TE Connectivity 1SNK505010R0000 Terminal Block. ABB entrelec® Terminal Block Series: SNK 1000 VAC 20 A 12 AWG Wire 10.5 mm Wire Strip Length Screw/Clamp Terminal 5.2 mm Spacing 0.6 N-m DIN Rail Mount Feed-Through Polyamide Gray 53 mm H x 5.2 mm W x 47.3 mm D. Additional Description: TEC -1SNK505010R0000 ZS4 FEED THRU TERMINAL BLOCK. Catalog Description: Gray feed through terminal block with 5.2 mm spacing 20 Amp rated UL current and screw clamp connection.