20 Series - Modular step relays 16 A Features 20.21 20.22, 24, 26, 28 20.23 1 or 2 Pole 16 A Step relays for direct 35 mm rail mounting 17.4 mm wide Test button with mechanical indicators Choice of 6 switching sequences AC coils and DC coils Identification label Possible to connect illuminated push buttons with the additional part 026.00 Single phase switch 1 NO Double phase switch Double phase switch 35 mm rail (EN 50022) mount (SPST-NO) 1NO+1NC (SPST-NO+SPST-NC) 35 mm rail mount 35 mm rail mount 35 mm rail mount Cadmium free contact material A1 1 A1 1 3 A1 1 3 A2 2 A2 2 4 A2 2 4 58.4 58.4 58.4 43.5 43.5 43.5 17.4 17.4 17.4 26.5 26.5 26.5 Contact specification Contact configuration 1 NO (SPST-NO) 2 NO (DPST-NO) 1NO+1NC (SPST-NO+SPST-NC) Rated current/Maximum peak current A 16/30 16/30 16/30 Rated voltage/Maximum switching voltage V AC 250/400 250/400 250/400 Rated load AC1 VA 4,000 4,000 4,000 Rated load AC15 (230 V AC) VA 750 750 750 Nominal lamp rating: incandescent (230 V) W 2,000 2,000 2,000 compensated fluorescent (230 V) W 750 750 750 uncompensated fluorescent (230 V) W 1,000 1,000 1,000 halogen (230 V) W 2,000 2,000 2,000 Minimum switching load mW (V/mA) 1,000 (10/10) 1,000 (10/10) 1,000 (10/10) Standard contact material AgNi AgNi AgNi Coil specification Nominal voltage (U ) V AC (50/60 Hz) 8 - 12 - 24 - 48 - 110 - 120 - 230 - 240 N V DC 12 - 24 - 48 - 110 12 - 24 - 48 - 110 12 - 24 - 48 - 110 Rated power AC/DC VA (50 Hz)/W 6.5/5 6.5/5 6.5/5 Operating range AC (0.851.1)U (50 Hz)/(0.91.1)U (60 Hz) N N DC (0.91.1)U (0.91.1)U (0.91.1)U N N N Technical data 3 3 3 Mechanical life cycles 300 10 300 10 300 10 3 3 3 20 Electrical life at rated load in AC1 cycles 100 10 100 10 100 10 Minimum/Maximum impulse duration 0.1s/1h (according to EN60669) 0.1s/1h (according to EN60669) 0.1s/1h (according to EN60669) Insulation between coil and contacts (1.2/50 s) kV 444 Ambient temperature range C 40+40 40+40 40+40 Protection category IP 20 IP 20 IP 20 Approvals (according to type) 225 84 45 84 84 45 84 84 45 8420 Series - Modular step relays 16 A Ordering information Example: 20 series relay, 35 mm rail (EN 50022) mount, double phase switch, 2 NO (DPST-NO) 16 A contacts, coil rated at 12 V DC, AgSnO contacts. 2 20..2 2 9.01 2. 4 0 0 0 Series Contact material 0 = AgNi standard Type 4 = AgSnO 2 2 = 35 mm rail (EN 50022) mount Coil voltage No. of poles see coil specifications 1 = Single phase switch 1 NO (SPST-NO) 2 = Double phase switch 2 NO (DPST-NO) Coil version 3 = Double phase switch 1 NC+1 NO (SPST-NO+SPST-NC) 8 = AC (50/60 Hz) 4 = 4 sequence double phase switch 2 NO (DPST-NO) 9 = DC 6 = 3 sequence double phase switch 2 NO (DPST-NO) 8 = 4 sequence double phase switch 2 NO (DPST-NO) Technical data Insulation Dielectric strength between supply and contacts V AC 3,500 between open contacts V AC 2,000 between adjacent contacts V AC 2,000 Other data Power lost to the environment with rated current and coil deenergised W 1.3 (20.21, 20.23, 20.28) 2.6 (20.22, 20.24, 20.26) Screw torque Nm 0.8 0.8 Coil terminals Contact terminals Max. wire size solid cable stranded cable solid cable stranded cable 2 mm 1x4 / 2x2.5 1x2.5 / 2x2.5 1x6 / 2x4 1x4 / 2x2.5 AWG 1x12 / 2x14 1x14 / 2x14 1x10 / 2x12 1x12 / 2x14 If the coil is operated for a prolonged period of time, adaquate ventilation of the relays must be provided - suggested gap of 9 mm between adjacent relays. Coil specifications DC version data Nominal Coil code Operating range Resistance Consumption Number Sequences Type of steps 1 2 3 4 voltage I at U N U U U R N min max 20.21 2 VVV mA 12 9.012 10.8 13.2 27 440 20.22 2 24 9.024 21.6 26.4 105 230 48 9.048 43.2 52.8 440 110 20.23 2 110 9.110 99 121 2,330 47 AC version data 20.24 4 Nominal Coil code Operating range Resistance Consumption voltage I at U N 20.26 3 U U U R (50 Hz) N min max VVV mA 20.28 4 8 8.008 6.8 8.8 4 800 20 12 8.012 10.2 13.2 7.5 550 24 8.024 20.4 26.4 27 275 48 8.048 40.8 52.8 106 150 110 8.110 93.5 121 590 64 120 8.120 102 132 680 54 230 8.230 195.5 253 2,500 28 240 8.240 204 264 2,700 27.5 226