CTA24-400BW Crydom - TRIAC

CTA24-400BW Description

The CTA24-400BW is a solid state relay made by Crydom. 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 CTA24-400BW, send us a request for quote. Please confirm the specifications against the manufacturer's datasheet before purchase.

Summary of Features

Target Applications

Crydom CTA24-400BW is used for AC switching and phase control in heaters, lighting dimmers, motor speed control, appliances and solid state relays.

Key Specifications

Crydom CTA24-400BW is a 25 A, 400 V TRIAC in a TO-220AB isolated package, alternistor / no snubber (3 quadrants) type. Source: Crydom CTA/CTB24 TRIAC datasheet. Values at 25°C unless noted.

Parameter	Value
RMS on-state current (full sine wave)	25 A (Tc = 75°C)
Repetitive peak off-state voltage (VDRM/VRRM)	400 V
Type	Alternistor / no snubber (3 quadrants)
Gate trigger current IGT (max, VD = 12 V)	50 mA
Gate trigger voltage VGT (max)	1.3 V
Holding current IH (max)	75 mA
Critical rate of rise of off-state voltage dv/dt (min, Tj = 125°C)	1000 V/µs
Non-repetitive surge peak on-state current	250 A (50 Hz) / 260 A (60 Hz)
I²t for fusing (10 ms)	340 A²s
On-state voltage VT (max)	1.55 V @ ITM = 35 A
Thermal resistance junction to case	1.7 °C/W
Isolation voltage	2500 Vrms
Operating junction temperature	-40 to 125°C
Package	TO-220AB isolated

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