Phoenix Contact 2800037

The S-PT-4-EX-24DC-1/2" surge protection device is engineered for two-stage protection of three or four signals within floating signal circuits. This module is constructed with an IP67 degree of protection, making it suitable for sensor heads. It is compatible with a ½-inch 14 NPT connection.

Designed for use in Ex areas, it has been rigorously tested for compliance with several protection types including Ex d, Ex tD, Ex ia IIC, and Ex iaD. The device adheres to the FISCO concept, ensuring compatibility with fieldbus systems and is HART-compatible, which allows for seamless integration into existing setups.

Notable specifications include a nominal voltage of 24 V DC, with a maximum input voltage of 36 V DC and a maximum input current of 500 mA at T4 conditions. It operates effectively within temperatures ranging from -40 °C to 100 °C, accommodating diverse industrial environments. The surge protection device also features a nominal discharge current of 10 kA (line-ground) and an impressive total discharge capacity of 20 kA (8/20 µs), ensuring robust protection against voltage spikes.

With a compact design measuring 28 mm x 28 mm x 79 mm and constructed from stainless steel 1.4404, the device is suitable for various installation scenarios, maintaining a high degree of reliability and performance.