Separate cam switches Dimensions (p. 255) > REAR MOUNTING 2 SCREWS - INTERVAL 48 OR 68 Cat. No. Ø 4,3 48 Ø 4,3 68 For PR 12 to PR 160 Price list code PR 12 PR 17 PR 21 PR 26 Y513 Y503 Y504 Y505 S S S S PR 40 PR 63 PR 125 PR 160 Y507 Y508 Y511 Y517 S S S S ON DIN RAIL Cat. No. For PR 12 to PR 26 Price list code Max. number of contacts accepted: 8 PR 12 PR 17 PR 21 PR 26 Y553 Y543 Y544 Y545 254 SX SX SX SX