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| Country of Origin | China |
|---|---|
| Brand | Phoenix Contact |
| Height | 111mm |
| Length | 43mm |
| Model | 2903278 |
| Width | 90mm |
| Mount Type | DIN Rail |
| Series | RIF |
| Contact Configuration | 3PDT |
| Switching Current | 10mA |
| Terminal type | Plug-In |
| Standards/Approvals | CSA |
| Coil Voltage | 24V dc |
Phoenix Contact 2903278 DIN Rail Interface Relay is a robust, non-latching relay module optimized for industrial control systems. It features a 24V DC coil voltage and a switching current capacity of 10mA, designed to manage multiple output circuits simultaneously through its 3PDT (three poles, double throw) configuration.
This interface relay offers reliable operation with contacts manufactured from silver alloy, ensuring durability and minimal material transfer during switching operations. The relay is pre-assembled with plug-in terminals, simplifying installation and maintenance on standard DIN rails. Equipped with polarity protection and a damping diode, the relay effectively minimizes voltage spikes, enhancing its operational stability.
Featuring a yellow LED coil voltage indicator, users can easily monitor relay status. The device is engineered for a wide operating temperature range from -40°C to +60°C, making it suitable for diverse industrial, manufacturing, and automation applications.
With a mechanical service life rated at 10 million cycles, the relay ensures long-term reliability in demanding environments. Its non-latching design means the contacts return to their normally open or closed positions when the power is cut, providing fail-safe control behavior.
Applications include electrical automation, signal conditioning, control of multiple devices, safety redundancies, and standby modes in production lines, HVAC systems, and industrial machinery.
The relay includes a three-pole, double-throw 3PDT contact configuration. Silver alloy contacts guarantee durability and resist material degradation. Plug-in terminal connectors allow easy installation on DIN rails. Protection diodes guard against polarity errors and voltage spikes.
Yellow LED indicator shows coil operating voltage status. Operation guaranteed between -40°C and +60°C ambient temperature. Mechanical lifecycle rated at 10 million switching cycles. Coil resistance of 430 Ω with power consumption of 1.5 W.
Non-latching relay type for fail-safe automatic reset. Set includes one Phoenix Contact RIF-4-RPT-LDP-24DC/3X21 interface relay module (model 2903278). Manufactured in China with CSA approval. Explore the full range of Interface Relays and DIN Rail mounting solutions for electrical and industrial automation needs, available at EnvMart.
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