1AC PCB Transformer, uncovered version, encapsulated coil, additional mounting optionsPTB 4.4 - 26VA according to IEC/EN61558-2-4/-6

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Isolating Transformer

according to IEC/EN61558-2-4 for general applications, e.g. galvanic isolation for devices according to VDE0700/EN60335 regulations.

Safety Transformer

according to IEC/EN61558-2-6 for general applications with double or reinforced insulation and max. output voltage of 50 V, e.g. galvanic isolation for devices according to VDE0805/EN60950 regulations.

Specifications

  • Connections: PCB with solder pins Ø 0.8mm. Recommended board mounting holes: 1.2mm.
  • Encapsulated coil (mounting according to protection class II or III ready) allows mounting of other components close to the transformer.
  • Additionally to PT types PTB offers an integrated distant piece including mounting option.
  • Due to innovative vacuum impregnation in polyester varnish, the noise level is extraordinary low. Any mounting position or angle possible.Short-circuit proof designs on request (combined with external fuse and built-in temperature limiter)
  • Catalog mentioned lead-wire spacing and pin assignment is standard.

1 phase isolating-/ safety PCB type transformer according to IEC/EN61558-2-4; EN61558-2-6; coil with additional mounting option 2 chamber version

Input voltage 100 … 400V ( 1 winding )
Output voltage 6 … 50V ( 1 oder 2 windings )
Rated frequency 50/60 Hz
Power range 4,4 … 26VA
Max. ambient temperature 40°C
UL-Insulation system (optional) OBJY2.E181051
Insulation class (IEC85) B 130°C
Fire protection class UL94HB (V-0 possible)
Protection class (ready) II bzw. III
  • Connections: Solder pins, diameter = Ø 0.8 mm
  • Version with 2 winding chambers
  • Additional mounting option
  • Integrated spacer
  • Any mounting position or angle possible
  • Transformer completely vacuum impregnated

Ua = Rated output voltage

Power
VA
Open-circuit
voltage Ua x …
Dimensions
approx. mm
Copper weight
KG
Total weight
KG
Core size Type
A B C D E F a b c
4,4 1,51 42,0 41,5 35,4 30,2 35,0 28,0 25,0 15,0 25,0 0,,03 0,18 EI42/14,8 PTB044
8,0 1,36 48,0 47,5 43,0 35,0 40,0 32,0 25,0 15,0 27,5 0,042 0,26 Ei48/16,8 PTB080
11,5 1,30 48,0 47,5 43,0 38,6 40,0 32,0 25,0 15,0 27,5 0,055 0,32 EI48/20,5 PTB115
13,0 1,31 54,0 53,6 45,4 39,7 45,0 36,0 30,0 20,0 30,0 0,065 0,34 EI54/18,8 PTB130
20,0 1,22 60,0 57,8 50,0 43,4 50,0 40,0 30,0 20,0 32,5 0,092 0,52 EI60/21 PTB200
26,0 1,20 60,0 57,8 50,0 48,0 50,0 40,0 30,0 20,0 32,5 0,10 0,58 EI60/25 PTB260