25SST120 Crydom - Relays

25SST120 Description

Crydom 25SST120 is a solid state relay. It is widely used for heater control, motor switching, lighting and process equipment where mechanical contacts would wear out.

USComponent has sourced power semiconductors for maintenance teams and OEMs since 2001. For price and availability of the 25SST120, send us a request for quote. Please confirm the specifications against the manufacturer's datasheet before purchase.

Summary of Features

Target Applications

Crydom 25SST120 is used for proportional power control of resistive heaters in ovens, furnaces, plastic processing and other process heating applications.

Key Specifications

Crydom 25SST120 is an SST Series soft-start module with 25 A output (for use with Series 1 random-fire SSRs), 120 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)	90-140 Vrms
Maximum load current	25 Arms
Minimum load current	0.04 Arms
Transient overvoltage	400 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

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