During technical comparisons, SR3-1440 appears alongside Autonics Proximity Sensor, Autonics Digital Counter and Autonics Srh3 1440 so engineers assess signal types, ingress protection, and ambient tolerances accurately.
Autonics SR3-1440 Solid State Relay
The Autonics SR3-1440 Solid State Relay offers 3-phase control, Panel Mounting type, 4-30VDC input voltage, 48-480VAC~ load voltage. Manufactured by Autonics under the Autonics Solid State Relay category, this model belongs to the Autonics SR Series.
| Brand | Autonics |
| Product Type | Solid State Relay |
| Model Number | SR3-1440 |
Autonics SR3-1440 Solid State Relay β Technical Specifications
| Specification | Value |
|---|---|
| Control phase | 3-phase |
| Mounting type | Panel |
| Rated input voltage | 4-30VDC |
| Rated load voltage | 48-480VAC~ |
| Dielectric strength | 4,000VAC~ |
| Rated load current | 40A |
| Function | Zero cross turn-on |
| Environment_Ambient temperature | -30 to 80β(in case of the rated input voltage 90-240VAC~: -30 to 70β), Storage: -30 to 100β( The rated load current capacity is different depending on ambient temperature. Refer to 'β£ SSR Derating Curve'.) |
| Environment_Ambient humidity | 45 to 85% RH, storage: 45 to 85% RH |
| Weight | approx. 365g(approx. 275g) |
The Autonics SR3-1440 Solid State Relay is engineered as a 3-Phase SSR Detachable Heatsink Type to deliver safe and efficient power control. It supports a rated input voltage of 4β30VDC and a load voltage range of 48β480VAC, making it suitable for heavy-duty automation systems. With a 40A load current, it handles high-capacity switching while the zero-cross turn-on function reduces electrical noise and extends equipment life. A dielectric strength of 4,000VAC ensures insulation safety, while the compact 365g build with detachable heatsink provides excellent thermal management. Designed for panel mounting, the SR3-1440 operates reliably in environments from β30β to +80β with humidity tolerance of 45β85% RH, proving its durability in demanding factory conditions.
In industrial applications, the SR3 1440 Autonics is widely used in heater banks, motor control systems, and power distribution panels. Engineers value its long-term stability and contactless switching that reduces wear, while maintenance teams appreciate easy installation and consistent reliability. Procurement managers often secure the Autonics SR3-1440 through wholesalers, dealers, and distributors to ensure project timelines and continuous supply. This makes it a trusted choice across industries such as packaging, processing, and heavy machinery where uninterrupted power control is critical.
The Autonics SR3-1440 is part of the established Autonics SR3 Series, recognized for its balance of compact design, insulation safety, and efficient heat dissipation. Engineers frequently search using terms like SR3-1440, Autonics SR3 1440, SR3 1440 Autonics, and Autonics SR3 Series to compare performance across solid state relay options. With its proven reliability and optimized switching, this 3-Phase SSR demonstrates why Autonics remains a preferred brand for automation projects requiring precise, safe, and stable power management. For further details, refer to the official Autonics Solid State Relay product page.
