Autonics SRH3-1450 Solid State AC Relay
SRH3-1450 is an Autonics Solid State AC Relay supporting three-phase control with 50A load capacity for industrial automation applications. Manufactured by Autonics, this Autonics Solid State Relay operates using 4–30VDC rated input voltage and switches 48–480VAC load voltage. Part of the SR Series, it provides three-phase control, 50A rated load current, zero cross turn-on function, panel or DIN rail mounting, and high dielectric strength.

| Brand | Autonics |
| Product Type | Solid State Relay |
| Model Number | SRH3-1450 |
Autonics SRH3-1450 Solid State AC Relay – Technical Specifications
| Specification | Value |
|---|---|
| Control phase | 3-phase |
| Heatsink | Heatsink |
| Mounting type | Panel, DIN rail |
| Rated input voltage | 4-30VDC |
| Rated load voltage | 48-480VAC~ |
| Dielectric strength | 4,000VAC~ |
| Rated load current | 50A |
| Function | Zero cross turn-on |
| Environment_Ambient temperature | -30 to 80℃(in case of the rated input voltage 90-240VAC~: -30 to 70℃), Storage: -30 to 100℃( The rated load current capacity is different depending on ambient temperature. Refer to '▣ SSR Derating Curve'.) |
| Environment_Ambient humidity | 45 to 85% RH, storage: 45 to 85% RH |
| Weight | approx. 1508g(approx. 1268g) |
The Autonics SRH3-1450 Solid State AC Relay is designed for high-current AC load switching in industrial automation systems. This SRH3-1450 Autonics Solid State AC Relay supports 4–30VDC input voltage, manages 48–480VAC load voltage, and handles 50A load current under three-phase control. As a member of the SR Series, it is applied in automation panels across Indian industrial environments.
In application, the SRH3-1450 Autonics Solid State AC Relay is used in conveyors, packaging lines, automated assembly systems, and heavy-duty automation equipment. Zero cross turn-on operation helps reduce electrical stress during switching, while panel and DIN rail mounting options support structured installation. These characteristics assist in maintaining stable output performance in continuous industrial processes.
The SRH3-1450 from Autonics offers clearly defined electrical ratings suited for long-term industrial automation use. With controlled three-phase switching, verified insulation strength, and standardized mounting formats, this solid state relay integrates reliably into automation designs. The SR Series structure and Autonics manufacturing consistency support dependable operation for engineers selecting AC solid state relays.




