Solid-State Switching Devices for Resistive Loads Solid-State Relays 3RF20 solid-state relays, single-phase, 45 mm 1) I max provides information about the performance of the solid-state relay. The actual permitted rated operational current I e can be smaller depen- ding on the connection method and cooling conditions. Note: The required heat sinks for the corresponding load cur- rents can be determined from the characteristic curves, page 12. The minimum thickness values for the mounting sur- face must be observed. 1) Only for zero-point-switching devices. 16 Siemens · 2009 Order No. Imax1) at Rthha/Tu = 40 °C A K/W Imax1) Ie acc. to IEC 60947-4-3 Ie acc.
to UL/CSA Power loss at Imax Minimum load current Leakage current at Rthha/Tu = 40 °C at Rthha/Tu = 40 °C at Rthha/Tu = 50 °C A K/W A K/W W A mA Main circuit 3RF20 20-1.A.. 20 2.0 20 1.7 20 1.3 28.6 0.1 10 3RF20 30-1.A.. 30 1.1 30 0.79 30 0.56 44.2 0.5 10 3RF20 50-1.A.. 50 0.68 50 0.48 50 0.33 66 0.5 10 3RF20 70-1.A.. 70 0.40 50 0.77 50 0.6 94 0.5 10 3RF20 90-1.A.. 88 0.33 50 0.94 50 0.85 118 0.5 10 Order No. Rated impulse withstand capacity Itsm A Rated impulse withstand capacity Itsm I2t value A²s Main circuit 3RF20 20-1.A.. 200 200 3RF20 30-1.A.2 3RF20 30-1.A.4 3RF20 30-1.A.6 300 450 300 450 400 800 3RF20 50-1.A..
600 1800 3RF20 70-1.A.2 3RF20 70-1.A.4 3RF20 70-1.A.5 3RF20 70-1.A.6 1200 7200 1200 7200 1200 7200 1150 6600 3RF20 90-1.A.. 1150 6600 Type 3RF20 .0-1.A.2 3RF20 .0-1.A.4 3RF20 .0-1.A.5 3RF20 .0-1.A.6 Main circuit Rated operational voltage Ue V • Operating range V • Rated frequency Hz 24 ... 230 48 ... 460 48 ... 600 48 ... 600 20 ... 253 40 ... 506 40 ... 660 40 ... 660 50/60 ± 10 % Rated insulation voltage Ui V 600 Blocking voltage V 800 1200 1600 Rage of voltage rise V/μs 1000 Type 3RF20 .0-1.A0. 3RF20 .0-1.A2. 3RF20 .0-1.A4. Control circuit Method of operation DC operation AC operation DC operation Rated control supply voltage US V 24 acc. to EN 61131-2 110 … 230 4 …
30 Rated frequency Hz of the control supply voltage -- 50/60 ± 10 % -- Control supply voltage, max. V 30 253 30 Typical actuating current mA 20 15 20 Response voltage V 15 90 4 Drop-out voltage V 5 40 1 Operating times • ON-delay ms • OFF-delay ms 1 + max. one half-wave1) 40 + max. one half-wave1) 1 + max. one half-wave1) 1 + max. one half-wave 40 + max. one half-wave 1 + max. one half-wave