Solid State Relays Industrial, 1-Phase ZS (IO) w. LED Types RAM1A, RAM1B Zero switching (RAM1A) or instant-on switching (RAM1B) AC Solid State Relay Direct copper bonding (DCB) technology LED indication Clip-on IP 20 protection cover Self-lifting terminals Housing free of moulding mass 2 input ranges: 3-32 * and 20-280 VAC/22-48 VDC Operational ratings: Up to 125 AACrms and 690 VACrms Blocking voltage: Up to 1600 V p Opto-isolation: > 4000 VACrms Integrated overvoltage protection by self switching (suffix Z option) Product De scrip tion Ordering Key RAM 1 A 60 D 125 Z The industrial, 1-phase relay es zero. The instant-on relay Solid State Relay with antiparallel thyristor out- with DC control input can be Number of poles put is the most widely used used for phase angle control. Switching mode indus trial SSR due to its The built-in snubber secures Rated operational voltage multiple application possibil- transient protection. The Control voltage ities. The relay can be used LED indicates the status of Rated operational current for resistive, inductive and the control input. The clip-on Options capacitive loads. The zero cover secures touch protec- switching relay switches ON tion (IP 20). Protected output when the sinusoidal curve terminals can handle cables 2 crosses zero and switches up to 16 mm . OFF when the current cross- Type Selection Switching mode Rated operational Control voltage Rated operational Options voltage current A: Zero Switching 23: 230VACrms A: 20-280 VAC/22-48VDC 25: 25AACrms Z: Overvoltage B: Instant-on switching 60: 600VACrms D: 3 - 32VDC* 50: 50AACrms protection (self- (DC Control only) 69: 690VACrms 75: 75AACrms switching) * 4 to 32VDC for RAM1A60..., RAM1A69... 100: 100AACrms * 4 to 32VDC for RAM1B types 125: 125AACrms Selection Guide Rated Blocking Control Rated oper a tion al current operational voltage voltage 25A 50A 75A 100A 125A voltage 230VACrms 650V 3 - 32VDC RAM1A23D25 RAM1A23D50 RAM1A23D75 RAM1A23D100 RAM1A23D125 p 20-280VAC/22-48VDC RAM1A23A25 RAM1A23A50 RAM1A23A75 RAM1A23A100 RAM1A23A125 600VACrms 1200V 4 - 32VDC RAM1A60D25 RAM1A60D50 RAM1A60D75 RAM1A60D100 RAM1A60D125 p 20-280VAC/22-48VDC RAM1A60A25 RAM1A60A50 RAM1A60A75 RAM1A60A100 RAM1A60A125 690VACrms 1600V 4-32VDC - - RAM1A69D75 RAM1A69D100 RAM1A69D125 p 20-280VAC/ 22-48VDC - - RAM1A69A75 RAM1A69A100 RAM1A69A125 Options 1 Overvoltage protection by self-switching: add suffix Z to include. Example: RAM1A60D25Z. Not applicable for 690 V version. Specifications are subject to change without notice (30.05.2017) 1RAM1A, RAM1B General Spec i fi ca tions RAM1.23.. RAM1.60.. RAM1.69.. Operational voltage range RAM1A... 24 to 265 VACrms 42 to 660 VACrms 42 to 760 VACrms RAM1B... 42 to 265 VACrms 42 to 660 VACrms 42 to 760 VACrms Blocking voltage 650 Vp 1200 Vp 1600 Vp Zero voltage turn-on 10 V 10 V 10 V Operational frequency range 45 to 65 Hz 45 to 65 Hz 45 to 65 Hz Power factor > 0.5 230 VACrms > 0.5 600 VACrms > 0.5 690 VACrms Approvals UR, cUR, CSA, VDE*, CCC, EAC UR, cUR, CSA, VDE*, CCC, EAC CCC, EAC CE-marking Yes Yes** Yes** Isolation Input to Output 4000 Vrms 4000 Vrms 4000 Vrms Input and Output to case 4000 Vrms 4000 Vrms 4000 Vrms * VDE0805 ** Heatsink must be conected to ground Input Specifications RAM1...D.. RAM1...A.. Control voltage range RAM1A23... 3-32 VDC 20-280 VAC, 22-48 VDC RAM1A60..., RAM1A69... 4-32 VDC 20-280 VAC, 22-48 VDC RAM1B... 4-32 VDC - Pick-up voltage Ta = 25C RAM1A23... 2.5 VDC 18 VAC/DC RAM1A60..., RAM1A69... 3.5 VDC 18 VAC/DC RAM1B... 3.5 VDC - Reverse voltage 32 VDC - Drop out voltage 1.2 VDC 6 VAC/DC Input current max input voltage RAM1A 12 mA 20 mA RAM1B 15 mA - Response time pick-up RAM1A 1/2 cycle 12 ms RAM1B 0.1 ms - Response time drop-out 1/2 cycle 40 ms Output Specifications RAM1...25 RAM1...50 RAM1...75 RAM1...100 RAM1...125 Rated operational current AC51 Ta=25C 25Arms 50Arms 75Arms 100Arms 125Arms AC53a Ta=25C 5Arms 15Arms 17Arms 20Arms 30Arms Min. operational current 150mA 250mA 400mA 400mA 500mA Rep. overload current t=1 s < 55AACrms < 125AACrms < 130 AACrms < 150 AACrms < 200AACrms Non-rep. surge current t=10 ms 325Ap 600Ap 800Ap 1150Ap 1900Ap Off-state leakage current rated voltage and frequency < 3mArms < 3mArms < 3mArms < 3mArms < 3mArms 2 2 2 2 2 2 I t for fusing t= 10 ms < 525A s < 1800A s < 3200A s < 6600As <18000A s Critical dV/dt off-state min. 1000V/s 1000V/s 1000V/s 1000V/s 1000V/s Endurance testing acc. to UL 508 100,000 cycles 100,000 cycles 100,000 cycles 6,000 cycles 6,000 cycles Note: UL requirement for General Use Endurance Testing is 6,000 cycles 2 Specifications are subject to change without notice (30.05.2017)