Serviceline Industrial Sensors
Serviceline Explosion Protection

Power Supply KFA6-STR-1.24.4

  • 115/230 V AC supply
  • Output 24 V DC, 4 A
  • Fused output
  • Power Rail connection

Please note: All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  KFA6-STR-1.24.4

Product Description
Power supply, 24 V, 4 A
Connectionterminals 1(PE), 2 (L1), 3 (N)
Rated voltage92 ... 265 V AC , 47 ... 63 Hz
Rated current2.1 ... 0.84 A
Fusingback-up fuse :
B characteristic: 16 A
B characteristic: 10 A
C characteristic: 6 A
Failure override time> 75 ms / 230 V AC ; 5 ms / 115 V AC
Connectionterminals 4+, 6-
Current0 ... 4 A , Power Rail limiting by means of fuse 4 AT , electron. limitation typ. 4.6 A
Output rated operating currentmax. 4 A
Ripple< 100 mV ss
Efficiencytyp. 87 %
Overvoltage protected< 28 V DC
Display elementsLED
Labelingspace for labeling at the front
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 55011:2009+A1:2010 , EN 61000-3-2:2014 , EN 61000-3-3:2013 , EN 61000-6-1:2007 , EN 61000-6-2:2005 , EN 61000-6-3:2007+A1:2011 , EN 61000-6-4:2007+A1:2011
Low voltage
Directive 2014/35/EUEN 60950-1:2006+A11:2009+A12:2011+A1:2010+A2:2013+AC:2011
Degree of protectionIEC 60529:2001
Ambient conditions
Ambient temperature-20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protectionIP20
Connectionself-opening connection terminals
Core cross-sectionmax. 2 x 2.5 mm2
Massapprox. 800 g
Dimensions140 x 103.5 x 99 mm (5.5 x 4.1 x 3.9 inch)
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001

Documents: KFA6-STR-1.24.4

ManualsLanguageFile TypeFile Size
Manual Isolated Barriers K-systemENGPDF760 KB
Manuel pour Barrières Isolées de Système KFRAPDF759 KB
Handbuch Trennbarrieren K-SystemGERPDF745 KB
Manual Isolated Barriers K-systemRUSPDF4107 KB

Approvals+Certificates: KFA6-STR-1.24.4

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-2862APDF311 KB
Kazakhstan Russia Belarus Pepperl+Fuchs Declaration of Conformity Low Voltage DirectiveRU D-DE.AA71.B.00184PDF1404 KB

Function: KFA6-STR-1.24.4

This regulated power supply provides 24 V DC, at 4 A. It features removable terminals, LED fault indication, and mounts directly on the Power Rail.

Designed with a replaceable fuse and LED, it will provide a green visual indication for normal operation or a flashing red indication if a fault occurs.

Attention: Ignoring the safety instructions (i. e., touching hot sections when the device is open, handling malpractices) can be extremely dangerous.

When exceeding the values stated in the technical data, there is a danger of overheating. As a result, the operation of the power supply and its electrical safety may be impaired.

Before starting installation or service, switch mains off. Do not plug or unplug powered!