Block ST 400V to 230V Transformers

Block Brand: Block

Block ST 400V to 230V Transformers are low inrush current control, safety, or isolation current transformers with screw connection terminals. Designed with a very good switch-on behaviour thanks to reduced starting currents, plus high performance for the volume thanks to compact design, these high quality transformers offer excellent corrosion protection and low noise due to BLOCKIMPEX vacuum impregnation.

  • Contact protected screw connection terminals - comply with UVV BGV A3
  • Simple mounting - robust metal footplate with oval slots
  • Natural cooling
    • Description Image Product Buy Pricing (Ex VAT) Power Rating Height Length Width Weight Type Primary Voltages Secondary Voltages
    Block ST 160/4/23, 160VA Transformer, 400V to 230V
    Block ST 160/4/23, 160VA Transformer, 400V to 230V
    Extended range
    Order code: 51-5266
    MPN: ST 160/4/23

    Back order - 3 availableBack-order availability date - 22/11/2026
    1+ £71.19
    10+ £67.90
    100+ £67.57
    Price per unit Ex VAT     		160VA 105mm 96mm 88mm 2.9kg Isolation Transformer 400V 230V
    Block ST 500/4/23, 500VA Transformer, 400V to 230V
    Block ST 500/4/23, 500VA Transformer, 400V to 230V
    Extended range
    Order code: 51-5289
    MPN: ST 500/4/23

    Despatched same day - 2 in stockBack-order availability date - 22/11/2026
    1+ £141.92
    Price per unit Ex VAT     		500VA 123mm 120mm 122mm 7.2kg Isolation Transformer 400V 230V

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