Control- and safety isolating transformer

STE 400/23/24

Characteristics

Benefits

 Very good switch-on behaviour thanks to reduced starting currents

 High power density due to a compact construction design

 Primary side ±5 % tappings for voltage adjustment

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

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

 Contact protected screw connection terminals complying with UVV BGV A3

 Simple mounting thanks to robust metal footplate with oval slots

Product Control- and safety isolating transformer
Order number STE 400/23/24
Power 400 VA
Input 219 V / 230 V / 241 V
Output 24 V • 16.6 Aac
Frequency range 50 Hz to 60 Hz
Short-Circuit Losses 25.84 W
No-Load Losses 13.4 W
Short-Term Power / instantaneous output 1,440 VA
Short circuit voltage uk 4.72 %
EN insulation class B (130°C)
UL Insulation class class 130
Duty Cycle 100 %
Wire material Copper
Efficiency 91.1 %
General
Short circuit proof not short-circuit proof
Switching group Ii0
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 Push-in terminal
Terminal Sec Push-in terminal
Terminal PE Flat plug connection
Size and Weight
Width 120 mm / 4.72 in
Height 121 mm / 4.76 in
Depth 104 mm / 4.09 in
Weight 5 kg / 11.02 lbs
Low Voltage Directive EN 61558-2-2
EN 61558-2-6
Approval cURus - Recognized UL 5085-1/-2; CSA 22.2

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