The PSR Mini PS21 Optocoupler is a coupling relay that can be used for power adaptation and electrical isolation in high and low-demand applications up to SIL 2. When using this module, circuits are interrupted in a safety-oriented manner.

Used in applications up to 2 SIL according to IEC 61508 & EN 50205
Used for safety-related switching off
6.8mm housing width
Approved for Class l, Zone 2 applications
Can be used in high and low-demand applications
Integrated DCS test pulse filter
Low inrush current
1 undelayed enabling current path
1 undelayed confirmation current path
1 digital signal output
Fixed screw connection

IEC 61508, EN 50205

This optocoupler from Phoenix Contact provides you with a simple and reliable way of adapting your power or isolating a device in your electrical circuit. It's designed for simple mounting on a DIN rail and has a compact width of just 6.8mm, so it takes up minimal space. An isolation voltage of 3500V and a maximum forward voltage of 24V make it suitable for both high and low-power circuits.
The coupler relay features a corrosion-resistant protective coating on the PCB (printed circuit board) for enhanced performance. It meets IEC (International Electrotechnical Commission) standard 61508 for the design of electrical safety systems, so you can be sure it's safe to use. The filtering of controller test pulses increases the mechanical lifespan to a maximum of 10,000,000 cycles, so it's an efficient and long-lasting component. Use this product in automated production lines in light industry and telecommunications networks.

• IP54 (ingress protection) rating means it's protected against dust and water sprays
• Approved for use in Class I, Zone 2 applications where hazardous gases or vapours may be present for short periods of time
• Broad operating temperature range of -40°C to +65°C for use in a variety of environments