Control- and safety isolating transformer
USTE 250/2x12
Characteristics
General data
The control transformers of the USTE series are designed for universal voltage adjustment and safe galvanic isolation of the primary circuit from the secondary circuit. The unique BLOCK IMPEX vacuum impregnation process provides excellent protection against external influences while reducing noise levels. Installation is simple and quick thanks to the innovative push-in terminal technology.
Benefits
› Control and safety isolating transformer according to EN (IEC) 61558-2-2 and EN (IEC) 61558-2-6
› Very good inrush behavior due to reduced inrush currents
› High power density through a compact design concept
› Touch-protected connection terminals according to UVV BGV A3
› With combination base plate for screw and rail mounting
| Product | Control- and safety isolating transformer |
| Order number | USTE 250/2x12 |
| Series | USTE |
| Power | 250 VA |
| Input | 208 V / 230 V / 380 V / 400 V / 415 V / 440 V / 460 V / 480 V / 500 V / 525 V / 550 V / 575 V / 600 V |
| Output | 2 x 12 V • 10.4 Aac |
| Phases | 1 |
| Frequency range | 50 Hz to 60 Hz |
| Short-Circuit Losses | 21.93 W |
| No-Load Losses | 7 W |
| Short-Term Power / instantaneous output | 850 VA |
| EN Insulation class | B (130°C) |
| UL Insulation class | class 130 |
| Duty Cycle | 100 % |
| Wire material | Copper |
| Efficiency | 89.6 % |
General
| Short circuit proof | not short-circuit proof |
| Switching group | IIii0 |
| 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 | IP00 |
| Protection class (prepared) | I |
| Overvoltage category | III |
| Degree of contamination | 1 |
Electrical Connections
| Input terminal | Push-in terminal |
| Output terminal | Push-in terminal |
| Terminal PE | Flat plug connection |
Size and Weight
| Width | 96 mm / 3.78 in |
| Height | 107 mm / 4.21 in |
| Depth | 129 mm / 5.08 in |
| Weight | 3.6 kg / 7.937 lbs |
General
| TS35 rail mounting possible | Ja |
| Low Voltage Directive |
EN 61558-2-2 EN 61558-2-6 |
| Approval cULus - Listed | UL 5085-1/-2; CSA 22.2 |
Conrad Electronic SE
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