CMD4875 Crydom - Relays

CMD4875 Description

Rated at 480 V and 75 A, the Crydom CMD4875 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 CMD4875, send us a request for quote. Please confirm the specifications against the manufacturer's datasheet before purchase.

Summary of Features

Target Applications

Crydom CMD4875 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 CMD4875 is a 75 A panel-mount solid state relay, CMD/CMA48 Series (48-530 VAC), SCR output, DC control (4-32 VDC), zero-cross turn-on, LED input indicator, IP20 touch-safe housing with box-clamp terminals. Source: Crydom CMD/CMA48 Series datasheet (Rev. 113011). Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage (47-63 Hz)	48-530 Vrms
Maximum load current	75 Arms
Transient overvoltage	1200 Vpk
Minimum load current	0.25 Arms
Maximum 1 cycle surge current (50/60 Hz)	954/1000 Apk
Maximum on-state voltage drop @ rated current	1.6 Vpk
Maximum off-state leakage @ rated voltage	10 mArms
Minimum off-state dv/dt	500 V/µs
Thermal resistance junction to case (Rjc)	0.31 °C/W
Maximum I²t for fusing (1/2 cycle, 50/60 Hz)	4555/4150 A²s
Switching type	zero-cross turn-on
Input
Control voltage range	4-32 VDC
Typical input current	17 mA @ 5 VDC (max 30 mA)
Maximum turn-on / turn-off time	1/2 cycle / 1/2 cycle
General
Dielectric strength, input/output/base	4000 Vrms
Ambient operating temperature	-40 to 80°C
Weight (typical)	3.0 oz (86.5 g)

Technical document (PDF)  |  Request a quote for CMD4875 (reply within 24 hours)