SRP1 Series Solid-State Relays

The Littelfuse SRP1-CC, SRP1-CE, and SRP1-ME series are industrial-grade solid-state relays (SSRs) designed to deliver reliable, efficient switching in demanding environments. The SRP1-CC series is optimized for DC output applications, utilizing MOSFET technology to ensure low power dissipation and high overcurrent capability. These relays are ideal for use in systems such as DC heaters, solenoid valves, fans, and battery management, offering fast switching times (as low as 40 µs) and robust protection features like overvoltage protection and compliance with international safety standards (cURus, CE, VDE, UKCA). Their compact design includes finger-safe covers and a wide input voltage range (4 V_DC to 32 V_DC), making them suitable for a variety of industrial and medical applications.

The SRP1-CE and SRP1-ME series extend the capabilities of the SRP1 family into AC switching applications. These relays are built with Littelfuse proprietary IXYS power semiconductors and integrated TVS protection, ensuring high endurance and long operational life even under stress conditions. The SRP1-CE series is tailored for cost-effective heating control, while the SRP1-ME series is designed for compact installations where space is limited. Both series feature zero-cross switching for reduced electrical noise, IP20 finger-safe protection, and pre-attached thermal pads for easy installation. These characteristics make them well-suited for use in HVAC systems, food service equipment, packaging machinery, and other industrial automation scenarios where reliability and safety are paramount.