CSD2425 Crydom - Relays
CSD2425 Description
Crydom CSD2425 is a solid state relay rated at 240 V and 25 A. Typical uses include temperature control of heaters, packaging and plastics machinery, and general industrial load switching.
USComponent (Young & New Century LLC) supplies power modules, thyristors, diodes and other industrial components, including legacy parts. Contact us for a quote on the CSD2425, and please confirm ratings against the datasheet before ordering.
Summary of Features
Crydom CSD2425 is a 25 A panel-mount solid state relay (CSD Series, 24-280 VAC, snubberless / low leakage), SCR output, DC control 3.5-15 VDC, zero voltage turn-on. The datasheet marks this series obsolete (replaced by CSW).
Target Applications
Crydom CSD2425 is used for switching AC loads in industrial heating and temperature control (ovens, furnaces, plastic molding and extrusion machines), packaging and food processing equipment, lighting control, HVAC systems and industrial automation.
Key Specifications
Crydom CSD2425 is a 25 A panel-mount solid state relay (CSD Series, 24-280 VAC, snubberless / low leakage), SCR output, DC control 3.5-15 VDC, zero voltage turn-on. The datasheet marks this series obsolete (replaced by CSW). Source: Crydom CSD Series datasheet. Values at 25°C unless noted.
| Parameter | Value |
|---|---|
| Output | |
| Operating voltage (47-440 Hz) | 24-280 Vrms |
| Maximum load current | 25 Arms |
| Transient overvoltage | 600 Vpk |
| Minimum load current | 0.15 Arms |
| Maximum 1 cycle surge current (50/60 Hz) | 239/250 Apk |
| Maximum on-state voltage drop @ rated current | 1.6 Vpk |
| Maximum off-state leakage @ rated voltage | 1.0 mArms |
| Minimum off-state dv/dt | 500 V/µs |
| Thermal resistance junction to case (Rjc) | 1.02 °C/W |
| Maximum I²t for fusing (1/2 cycle, 50/60 Hz) | 285/259 A²s |
| Switching type | zero voltage turn-on |
| Input | |
| Control voltage range | 3.5-15 VDC |
| Minimum turn-on / turn-off voltage | 3.5 / 1.0 VDC |
| Typical input current | 15 mA @ 5 V |
| Nominal input impedance | 300 Ohm |
| Maximum turn-on / turn-off time | 1/2 cycle / 1/2 cycle |
| General | |
| Dielectric strength, input/output/base | 4000 Vrms |
| Ambient operating temperature | -40 to 80°C |
| Weight (typical) | 3.0 oz (86.5 g) |
Technical document (PDF) | Request a quote for CSD2425 (reply within 24 hours)

