Eaton STN0.25 Control Transformer 250VA 400V to 230V 204980

Industrial control circuits often require a stable, isolated low-voltage supply that matches the coil voltage of contactors, relays and timers. The Eaton STN0.25 control transformer provides a 230 V AC output from a 400 V AC input, delivering 250 VA of power for reliable switching and control.

Who is it for

Panel builders, machine builders and maintenance technicians who need a compact, screw-mounted transformer for control voltage generation in industrial enclosures and machinery.

Main features

• Rated power: 250 VA
• Primary voltage: 400 V AC
• Secondary voltage: 230 V AC
• Single-phase, 50/60 Hz operation
• Insulation class B, short-circuit proof
• Open type construction with screw terminals
• Mounting via screws

Specifications

• Transformer type: Control transformer
• Power rating: 250 VA
• Primary voltage: 400 V AC
• Secondary voltage: 230 V AC
• Frequency: 50/60 Hz
• Number of phases: Single-phase
• Insulation class: Class B
• Protection degree: IP00
• Mounting type: Screw mounting
• Connection type: Screw terminals
• Series: STN
• Ambient operating temperature: -25 to +40 °C
• Short-circuit proof: Yes
• Number of outputs: 1
• Construction type: Open type

Tips

Verify that the total inrush and holding VA of all connected control devices does not exceed 250 VA. Ensure adequate ventilation inside the enclosure due to the open construction.