RM1A40D50 Relay
Key Specifications

• Type: 1-pole / 1-phase solid-state relay (SPST-NO)
• Load Current Rating: 50 A AC
• Operating Load Voltage: 42 to 440 V AC
• Control Input Voltage: 4 to 32 V DC
• Switching Mode: Zero-cross switching (reduces electrical noise)
• Mounting Style: Panel mount with screw terminals
• IP Rating: IP20 (finger safe)
• Operating Temperature: -20°C to +70°C 

If you'd like, let me know:

• What kind of load you are connecting (heater, motor, lighting)
• Whether you need help selecting a compatible heatsink

I can give you more specific installation or safety tips