Siemens 5TT4201-1 Relay Switch

Siemens 5TT4201-1 is a DIN-rail mounted SENTRON safety relay with a 115 V AC coil and a single normally open (NO) contact rated for up to 16 A at 230 V AC. This 5TT4201-1 module serves as a simple, single-pole interface that translates a 115 V control signal into a robust power path for AC equipment, making it ideal for safety circuits in industrial automation and building technology. Use cases include emergency-stop interlocks, machine guarding, door interlocks, and safety monitoring loops where a fail-safe relay action is required to ensure that de-energizing the coil opens the contact. The device is designed for DIN rail installation, integrating into control panels alongside other automation components. As part of Siemens SENTRON safety relays lineup, the 5TT4201-1 provides a compact, modular solution for reliable AC switching with a 115 V control coil, enabling compatibility with common 115 V control circuits while switching 230 V AC loads up to 16 A.