Released 2013
Warranty Period 5-year (Refer to Instruction Manuals)

This power supply is manufactured by SMD technology. The stress to P.C.B like twisting or bending causes the defect of the unit, please handle the unit with care
*Make sure necessary tests will be carried out on your end equipment with the power supply installed in accordance with any required EMC/EMI regulations.

Features of GHA300F-48

• High Power density: 14.3W/inch3
• High efficiency 92% typ (Input Voltage 230V, Output Voltage 24V)
• 3x 5standard footprint
• Fits 1U applications
• Industrial and Medical safety approvals
• Low leakage current
• With Remote On/Off (Optional)
• With AUX1 (12V) , AUX2 (5V) (Optional)
• No minimum load is required

Ordering Information and Options

GH(1)  A(2)  300(3)  F(4)  -  (5)  -  (6)  

(1) Series name
(2) Single output
(3) Output wattage
(4) Universal input
(5) Output voltage
(6) Optional
  T3: mounting hole M3
  J1: VH (J.S.T.) connector type
  J3:Horizontal input connector
       VH (J.S.T.) connector type
  R3: with Subfeatures(5VAUX, 12VAUX, Remote, Power good)

Specification is changed at option, refer to Instruction manual.

Recommended EMI Filters


Contents Specifications
Input Voltage AC90 - 264V 1Φ *
Output Wattage 302.4W
Voltage/Current 48V 6.3A Forced Air Cooling +50℃
48V 2.1A Convection Cooling +40℃
48V 1.1A Convection Cooling +50℃
Adjustable  Voltage Range 43.20 - 52.80V
Protection Circuit And Others Overcurrent Protection Works over 105% of rating and recovers automatically
Overvoltage Protection 55.20 to 67.20V
Remote ON/OFF Optional
Remote Sensing -
Others -
Operating Temperature/Humidity -20 to +70℃, 20 - 90%RH (Non condensing)
Safety And Noise Regulations Agency Approvals (At only AC input) UL60950-1, ANSI/AAMI ES60601-1, C-UL (CSA60950-1, CAN/CSA60601-1) , EN60601-1 3rd, EN62368-1
Conducted Noise Complies with FCC-B, VCCI-B, CISPR11-B, CISPR22-B, EN55011-B, EN55022-B
High Attenuation Complies with IEC61000-3-2 (class A) *
Others Dimensions (WxHxD) 76.2x35x127mm [3.0x1.4x5.0 inches]
Weight 400g max
Cooling Method Convection, Forced air (Require external fan)
Warranty Period 5-year (Refer to Instruction Manuals)
  • * For further information and how to use, please see in Cosel product catalog.

Block Diagram

Documents Download

Technical Data
  • * For another documents aren't listed, please feel free to contact to a Cosel representative.

Optional Parts


Category Part Number Description PDF DXF
H-IN-17 Mating harness for input of the connector type power supply. -
H-IN-18 Mating harness for input of the connector type power supply with J option. -
H-SN-34 Harness for using all function. -
H-SN-35 Harness for using AUX(5V) remote control and PG terminal. -
H-SN-38 Harness for using all functions. -
H-SN-39 Harness for using AUX(5V) remote control and PG terminal. -
H-SN-79 Harness for using all functions. (AWG24 for 1A) -
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.