Product Description


SIM Series

Safety Isolating Transformer

PRI 230 Vac, SEC 2 x 12 Vac, 60 - 800 VA


  • Screw terminals under cover with strain relief
  • Very good moisture protection and low noise thanks to XtraDenseFill resin encapsulation (up to 300 VA)
  • Dual output voltage for series or parallel connection
  • Integrated short-circuit and overload protection


Safety Transformers

Safety transformers with galvanic isolation provide a reliable supply to power circuits with the safety measures “protective separation” or “protection through shutdown”. Double or reinforced isolation between the primary and secondary sides protects SELV and PELV circuits. Safety transformers provide safety extra low voltages below 50 Vac or 120 Vdc. BLOCK's standard range includes power ratings of between 0.5 VA and 2,500 VA.

  • Protection for SELV and PELV circuits
  • For safety extra low voltages below 50 Vac or 120 Vdc
  • Power output: 0.5 VA to 2,500 VA


Safety isolating transformer for the safe electrical isolation of the input and output sides. The transformer is suitable for creating SELV and PELV circuits because of the limit on the output voltage.



Class A


Up to 95 %

Degree of Protection

IP 20

Rated Output Voltage

2 x 12 Vac

Rated Power

60 - 800 VA

Rated Input Voltage

230 Vac

Maximum Ambient Temperature

40 °C


VDE 0570 Part 2-6, DIN EN 61558-2-6, EN 61558-2-6, IEC 61558-2-6



Specifications vary between configurations. Refer to the Configurations below for more information and links to the manufacturer's website.


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