1 Phase Control-/ Isolating-Transformer, Safety Transformer with spring clip terminals (screwless connection)STF 25 - 2500VA IEC/DIN EN61558-2-2 /-4 /-6 and UL1446

overviewtechnical dataPDF data sheet

1 phase control transformer

according to IEC/EN61558-2-2 for power supply of control circuits in machinery, terminal blocks (VDE0113/ EN60204).

Isolating transformer

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

Safety transformer

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

Specifications:

  • Ease-of use screwless connectors (top side wiring and fixing). Use a screwdriver to open spring clip mechanism.
  • Due to the use of high quality insulating materials and special insulation design, STF series can be used as control-, isolating or safety transformer.
  • Our UL insulation system guarantees global application possibilities.
  • Inrush currents and short circuit behaviour are optimised for use with motor-circuit switches, especially equipped with primary circuit thermal or magentic switching functions.
  • Transformers are fully vacuum impregnated.
  • Spring clip terminals contact proof according to VBG4.
  • For voltage adjusting purposes, primary winding offers taps at ±5% of nominal input voltage.
  • Transformers are protection class I ready.
  • 2 blade terminals 6.3 x 0.8 for ground wire connection.
  • Mounting via angle brackets, any mounting position or angle possible.

 

 

 

1 Phase Control-/ Isolating Transformer, Safety Transformer

with spring clip terminals IEC/EN61558-2-2/-4/-6 UL1446

Input voltage 100 V … 600 V +/-5%
Output voltage 12 V … 600 V
Rated frequency 50/60 Hz
Output power 25 VA … 2500 VA
Max. ambient temperature 40°C
UL insulation system B3 Standard
Insulation class (IEC85) B 130°C
Fire protection class UL94HB (V-0 possible)
Open transformer
degree of protection		 IP00
Protection class I ready
  • earth conductor welded 2 flat connection 6,3 x 0,8mm
  • Any mounting position or angle possible
  • Spring clip terminals contact proof according to BGV A3
  • Transformer completely vacuum impregnated

Overview: PRI 230V / SEK 24V (Yellow coloured rows: storage types)

Rated
power
VA		  

Short-time
power
at cos (phi) 0.5
VA
Short circuit
voltage
Uk %
Rated
input
current
at

230V
Transformer
safety
switch
e.g. PKZM0
Dimensions
approx. mm
Cu
weight
KG
Total
weight
KG
Type and
Ordering No.
A B C D E F
25 56 9,56 0,14 0,1-0,16/ 0,16 66 70,5 82 50 42 3,6×6 0,14 0,75 STF002230024
40 91 9 0,22 0,16-0,25/ 0,25 66 76,5 77 50 46 4,8×8 0,17 0,88 STF004230024
50 107 9,85 0,28 0,26-0,4/ 0,35 78 74,5 88 56 45 4,8×9 0,25 1,1 STF005230024
75 163 9,77 0,4 0,4-0,63/ 0,5 84 77,5 94 64 45 4,8×9 0,27 1,35 STF007230024
100 235 8,4 0,53 0,4-0,63/ 0,6 84 91,5 94 64 61 4,8×9 0,3 2 STF010230024
160 360 8,22 0,82 0,63-1/ 0,9 96 87,5 105 84 61 5,8×9 0,46 2,25 STF016230024
200 478 7,1 1 1-1,6/ 1,1 96 98,5 105 84 71 5,8×9 0,55 2,85 STF020230024
250 645 6,36 1,24 1-1,6/ 1,35 96 112,5 105 84 86 5,8×9 0,57 3,6 STF025230024
320 760 6,14 1,56 1,6-2,5/ 1,65 120 97,5 123 90 68 5,8×12 1,1 4,8 STF032230024

Overview: PRI 230V / SEK 24V (Yellow coloured rows: storage types)

