Control- and isolating transformer

STSU 400/23

Characteristics

Benefits

 Dual input voltage 230 and 400 Vac

 Quick to cable up thanks to the use of spring-loaded terminals

 Very good switch-on behaviour thanks to reduced starting currents

 Very good corrosion protection and low noise thanks to BLOCKIMPEX vacuum impregnation

 Up to 250 VA with combination footplate for bolted and rail mounting

 Very good corrosion protection and low noise thanks to BLOCK IMPEX vacuum impregnation

 Contact protected screw connection terminals complying with UVV BGV A3

 Simple mounting due to robust metal footplate with oval slots

 63 - 250 VA with combination footplate for bolted and rail mounting

Product Control- and isolating transformer
Order number STSU 400/23
Power 400 VA
Input 230 V / 400 V ± 15 V
Output 2 x 115 V • 1.74 Aac
Frequency range 50 Hz to 60 Hz
Short-Circuit Losses 25 W
No-Load Losses 13 W
Short-Term Power / instantaneous output 1,440 VA
Short-Circuit Voltage uk / 5.70 %
EN insulation class B (130°C)
UL Insulation class class 130
Duty Cycle 100 %
Wire material Copper
Efficiency 91.3 %
General
Short circuit proof not short-circuit proof
Switching group Iii0
Shield winding Yes
Cooling type AN
Enviroment
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
Terminal Pri Screw terminal
Terminal Sec Screw terminal
Terminal PE Screw terminal
Size and Weight
Width 120 mm / 4.72 in
Height 123 mm / 4.84 in
Depth 110 mm / 4.33 in
Weight 5.3 kg / 11.68 lbs
Low Voltage Directive EN 61558-2-2
EN 61558-2-4
Approval cURus - Recognized UL 5085-1/-2; CSA 22.2

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