BLOCK Control Transformer STEU 250/24 250 VA 230/400 V to 24 V AC

The BLOCK STEU 250/24 is a high-quality control transformer designed for industrial applications requiring reliable voltage transformation. With a rated power of 250 VA and primary voltages of 230/400 V AC, it provides a stable secondary voltage of 24 V AC. This transformer complies with EN 61558-2-2 and VDE 0570 Part 2-2 standards, ensuring safety and performance.

Advantages

Robust screw mounting design for secure installation. Natural air cooling ensures maintenance-free operation. High efficiency of approx. 94% reduces energy losses. Wide ambient temperature range from -25 °C to +40 °C allows use in various environments.

Suitable for

• Industrial control systems
• Machine tools
• Automation equipment
• Switchgear and distribution boards

Key specifications

• Rated Power: 250 VA
• Primary Voltage: 230 / 400 V AC
• Secondary Voltage: 24 V AC
• Frequency: 50/60 Hz
• Insulation Class: B
• Protection Class: IP00
• Short-circuit Voltage: approx. 4.5 %
• No-load Current: approx. 0.08 A
• Efficiency: approx. 94 %
• Dielectric Strength Primary-Secondary: 4 kV
• Dielectric Strength Primary-Ground: 2.5 kV
• Dielectric Strength Secondary-Ground: 0.5 kV
• Mounting Type: Screw mounting
• Terminal Type: Screw terminals
• Standards: EN 61558-2-2, VDE 0570 Part 2-2
• Construction: Open type
• Cooling: Natural air cooling

Recommendations

For optimal performance, ensure proper ventilation and mounting on a non-flammable surface. Always follow local electrical codes and safety regulations.