25SST240 Crydom - Relays

25SST240 Description

Crydom makes the 25SST240, a solid state relay. It is widely used for heater control, motor switching, lighting and process equipment where mechanical contacts would wear out.

USComponent (Young & New Century LLC) supplies power modules, thyristors, diodes and other industrial components, including legacy parts. Contact us for a quote on the 25SST240, and please confirm ratings against the datasheet before ordering.

Summary of Features

Target Applications

Crydom 25SST240 is used for proportional power control of resistive heaters in ovens, furnaces, plastic processing and other process heating applications.

Key Specifications

Crydom 25SST240 is an SST Series soft-start module with 25 A output (for use with Series 1 random-fire SSRs), 240 VAC line, 3.5-10 VDC control. The datasheet marks this series obsolete. Source: Crydom SST Series datasheet. Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage (47-63 Hz)	180-280 Vrms
Maximum load current	25 Arms
Minimum load current	0.04 Arms
Transient overvoltage	600 Vpk
Maximum surge current (16.6 ms)	250 Apk
Maximum on-state voltage drop @ rated current	1.6 Vpk
Thermal resistance junction to case (Rjc)	1.02 °C/W
Maximum I²t for fusing (8.3 ms)	260 A²s
Maximum off-state leakage @ rated voltage	10 mArms
Minimum off-state dv/dt	500 V/µs
Control module
Control voltage range	3.5-10 VDC

Technical document (PDF)  |  Request a quote for 25SST240 (reply within 24 hours)