Shorting Block for 5A Output CTs$30.00 CT Shorting Block, 6 position for 1 - 3 CTs, 75A, 600VSBA6 (shorting block for 1 to 3 CTs)CT shorting block details page. Quantity: Shorting Block for 5A Output CTs quantity Add to cart Categories: 5 Amp Current Transformer, Accessories, Current Transformers Description Description The SBA6 is a six position shorting block for three CTs. A shorting block is required for CT’s with a 5A output to keep high voltage off the CT output. 5 amp output CTs are compatible with the A-10, A-20, and A-30 meters. CT shorting block details page.