BLOCK STEU160/23 Control, Safety and Isolation Transformer 160 VA 230/23 V

Control cabinet builders and machine manufacturers use the BLOCK STEU160/23 transformer to supply safe, isolated 23 V AC control voltage from a 230 V AC mains supply. The single-phase unit combines control, safety and isolation functions in one compact device, rated at 160 VA and intended for screw mounting.

Key specifications

• Rated power: 160 VA
• Input voltage: 230 V AC
• Output voltage: 23 V AC
• Frequency: 50/60 Hz
• Type: Control, safety and isolation transformer
• Insulation class: B
• Protection class: IP00
• Ambient temperature range: -25 °C to +40 °C
• Mounting: Screw mounting
• Connection: Screw terminals
• Short-circuit voltage: 5%
• No-load losses: 5.5 W
• Efficiency: 90%
• Standards: EN 61558-2-2, EN 61558-2-4, EN 61558-2-6
• Primary winding: 1
• Secondary winding: 1

Why choose it

The transformer provides galvanic isolation between primary and secondary circuits, reducing the risk of electric shock and protecting sensitive control electronics from mains-borne interference. Its robust design and wide operating temperature range make it suitable for industrial environments.

Ideal use cases

• Supplying control circuits in industrial machinery
• Isolating sensitive electronics from mains disturbances
• Safety extra-low voltage (SELV) applications

Good to know

The unit is designed for fixed installation with screw terminals and screw mounting. It has no enclosure (IP00) and must be installed in a suitable cabinet or housing.