Cam switches Characteristics (p. 213) > CHANGE-OVER SWITCH WITHOUT "OFF" POSITION (continued) PR 17 - 20 A (AC21) Cat. No. Enclosure Designation Black small handle 64 aluminium plate 1P - 2 contacts 2P - 4 contacts 3P - 6 contacts 4P - 8 contacts SC51DXQ 1 2 PR17 2251 D4 BCQ3 PR17 2252 D4 BCQ3 PR17 2253 D4 BCQ3 PR17 2254 D4 BCQ3 SC51DXQ SC52DXQ SC53DXQ SC54DXQ Dimensions in mm *P: 77 (1 to 6 contacts) 101 (7 to 8 contacts) 22 120 x 96 Ø28 P 26 PR 21 - 25 A (AC21) 2-screw panel mount - interval: 30 mm Grey/black small handle 48 aluminium plate and frame 1P - 2 contacts 2P - 4 contacts 3P - 6 contacts 4P - 8 contacts TC51DQ1 22 48 x 50 Ø28 P *P = Depth 1 2 Designation PR21 2251 D4 E Q48PN PR21 2252 D4 E Q48PN PR21 2253 D4 E Q48PN PR21 2254 D4 E Q48PN Dimensions in mm *P: 33 (1-2 contacts) 45 (3-4 contacts) 57 (5-6 contacts) 69 (7-8 contacts) 32 Catalogue No. in bold: normally in stock at distribution outlets 159 Cat. No. TC51DQ1 TC52DQ1 TC53DQ1 TC54DQ1