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 voltage100 V … 600 V +/-5%
Output voltage12 V … 600 V
Rated frequency50/60 Hz
Output power25 VA … 2500 VA
Max. ambient temperature40°C
UL insulation systemB3 Standard
Insulation class (IEC85)B 130°C
Fire protection classUL94HB (V-0 possible)
Open transformer
degree of protection
IP00
Protection classI 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.
ABCDEF
25569,560,140,1-0,16/ 0,166670,58250423,6×60,140,75STF002230024
409190,220,16-0,25/ 0,256676,57750464,8×80,170,88STF004230024
501079,850,280,26-0,4/ 0,357874,58856454,8×90,251,1STF005230024
751639,770,40,4-0,63/ 0,58477,59464454,8×90,271,35STF007230024
1002358,40,530,4-0,63/ 0,68491,59464614,8×90,32STF010230024
1603608,220,820,63-1/ 0,99687,510584615,8×90,462,25STF016230024
2004787,111-1,6/ 1,19698,510584715,8×90,552,85STF020230024
2506456,361,241-1,6/ 1,3596112,510584865,8×90,573,6STF025230024
3207606,141,561,6-2,5/ 1,6512097,512390685,8×121,14,8STF032230024

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.
ABCDEF
25559,580,140,1-0,16/ 0,166670,58250423,6×60,140,75STF002230024
40909,560,220,16-0,25/ 0,256676,57750464,8×80,170,88STF004230024
501069,980,280,26-0,4/ 0,357874,58856454,8×90,251,1STF005230024
751659,490,40,4-0,63/ 0,58477,59464454,8×90,271,35STF007230024
1002338,50,530,4-0,63/ 0,68491,59464614,8×90,32STF010230024
1603588,350,820,63-1/ 0,99687,510584615,8×90,462,25STF016230024
200480711-1,6/ 1,19698,510584715,8×90,552,85STF020230024
2506476,181,241-1,6/ 1,3596112,510584865,8×90,573,6STF025230024
3207526,271,561,6-2,5/ 1,6512097,512390685,8×121,14,8STF032230024

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.
ABCDEF
25559,260,090,1-0,16/ 0,16670,58250423,6×60,140,75STF002400230
40948,950,140,1-0,16/ 0,146676,57750464,8×80,170,88STF004400230
501129,150,160,16-0,25/ 0,177874,58856454,8×90,251,1STF005400230
751669,10,230,16-0,25/ 0,248477,59464454,8×90,281,35STF007400230
1002447,80,30,25-0,4/ 0,358491,59464614,8×90,322STF010400230
1603707,70,470,4-0,63/ 0,559687,510584615,8×90,492,25STF016400230
2004827,150,570,4-0,63/ 0,639698,510584715,8×90,522,85STF020400230
2506705,60,710,63-1/ 0,896112,510584865,8×90,673,6STF025400230
3208175,30,910,63-1/ 112097,512390685,8×120,974,1STF032400230
40011154,571,111-1,6/ 1,3 120 108,5 123 90 79 5,8×12 1,1 5,1STF040400230
50013954,41,371-1,6/ 1,5 135 110 134 104 86 5,8×12 1,43 6,3 STF050400230
63016304,371,711,6-2,5/ 1,85 150 110 146 122 82 7×15 1,95 7,7 STF063400230
80022453,882,151,6-2,5/ 2,3 150 126 146 122 98 7×15 2,1 9,7 STF080400230
100025683,672,682,5-4/ 2,9 174 114 160 135 86 7×15 3,1 11,2 STF100400230
125032553,93,292,5-4/ 3,4 174 128 160 135 102 7×15 3,2 12,7 STF125400230
160045603,284,194-6,3/ 4,3 174 138 160 135 108 7×15 3,45 14,4 STF160400230
200053953,195,244-6,3/ 5,4 192 138 179 150 104 10×18 4,2 16,4 STF200400230
250070202,866,496,3-10/ 6,6 192 154 179 150 120 10×18 5,1 20,3 STF250400230