Safety isolating transformer

STSU 40/24

Characteristics

Benefits

 Control and isolating transformer according to EN (IEC) 61558-2-2 and EN (IEC) 61558-2-4

 Dual input voltage 230 and 400 Vac

 Very good switch-on behavior thanks to reduced inrush currents

 Primary side ±15 V taps for voltage adjustment

 Touch-protected terminal blocks according to UVV BGV A3

 With combination base plate for screw and DIN rail mounting

Product Safety isolating transformer
Order number STSU 40/24
Power 40 VA
Input 230 V / 400 V ± 15 V
Output 2 x 12 V • 1.67 Aac
Phases 1
Frequency range 50 Hz to 60 Hz
Short-Circuit Losses 6.3 W
No-Load Losses 2.7 W
Short circuit voltage uk 12.3 %
EN insulation class B (130°C)
UL Insulation class class 130
Duty Cycle 100 %
Wire material Copper
Efficiency 81.6 %
General
Short circuit proof not short-circuit proof
Switching group Iii0
Shield winding Yes
Cooling type AN
Environment
Ambient temperature -20 °C to 40 °C / -4 °F to 104 °F
Max. installation height 2,000 m / 6,562 ft
Protection and Safety
Protection type IP 00
Protection class (prepared) I
Overvoltage category III
Degree of contamination 1
Electrical Connections
Input terminal Screw terminal
Output terminal Screw terminal
Terminal PE Screw terminal
Size and Weight
Width 66 mm / 2.6 in
Height 78 mm / 3.07 in
Depth 82 mm / 3.23 in
Weight 1 kg / 2.2 lbs
General
TS35 rail mounting possible Ja
Low Voltage Directive EN 61558-2-6
Approval cURus - Recognized UL 5085-1/-2; CSA 22.2

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