Separate cam switches > DIMENSIONS FRONT AND REAR MOUNTING (E AND S) No. of contacts PR 12 42 Front mounting "E" 40 P 66 rear mounting "S" Front mounting P* Rear mounting P* 1-2 3-4 5-6 7-8 9-10 11-12 13-14 15-16 17-18 19-20 21-22 23-24 36 46 56 66 76 86 122 132 142 152 162 172 42 52 62 72 82 92 128 138 148 158 168 178 1-2 3-4 5-6 7-8 9-10 11-12 13-14 15-16 17-18 19-20 21-22 23-24 33 45 57 69 81 93 105 117 129 141 153 165 39 51 63 75 87 99 111 123 135 147 159 171 1-2 3-4 5-6 7-8 9-10 11-12 13-14 15-16 17-18 19-20 21-22 23-24 36 51 66 81 96 111 126 141 156 171 186 201 42 57 72 87 102 117 132 147 162 177 192 207 P PR 17/21 48 Front mounting "E" P 50 66 rear mounting "S" P PR 26 60 Front mounting "E" P 53 66 rear mounting "S" P * P = Depth 255