2-60 specifications are subject to change without notice (28.02.2007) ? ac solid state relay ? zero switching ? direct copper bonding technology ? rated operational current: 10, 25, 50 and 90 aacrms ? blocking voltage: up to 1200 v p ? rated operational voltage: up to 480 vacrms ? 3 input ranges: 3 to 32 vdc, 10 to 90 vac/dc and 90 to 280 vac/dc ? isolation: opto (input-output) 4000 vacrms product description the zero switching relay with antiparallel thyristor output is the most widely used indus- trial ssr due to its multiple application possibilities. the relay can be used for resis- solid state relay switching mode rated operational voltage rated operational current control voltage blocking voltage ordering key solid state relays tive, inductive and capacitive loads. the zero switching re- lay switches on when the sine curve just crosses zero and switches off when the current crosses zero. type selection switching mode rated operational rated operational control voltage blocking voltage voltage current a: zero switching 24: 230 vacrms 10: 10 aacrms -d: 3 to 32 vdc 06: 650 v p 44: 400 vacrms 25: 25 aacrms la: 10 to 90 vac/dc 08: 850 v p 48: 480 vacrms 50: 50 aacrms ha: 90 to 280 vac/dc 12: 1200 v p 90: 90 aacrms selection guide rated opera- blocking control voltage rated operational current tional voltage voltage 10 aacrms 25 aacrms 50 aacrms 90 aacrms 3 to 32 vdc ra 2410 -d 06 ra 2425 -d 06 ra 2450 -d 06 ra 2490 -d 06 230 vacrms 650 v p 10 to 90 vac/dc ra 2410 la 06 ra 2425 la 06 ra 2450 la 06 ra 2490 la 06 90 to 280 vac/dc ra 2410 ha 06 ra 2425 ha 06 ra 2450 ha 06 ra 2490 ha 06 3 to 32 vdc ra 4410 -d 08 ra 4425 -d 08 ra 4450 -d 08 ra 4490 -d 08 400 vacrms 850 v p 10 to 90 vac/dc ra 4410 la 08 ra 4425 la 08 ra 4450 la 08 ra 4490 la 08 90 to 280 vac/dc ra 4410 ha 08 ra 4425 ha 08 ra 4450 ha 08 ra 4490 ha 08 3 to 32 vdc ra 4810 -d 12 ra 4825 -d 12 ra 4850 -d 12 ra 4890 -d 12 480 vacrms 1200 v p 10 to 90 vac/dc ra 4810 la 12 ra 4825 la 12 ra 4850 la 12 ra 4890 la 12 90 to 280 vac/dc ra 4810 ha 12 ra 4825 ha 12 ra 4850 ha 12 ra 4890 ha 12 industrial, 1-phase zs, standard range types ra 24.. .. 06/ra 44.. .. 08/ra 48.. .. 12 ra 24 10 la 06
specifications are subject to change without notice (28.02.2007) 2-61 ra 24.. .. 06, ra 44.. .. 08, ra 48.. .. 12 ra 24.. .. 06 ra 44.. .. 08 ra 48.. .. 12 operational voltage range 24 to 280 vacrms 42 to 480 vacrms 42 to 530 vacrms blocking voltage 650 v p 850 v p 1200 v p zero voltage turn-on 20 v 40 v 40 v operational frequency range 45 to 65 hz 45 to 65 hz 45 to 65 hz power factor 0.5 @ 230 vacrms 0.5 @ 400 vacrms 0.5 @ 480 vacrms approvals ul, csa ul, csa ul, csa general specifications ra .... -d .. ra .... la .. ra .... ha .. control voltage range 3 to 32 vdc 10 to 90 vac/dc 90 to 280 vac/dc pick-up voltage 3 vdc 10 vac/dc 90 vac/dc drop-out voltage 1 vdc 1 vac/dc 10 vac/dc reverse voltage 32 vdc input impedance 1.5 k ? 5.4 k ? 