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HD4840 Crydom - Relays
HD4840 Description
HD4840 is a 480 V, 40 A solid state relay made by Crydom. Solid state relays like this switch heaters, motors, lamps and other loads quietly and without contact wear.
Looking for a replacement HD4840? USComponent can quote new and hard-to-find stock and ships worldwide. Request a quote for pricing and lead time, and double-check the datasheet to make sure it fits your application.
Summary of Features
Crydom HD4840 is a 40 A Series 1 panel-mount solid state relay (older generation, HD = 1200 Vpk blocking), SCR output, 80-530 VAC, DC control 3-32 VDC.
Target Applications
Crydom HD4840 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
| Manufacturer | Crydom |
| Category | Relays |
| Rated voltage | 480 V |
| Rated current | 40 A |
Technical document (PDF) | Request a quote for HD4840 (reply within 24 hours)
Related Part Numbers
| HD4850 480(V) / 50(A) | HD4825 480(V) / 25(A) | HD4812 480(V) / 12(A) | HD4875 480(V) / 75(A) |
| HD4890 480(V) / 90(A) | HD6025 600(V) / 25(A) | HD6050 600(V) / 50(A) | HD6090 600(V) / 90(A) |
| HD4825-5019 480(V) / 25(A) | HD4850-5613 480(V) / 50(A) | HD4825-10 480(V) / 25(A) | HD4850G 480(V) / 50(A) |
| HD4850MS1 480(V) / 50(A) | HD48125G 480(V) / 125(A) | HD48125-10 480(V) / 125(A) | HD4875-75A480V 480(V) / 75(A) |
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