Discontinued (March, 2017)

Released 1986

Recommended Model for Replacement

Type Product Name Released Catalog
Instruction Manuals
Documents for replacement
Enclosed type PBW50F-12 2005
  • Catalog
  • Instruction Manuals
  • Documents for replacement
    • * For further information and how to use, please see in Cosel product catalog.
    • * Please use them together with the mentioned product to get required outputs.

    Features of MMB50A-4

    • Built-in inrush current, overcurrent and overvoltage protection circuits
    • Regulated V1, V2
    • V1 isolated from V2

    Ordering Information and Options

    MMB(1)  50A(2)  -  1(3)  -  (4)  

    (1) Series name
    (2) Output wattage
    (3) Output voltage combination
    (4) Optional
      C: with Coating
      J: Connector type
      N: with Cover


    Contents Specifications
    Input Voltage AC85 - 132V 1Φ or DC110 - 170V
    Output Wattage 50.4W
    Voltage/Current V1 :+12V 2.1A
    V2 :+12V 2.1A
    Adjustable  Voltage Range 10.8 - 13.2V
    Protection Circuit And Others Overcurrent Protection Works at over 105% of rating (V2 works at peak current) and recovers automatically
    Overvoltage Protection Works at 115 - 140% of rating
    Remote ON/OFF -
    Remote Sensing -
    Others -
    Operating Temperature/Humidity -10 to +65℃, 20 - 95%RH (Non condensing) (Refer to DERATING CURVE)
    Safety And Noise Regulations Agency Approvals (At only AC input) UL60950-1, C-UL Complies with DEN-AN
    Conducted Noise Complies with FCC-B
    High Attenuation -
    Others Dimensions (WxHxD) 36x93x155mm (without terminal block and screw)
    Weight 400g max
    Cooling Method Convection
    Warranty Period 2-year
    • * For further information and how to use, please see in Cosel product catalog.

    Documents Download

    Technical Data
    • * For another documents aren't listed, please feel free to contact to a Cosel representative.
    Table1 Product Status Information
    No. Product Status Definition
    1 New Product New Product. Recommended for new design.
    2 Recommended Recommended for new design.
    3 blank Product in mass production
    4 NRND Not recommended for new design.
    5 To be discontinued PDN (Product Discontinuation Notice) is issued and LTB (Last Time Buy) is under consideration.
    6 Discontinued LTB order is no longer available.