44 k ? response time pick-up 1/2 cycle 1 cycle 1 cycle control pulse width 0.5 ms 0.5 ms 0.5 ms response time drop-out 1/2 cycle 1/2 cycle 1/2 cycle input specifications output specifications ra ..10 .. .. ra ..25 .. .. ra ..50 .. .. ra ..90 .. .. rated operational current ac 51 16 arms 25 arms 50 arms 90 arms ac 53a 3 arms 5 arms 15 arms 20 arms minimum operational current 150 marms 150 marms 250 marms 400 marms rep. overload current t=1 s 35 arms 55 arms 125 arms 150 arms non-rep. surge current t=10 ms 160 a p 325 a p 600 a p 1150 a p off-state leakage current @ rated voltage and frequency 2.5 marms 3 marms 3 marms 3 marms i 2 t for fusing t=10 ms 130 a 2 s 525 a 2 s 1800 a 2 s 6600 a 2 s on-state voltage drop @ rated current 1.6 vrms 1.6 vrms 1.6 vrms 1.6 vrms critical dv/dt commutating 500 v/? 500 v/? 500 v/? 500 v/? critical dv/dt off-state 500 v/? 500 v/? 500 v/? 500 v/? ra ..10 .. .. ra ..25 .. .. ra ..50 .. .. ra ..90 .. .. operating temperature -20 to +70 c-20 to +70 c-20 to +70 c-20 to +70 c (-4 to +158?) (-4 to +158?) (-4 to +158?) (-4 to +158?) storage temperature -40 to +100 c-40 to +100 c-40 to +100 c-40 to +100 c (-40 to +212?) (-40 to +212?) (-40 to +212?) (-40 to +212?) junction temperature 125 c ( 257?) 125 c ( 257?) 125 c ( 257?) 125 c ( 257?) r th junction to case 2.0 k/w 1.25 k/w 0.65 k/w 0.3 k/w r th junction to ambient 12.5 k/w 12 k/w 12 k/w 12 k/w thermal specifications
2-62 specifications are subject to change without notice (28.02.2007) ra 24.. .. 06, ra 44.. .. 08, ra 48.. .. 12 rated isolation voltage input to output 4000 vacrms rated isolation voltage output to case 4000 vacrms insulation resistance input to output 10 10 ? insulation resistance ouput to case 10 10 ? insulation capacitance input to output 8 pf insulation capacitance output to case 100 pf isolation wiring diagram functional diagram control input mains input/load output control input line/load all dimensions in mm dimensions load output/mains input weight approx. 110 g housing material noryl gfn 1, black base plate 10, 25, 50 a aluminium, nickel-plated 90 a copper, nickel-plated potting compound polyurethane relay mounting screws m5 mounting torque 1.5 nm control terminal mounting screws m3 x 6 mounting torque 0.5 nm power terminal mounting screws m5 x 6 mounting torque 2.4 nm housing specifications ** = 0.4 mm *** = 0.5 mm ** ** *** *** *** *** accessories protection cover heatsinks din rail adapter varistors fuses for further information refer to "general accessories".
specifications are subject to change without notice (28.02.2007) 2-63 ra 24.. .. 06, ra 44.. .. 08, ra 48.. .. 12 heatsink dimensions (load current versus ambient temperature) 16 15 14 13 12 11 10 9 7 5 3 1 load current [a] thermal resistance [k/w] t a ambient temp. [ c] power dissipation [w] power dissipation [w] 2 1.7 1.4 1 0.71 0.40 32 2.5 2.1 1.8 1.4 1 0.66 27 3.1 2.7 2.3 1.9 1.4 1 23 4. 