BLOCK STEU 500/23 Safety Transformer Control Transformer Isolation Transformer 500 VA 230 V to 23 V

The BLOCK STEU 500/23 is a high-quality safety, control, and isolation transformer designed for industrial applications requiring reliable voltage transformation. With a power rating of 500 VA and input/output voltages of 230 V AC and 23 V AC respectively, this single-phase transformer ensures safe and efficient operation. It complies with VDE 0570 and EN 61558 standards, making it suitable for use in control cabinets, machinery, and other electrical installations.

Advantages

This transformer offers robust construction with varnish impregnation for enhanced durability and protection against environmental influences. Its screw terminals provide secure and easy wiring, while the open-type design allows for efficient heat dissipation. The high efficiency of approximately 92% minimizes energy losses, and the low no-load current of 0.08 A contributes to reduced standby power consumption.

Suitable for

• Control circuits in industrial machinery
• Safety applications requiring galvanic isolation
• Power supply for 23 V AC devices
• Installations where isolation from mains is necessary

Key specifications

• Power Rating: 500 VA
• Input Voltage: 230 V AC
• Output Voltage: 23 V AC
• Frequency: 50/60 Hz
• Number of Phases: 1 (Single-Phase)
• Insulation Class: B
• Protection Class: IP00
• Short-Circuit Voltage: approx. 4.5%
• No-Load Current: approx. 0.08 A
• Efficiency: approx. 92%
• Ambient Temperature Range: -20 °C to +40 °C
• Mounting Type: Screw Mounting
• Terminals: Screw Terminals
• Standards: VDE 0570 / EN 61558-2-2, EN 61558-2-4, EN 61558-2-6
• Construction: Open Type, Varnish Impregnated

Recommendations

For optimal performance, ensure proper ventilation and mounting on a non-flammable surface. Use appropriate fusing on the primary side as per local regulations. This transformer is not suitable for outdoor use without additional protection.