CQHS300

CQHSseries

CQHS250
CQHS300
CQHS350

Active (NRND)
UL60950-1
C-UL (CSA60950-1)
EN62368-1

Rated Input: DC36 - 76V
Rated Output Wattage: 300W
Rated Output Voltage: 32V,50V

• Compact DC-DC Converter in the Standard "BRICK SIZE"
• Built-in remote ON/OFF

Free warranty period 5-year

Technical features

Adjustable Output Voltage
Remote Control

Heat sink

Type	Model number	Description	PDF	DXF
Heat sink
	F-QB-F1	Heatsink for TUNS50, CQHS300, CQHS350, DHS50, DHS100 series. (Horizontal style)	PDF download	-
	F-QB-F2	Heatsink for TUNS50, CQHS300, CQHS350, DHS50, DHS100 series. (Vertical style)	PDF download	-
	F-QB-F3	Heatsink for TUNS50, CQHS300, CQHS350, DHS50, DHS100 series. (Horizontal style)	PDF download	-
	F-QB-F4	Heatsink for TUNS50, CQHS300, CQHS350, DHS50, DHS100 series. (Vertical style)	PDF download	-
	F-QB-F5	Heatsink for TUNS50, CQHS300, CQHS350, DHS50, DHS100 series. (Horizontal style)	PDF download	-
	F-QB-F6	Heatsink for TUNS50, CQHS300, CQHS350, DHS50, DHS100 series. (Vertical style)	PDF download	-

Instruction manual
Optional parts (sold separately)

*Some documents may not be listed. Please contact us for more details.

CAD data download

CAD data	DXF	Standard model

Safety certification
EU Declaration of Conformity
UK Declaration of Conformity

CQH⁽¹⁾ S⁽²⁾ 300⁽³⁾ 48⁽⁴⁾ 50⁽⁵⁾ - □⁽⁶⁾

(1) Series name
(2) Single output
(3) Output wattage
(4) Input voltage
  48: DC36 - 76V
(5) Output voltage
(6) Optional
  R: with Remote ON/OFF
    Positive logic control
  T: with Mounting hole φ3.4 thru

Data sheet download

CQHS300 specifications (overview)

Product		CQHS3004832	CQHS3004850
Input voltage		DC36 - 76V	DC36 - 76V
Output	Wattage	300.8W	300W
	Voltage・Current	32V 9.4A	50V 6.0A
	Voltage variable range	Fixed (TRM pin open), adjustable by external resistor27.2 - 35.2V	Fixed (TRM pin open), adjustable by external resistor45.0 - 55.0V
Applicable standards	Safety Certifications	UL60950-1, C-UL (CSA60950-1) , EN62368-1
Structure	External dimensions (W×H×D)	57.9x12.7x36.8mm [2.28x0.5x1.45 inches]
Structure	Cooling method	Conduction cooling (e.g. heat radiation from the aluminum base plate to the attached heat sink)
Technical data	Characteristic data
	Estimated life data	-	-
	EMC data
	Reliability
	MTBF

* For further information and how to use, please see in Cosel product catalog.