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| PartNumber | S48D25 | S48D50 | S48D |
| Description | Solid State Relays - Industrial Mount 25A 480VAC Zero Cross | Solid State Relays - Industrial Mount 50A 480VAC Zero Cross | |
| Manufacturer | Teledyne Relays | Teledyne Relays | Teledyne Relays |
| Product Category | Solid State Relays | Solid State Relays | Solid State Relays |
| Series | S | S | S |
| Product | HVAC Relays | HVAC Relays | HVAC Relays |
| Type | Indicator | Controller | Indicator |
| Mounting Style | Panel | Panel | Panel |
| Termination Style | Screw | Screw | Screw |
| Package Case | Hockey Puck | Hockey Puck | Hockey Puck |
| Control Voltage Range | 5 VDC to 30 VDC | 5 VDC to 30 VDC | 5 VDC to 30 VDC |
| Load Voltage Rating | 24 VAC to 520 VAC | 24 VAC to 520 VAC | 24 VAC to 520 VAC |
| Load Current Rating | 25 A | 50 A | 25 A |
| Input Current | 3 mA to 30 mA | 3 mA to 30 mA | 3 mA to 30 mA |
| Output Type | - | SCR | - |
| Contact Form | - | SPST (1 Form A) | - |
| Maximum Operating Temperature | - | + 100 C | - |
| Minimum Operating Temperature | - | - 55 C | - |