Cam switches Characteristics (p. 213) > VOLTMETER SWITCH, WITHOUT NEUTRAL (continued) PR 12 - 16 A (AC21) 2-screw panel mount - interval: 30 mm Cat. No. Designation Grey/black small handle 48 aluminium plate and frame 1 network, 3-phase without neutral 1 voltmeter 4 contacts 0 L1L2 PR12 8351 A4 E Q48PN L3L1 NY31AQ1 L2L3 NY31AQ1 22 48 42 x 40 Ø28 46 6 26 PR 12 - 16 A (AC21) ø 22 single hole front mounting Cat. No. Designation Grey/black small handle 48 aluminium plate and frame 1 network, 3-phase without neutral 1 voltmeter 4 contacts 0 L1L2 L3L1 PR12 8351 A4 E N48MD50 L2L3 NY31AX80 22 48 42 x 40 Ø28 61 6 26 Catalogue No. in bold: normally in stock at distribution outlets 193 NY31AX80