3.5 3 2.5 2 1.4 20 4.9 4.3 3.7 3.1 2.5 1.9 16 6.2 5.4 4.6 3.9 3.1 2.3 13 8.1 7.1 6.1 5.1 4 3 10 11.3 9.9 8.5 7.1 5.6 4.2 7 - 15.6 13.3 11.1 8.9 6.7 5 - - - - 18.7 14 2 20 30 40 50 60 70 25 22.5 20 17.5 15 12.5 10 7.5 5 2.5 t a ambient temp. [ c] load current [a] ra ..50 .. .. t a ambient temp. [ c] 50 45 40 35 30 25 20 15 10 5 power dissipation [w] thermal resistance [k/w] load current [a] thermal resistance [k/w] 2.7 2.2 1.8 1.3 0.87 0.41 22 3.1 2.6 2.1 1.7 1.2 0.65 20 3.7 3,1 2.6 2 1.5 0.92 18 4.3 3.7 3.1 2.5 1.9 1.2 16 5 4.3 3.7 3 2.3 1.6 15 5.9 5.1 4.4 3.6 2.8 2.1 13 6.9 6 5.2 4.3 3.5 2.6 12 7.9 6.9 5.9 4.9 4 3 10 10.8 9.5 8.1 6.8 5.4 4.1 7 - 14.2 12.2 10.2 8.1 6.1 5 - - - - 14.6 10.9 3 ------1 20 30 40 50 60 70 0.92 0.76 0.60 0.45 0.29 - 63 1.2 0.99 0.80 0.62 0.44 0.26 55 1.5 1.3 1.1 0.85 0.63 0.42 47 1.9 1.6 1.4 1.1 0.89 0.63 40 2.4 2.1 1.8 1.5 1.2 0.91 33 3 2.7 2.3 1.9 1.5 1.1 26 3.9 3.5 3 2.5 2 1.5 20 5.5 4.8 4.1 3.4 2.7 2.1 15 8.6 7.5 6.4 5.4 4.3 3.2 9 17.9 15.6 13.4 11.2 8,9 6.7 4 20 30 40 50 60 70 thermal resistance [k/w] load current [a] power dissipation [w] ra ..90 .. .. t a ambient temp. [ c] 0.63 0.53 0.42 0.32 - - 97 0.81 0.69 0.57 0.45 0.33 - 84 1 0.89 0.75 0.61 0.47 0.33 71 1.3 1.2 1 0.83 0.66 0.49 59 1.7 1.5 1.3 1.1 0.85 0.64 47 2.2 1.9 1.7 1.4 1.1 0.83 36 3.1 2.7 2.3 1.9 1.5 1.2 26 4.8 4.2 3.6 3 2.4 1.8 17 10 8.8 7.5 6.3 5 3.8 8 20 30 40 50 60 70 90 80 70 60 50 40 30 20 10 carlo gavazzi heatsink (see accessories) no heatsink required rhs 100 assy rhs 301 assy rhs 301 f assy consult your distributor heatsink selection thermal resistance r th s-a > 12.5 k/w 3.0 k/w 0.8 k/w 0.25 k/w < 0.25 k/w compare the value found in the current versus temperature chart with the standard heatsink values and select the heat- sink with the next lower value. ra ..10 .. .. ra ..25 .. ..
2-64 specifications are subject to change without notice (28.02.2007) applications thermal characteristics the thermal design of solid state relays is very impor- tant. it is essential that the user makes sure that cooling is ad- equate and that the maximum junction temperature of the re- lay is not exceeded. this relay is designed for use in applications in which it is exposed to high surge condi- tions. care must be taken to ensure proper heatsinking when the relay is to be used at high sustained currents. ade- quate electrical connection between relay terminals and cable must be ensured. ra 24.. .. 06, ra 44.. .. 08, ra 48.. .. 12 heat flow heatsink temperature r th j-c r th c-s r th s-a junction temperature case temperature ambient temperature thermal resistance: r th j-c = junction to case direct bonding in the design of the output power semiconductor direct bonding of the copper layer and the ceramic substrate has been applied. this is to en- sure uninhibited heat transfer and high thermal fatigue strength. the relay has been designed for applications requiring lar- ge numbers of load cycles. power dissipation the power dissipation for in- termittent use is calculated ac- cording to the following for- mula: t on t off off on i rms = i on 2 x t on t on + t off ex: ra 24 50 -d 06: load current = 45 a t on = 30 s t off = 15 s i rms = 45 2 x 30 30 + 15 the rms current will be 36.7 a. if the heatsink is placed in a small closed room, control panel or the like, the power dissipation can cause the ambient temperature to rise. the heatsink is to be cal- culated on the basis of the ambient temperature and the increase in temperature. r th c-s = case to heatsink r th s-a = heatsink to ambient
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