are ≤120mVp - p for CH1 and ≤200mVp - p for CH2. The operating temperature ranges from - 30°C to +70°C, the storage temperature ranges from - 40°C to +85°C, and the operating humidity is 20%-90% RH (non - condensing). Its size is 159×97×38mm, the protection class is IP20, it adopts free air convection cooling and comes with a 2 - year warranty.

Its core features include dual independent outputs, which can simultaneously supply power to the elevator control board (5V) and door machine/brake (24V), suitable for the coordinated power supply scenario of multiple elevator components. The full - range AC input is compatible with global power grids and supports wide - voltage DC input, adapting to complex power supply environments. It is equipped with short - circuit, overload and over - voltage protection. Short - circuit/overload protection adopts hiccup mode (automatic recovery after fault removal), and over - voltage protection adopts shutdown mode (recovery after restart), ensuring equipment safety. It uses free air convection cooling without a fan, reducing the maintenance cost of the elevator machine room. It has undergone 100% full - load burn - in test, featuring high reliability, which is suitable for the long - term continuous operation condition of elevators.