Transtec toroidal transformer with heat protection, model RK-IFS / 120 ta 40 °, 980-7395-008. Primary: 230V (BN-BU) 50/60 Hz, 0.63 A. Secondary: 24V (RD-Bk), 120 VA. Dimensions: outside diameter 11 cm; height 4 cm. Made in Germany. .
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