Rated
power
VA
Short-time
power
at cos (phi) 
0.5
VA
Short 
circuit
voltage
Uk %
Rated
input
current
at 230V
Transformer 
safety 
switch
e.g. PKZM0
Dimensions
approx. mm
Cu
weight
KG
Total
weight
KG
Type and
Ordering No.
A B C D E F
25 55 9,58 0,14 0,1-0,16/ 0,16 66 70,5 82 50 42 3,6×6 0,14 0,75 STF002230024
40 90 9,56 0,22 0,16-0,25/ 0,25 66 76,5 77 50 46 4,8×8 0,17 0,88 STF004230024
50 106 9,98 0,28 0,26-0,4/ 0,35 78 74,5 88 56 45 4,8×9 0,25 1,1 STF005230024
75 165 9,49 0,4 0,4-0,63/ 0,5 84 77,5 94 64 45 4,8×9 0,27 1,35 STF007230024
100 233 8,5 0,53 0,4-0,63/ 0,6 84 91,5 94 64 61 4,8×9 0,3 2 STF010230024
160 358 8,35 0,82 0,63-1/ 0,9 96 87,5 105 84 61 5,8×9 0,46 2,25 STF016230024
200 480 7 1 1-1,6/ 1,1 96 98,5 105 84 71 5,8×9 0,55 2,85 STF020230024
250 647 6,18 1,24 1-1,6/ 1,35 96 112,5 105 84 86 5,8×9 0,57 3,6 STF025230024
320 752 6,27 1,56 1,6-2,5/ 1,65 120 97,5 123 90 68 5,8×12 1,1 4,8 STF032230024

Overview: PRI 230V / SEK 24V  (Yellow coloured rows: storage types)

Rated
power
VA
Short-time
power
at cos (phi)
0.5
VA
Short
circuit
voltage
Uk %
Rated
input
current
at 230V
Transformer
safety
switch
e.g. PKZM0
Dimensions
approx. mm
Cu
weight
KG
Total
weight
KG
Type and
Ordering No.
A B C D E F
25 55 9,26 0,09 0,1-0,16/ 0,1 66 70,5 82 50 42 3,6×6 0,14 0,75 STF002400230
40 94 8,95 0,14 0,1-0,16/ 0,14 66 76,5 77 50 46 4,8×8 0,17 0,88 STF004400230
50 112 9,15 0,16 0,16-0,25/ 0,17 78 74,5 88 56 45 4,8×9 0,25 1,1 STF005400230
75 166 9,1 0,23 0,16-0,25/ 0,24 84 77,5 94 64 45 4,8×9 0,28 1,35 STF007400230
100 244 7,8 0,3 0,25-0,4/ 0,35 84 91,5 94 64 61 4,8×9 0,32 2 STF010400230
160 370 7,7 0,47 0,4-0,63/ 0,55 96 87,5 105 84 61 5,8×9 0,49 2,25 STF016400230
200 482 7,15 0,57 0,4-0,63/ 0,63 96 98,5 105 84 71 5,8×9 0,52 2,85 STF020400230
250 670 5,6 0,71 0,63-1/ 0,8 96 112,5 105 84 86 5,8×9 0,67 3,6 STF025400230
320 817 5,3 0,91 0,63-1/ 1 120 97,5 123 90 68 5,8×12 0,97 4,1 STF032400230
400 1115 4,57 1,11 1-1,6/ 1,3  120  108,5  123  90  79  5,8×12  1,1  5,1 STF040400230
500 1395 4,4 1,37 1-1,6/ 1,5  135  110  134  104  86  5,8×12  1,43  6,3  STF050400230
630 1630 4,37 1,71 1,6-2,5/ 1,85  150  110  146  122  82  7×15  1,95  7,7  STF063400230
800 2245 3,88 2,15 1,6-2,5/ 2,3  150  126  146  122  98  7×15  2,1  9,7  STF080400230
1000 2568 3,67 2,68 2,5-4/ 2,9  174  114  160  135  86  7×15  3,1  11,2  STF100400230
1250 3255 3,9 3,29 2,5-4/ 3,4  174  128  160  135  102  7×15  3,2  12,7  STF125400230
1600 4560 3,28 4,19 4-6,3/ 4,3  174  138  160  135  108   7×15  3,45  14,4  STF160400230
2000 5395 3,19 5,24 4-6,3/ 5,4  192  138  179  150  104  10×18  4,2  16,4  STF200400230
2500 7020 2,86 6,49 6,3-10/ 6,6  192  154  179  150  120  10×18  5,1  20,3  STF250400230

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