A53DP50D Crydom - Relays

A53DP50D Description

Crydom makes the A53DP50D, a solid state relay. Typical uses include temperature control of heaters, packaging and plastics machinery, and general industrial load switching.

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Summary of Features

Target Applications

Crydom A53DP50D is used for three-phase switching of industrial heaters and furnaces, plastic processing machines, process heating and motor loads.

Key Specifications

Crydom A53DP50D is a two-phase panel-mount solid state relay (53DP Series, 2 controlled + 1 linked phase), 50 A per phase @ 48-530 VAC, SCR output, AC control 90-280 VAC, zero voltage turn-on, LED input indicator. The datasheet marks this series obsolete. Source: Crydom 53DP Series datasheet. Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage (47-63 Hz)	48-530 Vrms
Maximum load current	50 Arms
Minimum load current	0.05 Arms
Transient overvoltage	1200 Vpk
Maximum surge current (16.6 ms)	625 Apk
Maximum on-state voltage drop @ rated current	1.6 Vpk
Thermal resistance junction to case (Rjc)	0.63 °C/W
Maximum I²t for fusing (8.3 ms)	1620 A²s
Maximum off-state leakage @ rated voltage	10 mArms
Minimum off-state dv/dt	500 V/µs
Switching type	zero voltage turn-on
Input
Control voltage range	90-280 VAC
Minimum turn-on / turn-off voltage	90 / 10 Vrms
Typical input current	2.2 mA @ 120 Vrms, 4.4 mA @ 240 Vrms
Nominal input impedance	54.8 kOhm
Maximum turn-on / turn-off time	10 ms / 40 ms
General
Dielectric strength, input/output/base	4000 Vrms
Ambient operating temperature	-40 to 80°C
Weight (typical)	10.3 oz (315 g)

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