ST24D12 Teledyne

Series ST Output to 50A, 600Vac DC Control Solid-State Relays Part Number Description ST24D12 12A, 4-30 Vdc ST24D25 25A, 4-30 Vdc ST48D50 50A, 5-30Vdc For RoHS Compliant Contact Factory NOTES 1) Line Voltage (nominal): 24 = 240 Vac 48 = 480 Vac 2) Switch Type: D = Zero-cross turn-on FEATURES/BENEFITS Industry standard package Internal MOV (certain models) Control LED (certain models) AC or DC control available Excellent thermal performance Tight zero-cross window for low EMI High immunity to surges DESCRIPTION The Series ST single-phase relays are designed for high-power applications. The design incorporates an SCR or triac output. The Series ST relays utilize optical isolation to protect the control from load transients. Control LED is availa ble on certain models. All Series ST relays are zero crossing. Internal MOV is also available on ST24D 25A and 50A models. APPLICATIONS Heating control Industrial and process control On/Off controls of AC equipment APPROVALS All models are UL recognized. UL File Number: E128555. Figure 2 - ST relays 2018 TELEDYNE RELAYS (800) 284-7007 www.teledynerelays.com ST Page 1 ST 042018 Q2Series ST Output to 50A, 600Vac DC Control Solid-State Relays ELECTRICAL SPECIFICATIONS (+25C ambient temperature unless otherwise specified) OUTPUT (LOAD) SPECIFICATIONS (continued) INPUT (CONTROL) SPECIFICATIONS Input Type Min Max Units 2 Input Type Min Max Units I t for Match Fusing (<8.3ms) 2 Control Range 12A output current 72 A S 2 ST24 D 4 30 Vdc 25A output current 288 A S 2 ST48 D 5 30 Vdc 50A output current 1500 A S Input Current Range ST24 D 3 30 mA ENVIRONMENTAL SPECIFICATIONS ST48 D 5 46 mA Min Max Units Must Turn-Off Voltage Storage Temperature -40 100 C ST D 1 Vdc Operating Temperature -40 100 C Input Resistance (Typical) Input-Output Isolation 4000 Vrms ST D 1000 Ohms Output-Case Isolation Reverse Voltage Protection 12A output current 2500 Vrms S D 30 V 25A output current 2500 Vrms 50A output current 3300 Vrms OUTPUT (LOAD) SPECIFICATIONS Input Type Min Max Units SURGE CURRENT Operating Range ST24 12 280 Vrms ST48 24 600 Vrms Peak Voltage ST24 600 Vpeak ST48 1200 Vpeak Load Current Range (Resistive) Figure 4a - 12A output current 12A output current .005 12 Arms 25A output current .005 25 Arms 50A output current .005 50 Arms Maximum Surge Current Rating (Non-Repetitive) 12A output current 120 A 25A output current 240 A 50A output current 550 A Figure 4b - 25A output current On-State Voltage Drop 12A output current 1.3 V 25A output current 1.2 V 50A output current 1.45 V Zero-Cross Window (Typical) S D 12 Vac Off-State Leakage Current (60Hz) All relays 3 mA Figure 4c - 50A output current Turn-On Time (60Hz) ST D 8.3 ms NOTES: 1. Electrical specifications at 25C unless otherwise specified. Off-State dv/dt 2. For 800Hz applications, contact factory. 3. For additional/custom options, contact factory. All relays 500 V/S ST Page 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE 2018 TELEDYNE RELAYS ST 042018 Q2