Phoenix Contact PSR-ESA Emergency Stop Safety Relay, 24V ac/dc, Single Channel, 4 Safety Contacts

The PSR classic safety relays for single or two-channel emergency stop (E-Stop) and safety door monitoring from Phoenix Contact can be connected easily without the need for additional settings on the relay. They are an excellent solution when your system or machine only requires a few reliable safety functions.

• Large selection of safety functions
• 1 signalling current path
• Manual monitored and automatic activation in one
• Basic or reinforced insulation
• Screw or spring-cage connection available
• Able to switch functions easily
• LED status display for fast wiring and clear diagnostics
• Fast installation and start-up

Up to Cat. 4/PL e (ISO 13849-1), SILCL 3 (IEC 62061), SIL 3 (IEC 61508).

Choose this easy-to-use safety relay from Phoenix Contact to control emergency stop-buttons and safety doors in industrial environments. It's a self-monitoring device, which means it self-tests its opening and closing function after every cycle. This makes it a reliable device for use in fast-paced environments. It can be controlled manually – such as when you want to stop a machine in an emergency – or automatically, with safety doors, for example.
This component has LED (light-emitting diode) indicators that give an operating status display that makes wiring and troubleshooting easy. For electrical safety, it has a surge suppressor diode that arrests voltage spikes before they can cause damage. With a robust polybutylene terephthalate (PBT) housing, this safety relay is durable and can withstand substantial impact, so it won't break under pressure.

• Silver tin oxide contacts for reliable connections and corrosion resistance
• Mechanical service life of 10,000,000 cycles for long-term performance
• IP20 (ingress protection) rated to withstand dust and objects larger than 12mm
• Wide operating temperature range of -20°C to +65°C for use in demanding environments