New solid-state relays offer high reliability in industrial applications
The new SRP1 family of solid-state relays from Littelfuse provides a long-lived alternative to traditional electro-mechanical relays, thanks to the absence of moving parts. Suitable for high-current circuits up to 50 A.
Littelfuse has announced the release of the SRP1 family of solid-state relays (SSRs), which provide a reliable and durable isolated switching function in industrial and commercial machinery applications.
The SRP1 SSRs are available in five configurations:
- SRP1-CR: All-in-one SSRs with touch-safe and over-voltage protection
- SRP1-CB: Basic SSRs for design flexibility
- SRP1-CB…F: Quick-connect terminals for fast installation
- SRP1-CE: Basic SSRs for simple heating applications
- SRP1-CC: Ideal for dc voltage load applications
At the heart of the SRP1 SSRs is a proprietary, enhanced power component designed by Littelfuse. This tailor-made component provides optimal performance even under harsh conditions, ensuring higher reliability and a longer lifespan. Highly resistant to heat degradation, the Littelfuse power component substantially reduces the risk of failure, minimizing downtime and improving productivity in machinery and applications. The SRP1 relays are rated for up to 750,000 life stress cycles, three times more than competing devices.
Across the SRP1 family, current ratings range from 10 A to 50 A at low or high voltage. Relays are available with either ac or dc control. Compliance with international standards ensures that the SSRs have undergone rigorous testing, assuring OEMs of the safety and quality.
Video link
Introduction to the SRP1 relay family