The BLOCK ST 250/4/23 is a compact and reliable control and isolating transformer, designed for industrial applications.
The BLOCK ST 250/4/23 is a compact and reliable control and isolating transformer, designed for industrial applications where galvanic isolation and stable voltage conversion are essential. It’s part of BLOCK’s ST series, known for high power density, reduced inrush currents, and robust construction.
Technical Specifications
Feature
Details
Rated Power
250 VA
Primary Voltage
400 V AC
Secondary Voltage
230 V AC
Frequency Range
50–60 Hz
Insulation Class
Class B
Cooling Type
Natural air (AN)
Mounting
Chassis mounting with metal base plate and elongated holes
Protection Class
IP00
Standards Compliance
EN/IEC 61558-2-2 and EN/IEC 61558-2-4
Connection Terminals
Touch-protected per UVV BGV A3
Primary Taps
5% for voltage adjustment
Construction
BLOCK IMPEX vacuum impregnation for noise reduction and durability
