Solid State Relays Industrial, 1-Phase ZS, Standard Range Types RA 24.. 06/RA 44.. 08/RA 48.. 12 AC Solid State Relay Zero switching Direct copper bonding technology Rated operational current: 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 De scrip tion Ordering Key RA 24 25 LA 06 The zero switching relay with tive, inductive and capacitive Solid State Relay antiparallel thyristor output is loads. The zero switching re - Switching mode the most widely used in dus- lay switch es ON when the Rated operational voltage t ria l SSR due to its multiple sine curve just cross es zero Rated operational current ap plic at ion possibilities. The and switch es OFF when the Control voltage relay can be used for re sis - curr ent cross es zero. Blocking voltage Type Selection Switching mode Rated operational Rated operational Control voltage Blocking voltage voltage current A: Zero switching 24: 230 VACrms 25: 25 AACrms D: 3 to 32 VDC 06: 650 V p 44: 400 VACrms 50: 50 AACrms LA: 10 to 90 VAC/DC 08: 850 V p 48: 480 VACrms 90: 90 AACrms HA: 90 to 280 VAC/DC 12: 1200 V p Selection Guide Rated opera- Blocking Control voltage Rated op er a tion al current tional voltage voltage 25 AACrms 50 AACrms 90 AACrms 3 to 32 VDC RA 2425 -D 06 RA 2450 -D 06 RA 2490 -D 06 230 VACrms 650 Vp 10 to 90 VAC/DC RA 2425 LA 06 RA 2450 LA 06 RA 2490 LA 06 90 to 280 VAC/DC RA 2425 HA 06 RA 2450 HA 06 RA 2490 HA 06 3 to 32 VDC RA 4425 -D 08 RA 4450 -D 08 RA 4490 -D 08 400 VACrms 850 Vp 10 to 90 VAC/DC RA 4425 LA 08 RA 4450 LA 08 RA 4490 LA 08 90 to 280 VAC/DC RA 4425 HA 08 RA 4450 HA 08 RA 4490 HA 08 3 to 32 VDC RA 4825 -D 12 RA 4850 -D 12 RA 4890 -D 12 480 VACrms 1200 Vp 10 to 90 VAC/DC RA 4825 LA 12 RA 4850 LA 12 RA 4890 LA 12 90 to 280 VAC/DC RA 4825 HA 12 RA 4850 HA 12 RA 4890 HA 12 Specifications are subject to change without notice (09.10.2020) 1RA 24.. 06, RA 44.. 08, RA 48.. 12 General Spec i fic at ions 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 850 V 1200 V p p 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 CE, cURus, CSA, EAC CE, cURus, CSA, EAC CE, cURus, CSA, EAC Output Spec i fi ca tions RA..25 .. RA ..50 .. RA ..90 .. Rated operational current AC 51 25 Arms 50 Arms 90 Arms AC 53a 5 Arms 15 Arms 20 Arms Minimum operational current 150 mArms 250 mArms 400 mArms Rep. overload current t=1 s 55 Arms 125 Arms 150 Arms Non-rep. surge current t=10 ms 325 A 600 A 1150 A p p p Off-state leakage current rated voltage and frequency 3 mArms 3 mArms 3 mArms 2 2 2 2 I t for fusing t=10 ms 525 A s 1800 A s 6600 A s On-state voltage drop rated current 1.6 Vrms 1.6 Vrms 1.6 Vrms Critical dV/dt commutating 500 V/ s 500 V/ s 500 V/ s Critical dV/dt off-state 500 V/ s 500 V/ s 500 V/ s Input Spec if i ca tions 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 2 Specifications are subject to change without notice (09.10.2020)