Cam switches Characteristics (p. 213) > CHANGE-OVER SWITCH WITHOUT "OFF" POSITION (continued) PR 21 - 25 A (AC21) Enclosure Cat. No. Designation Black small handle 64 aluminium plate 1P - 2 contacts 2P - 4 contacts 3P - 6 contacts 4P - 8 contacts TC53DXQ 1 2 PR21 2251 D4 BCQ3 PR21 2252 D4 BCQ3 PR21 2253 D4 BCQ3 PR21 2254 D4 BCQ3 TC51DXQ TC52DXQ TC53DXQ TC54DXQ Dimensions in mm *P: 77 (1 to 6 contacts) 101 (7 to 8 contacts) 22 120 x 96 Ø28 26 P PR 26 - 32 A (AC21) 2-screw panel mount - interval: 30 mm Grey/black medium handle 72 aluminium plate and frame 1P - 2 contacts 2P - 4 contacts 3P - 6 contacts 4P - 8 contacts ZC52DQ7 30 72 58 x 53 *P = Depth 6 2 Designation PR26 2251 D4 E Q72MN PR26 2252 D4 E Q72MN PR26 2253 D4 E Q72MN PR26 2254 D4 E Q72MN Dimensions in mm Ø28 P 1 *P: 36 (1-2 contacts) 51 (3-4 contacts) 66 (5-6 contacts) 81 (7-8 contacts) 31 Catalogue No. in bold: normally in stock at distribution outlets 160 Cat. No. ZC51DQ7 ZC52DQ7 ZC53DQ7 ZC54DQ7