TE Connectivity 1SNK505210R0000 Terminal Block. ABB entrelec® Terminal Block Double Deck Series: SNK 800 VAC 20 A 12 AWG Wire 10 mm Wire Strip Length Screw/Clamp Terminal 5.2 mm Spacing 0.6 N-m DIN Rail Mount Feed-Through Polyamide Gray 70.4 mm H x 5.2 mm W x 65.5 mm D. Additional Description: TEC -1SNK505210R0000 ZS4-D2 DOUBLE DECK TB 2 CONNECTIONS. Catalog Description: Gray double deck feed through terminal block with 5.2 mm spacing 20 Amp rated UL current with screw clamp connection and 2 feed through circuits.