A2425-B Crydom - Relays

A2425-B Description

Crydom makes the A2425-B, a solid state relay. Solid state relays like this switch heaters, motors, lamps and other loads quietly and without contact wear.

We help engineers and repair technicians find parts like the A2425-B, including obsolete ones. Send a quick RFQ for current pricing and delivery. Before ordering, please confirm ratings and pin-out with the official datasheet.

Summary of Features

Target Applications

Crydom A2425-B 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 A2425-B is a 25 A Series 1T 240 VAC panel-mount solid state relay with normally closed (Form B) output, SCR output, 24-280 VAC, AC control 90-280 Vrms, phototransistor trigger. Source: Crydom Series 1T 240 VAC datasheet. Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage (47-63 Hz)	24-280 Vrms
Maximum load current	25 Arms
Transient overvoltage	600 Vpk
Minimum load current	40 mArms
Maximum 1 cycle surge current (50/60 Hz)	239/250 Apk
Maximum on-state voltage drop @ rated current	1.15 Vrms
Maximum off-state leakage @ rated voltage	10 mArms
Minimum off-state dv/dt	500 V/µs
Thermal resistance junction to case (Rjc)	0.8 °C/W
Maximum I²t for fusing (50/60 Hz)	285/259 A²s
Output	Normally closed (Form B)
Input
Control voltage range	90-280 Vrms
Maximum turn-on / must turn-off voltage (-B version)	10 Vrms / 90 Vrms
Input current for on-state (min-max)	2-4.9 mA
Nominal input impedance	60 kOhm
Maximum turn-on / turn-off time	10 ms / 40 ms
General
Ambient operating temperature	-40 to 80°C
Weight (typical)	2.64 oz (74.9 g)

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