MPN

MEAN WELL KNX Switched Mode DIN Rail Power Supply, 180 → 264 V ac / 176 → 280V dc ac, dc Input, 30V dc dc

RS stock no.:: 183-4139
Distrelec Article No.:: 303-72-435
Mfr. Part No.:: KNX-40E-1280
Manufacturer:: MEAN WELL

MEAN WELL KNX Switched Mode DIN Rail Power Supply, 180 → 264 V ac / 176 → 280V dc ac, dc Input, 30V dc dc

Bulk discount available

Subtotal (1 unit)*

R 2 117,89

(exc. VAT)

R 2 435,57

(inc. VAT)

Add 1 unit to get free delivery

Orders below R 1 500,00 (exc. VAT) cost R 120,00.

Temporarily out of stock

24 unit(s) shipping from 23 February 2026
Plus 24 unit(s) shipping from 25 May 2026

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit
1 - 4	R 2,117.89
5 - 9	R 2,064.94
10 - 24	R 2,002.99
25 - 49	R 1,922.87
50 +	R 1,845.96

*price indicative

RS stock no.:: 183-4139
Distrelec Article No.:: 303-72-435
Mfr. Part No.:: KNX-40E-1280
Manufacturer:: MEAN WELL

Specification

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	MEAN WELL
	Series	KNX
	Type	Switched Mode
	Electrical Phase	1
	Number of Outputs	1
	AC or DC Input Voltage	ac, dc
	Input Voltage	180 → 264 V ac / 176 → 280V dc
	AC or DC Output Voltage	dc
	Output Voltage	30V dc
	Output Current	1.28A
	Dimensions	72 x 57 x 90mm
	Width	72mm
	Depth	57mm
	Height	90mm
	Ripple And Noise	100mV Pk-Pk
	Maximum Temperature	+70°C
	Minimum Temperature	-30°C
	Mounting Type	DIN Rail Mount
	Special Features	3 Years Warranty, Compact Size with 4SU Width, Cooling by Free Air Convection, Safety Extra Low Voltage (SELV)
	MTBF	487.4kh
	Standards Met	CE Certified, DIN EN60715, EN50491-3, EN50491-5-2,-5-3, EN61000-3-2,-3-3, EN61000-4-2,3,4,5,6,8,11, EN61558-1, EN61558-2-16
	Efficiency	86%

	Select all
	Brand MEAN WELL
	Series KNX
	Type Switched Mode
	Electrical Phase 1
	Number of Outputs 1
	AC or DC Input Voltage ac, dc
	Input Voltage 180 → 264 V ac / 176 → 280V dc
	AC or DC Output Voltage dc
	Output Voltage 30V dc
	Output Current 1.28A
	Dimensions 72 x 57 x 90mm
	Width 72mm
	Depth 57mm
	Height 90mm
	Ripple And Noise 100mV Pk-Pk
	Maximum Temperature +70°C
	Minimum Temperature -30°C
	Mounting Type DIN Rail Mount
	Special Features 3 Years Warranty, Compact Size with 4SU Width, Cooling by Free Air Convection, Safety Extra Low Voltage (SELV)
	MTBF 487.4kh
	Standards Met CE Certified, DIN EN60715, EN50491-3, EN50491-5-2,-5-3, EN61000-3-2,-3-3, EN61000-4-2,3,4,5,6,8,11, EN61558-1, EN61558-2-16
	Efficiency 86%

Datasheet KNX-40E-1280

COO (Country of Origin):: CN

EIB/KNX Power Supply with Integrated Choke
Compact Size with 4SU Width
Suitable Extra Low Voltage(SELV)
180-264 VAC input
Protections: Short Circuit/ overload (Short-Circuit-Proof)/ Over Voltage
Cooling by free air convection
Isolation Class I
LED Indicator for Normal Operation, bus reset and bus overload
Installed on DIN rail TS-35/7.5 or 15
Over Voltage Category III
100% Full Load Burn-in Test
Applications
Intelligent Home Control
Modern Building Automation
Lighting Control
HVAC System
Security System
Blinds and Shutters
Monitoring Systems
Energy Management
Alarm Monitoring

Note

Available on EPLAN.

MEAN WELL KNX Switched Mode DIN Rail Power Supply, 180 → 264 V ac / 176 → 280V dc ac, dc Input, 30V dc dc

Add 1 unit to get free delivery

Note

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