PILZ PNOZ S4 24VDC Safety Relay

The PILZ PNOZ S4 24VDC Safety Relay is a critical component designed for monitoring safety functions such as E‑STOP pushbuttons, safety gates, and light beam devices. It complies with the stringent requirements of EN 60947‑5‑1, EN 60204‑1, and VDE 0113‑1, and is certified as a safety component in accordance with the Lift Directive 95/16/EC and EN 81‑1, making it suitable for a wide range of industrial and lift applications.

This safety relay features positive‑guided relay outputs for maximum reliability, including three safety contacts (normally open), one auxiliary contact (normally closed), and one instantaneous semiconductor output. For system expansion, a connector is provided to link one PNOZsigma contact expander module. The operating mode is easily configured via a rotary switch, while LED indicators provide clear status feedback at a glance.

Installation is straightforward thanks to plug‑in connection terminals that accept either spring‑loaded or screw terminal connections. The device supports a broad supply voltage range of 24 VDC or 48‑240 VAC/VDC, offering excellent flexibility for different electrical environments. With a robust construction and a compact footprint, it is built to deliver dependable safety performance in demanding conditions.

Key Specifications

• Coil Voltage: 24 VDC
• Contact Configuration: 3 PST‑NO (positive‑guided safety contacts)
• Auxiliary Contact: 1 NC (instantaneous)
• Semiconductor Output: 1
• Contact Current Rating: 6 A
• Contact Voltage Rating: 240 V AC / 24 V DC Nominal
• Contact Material: Silver Copper Nickel alloy for long service life
• Mounting: Standard DIN Rail
• IP Ratings: IP20, IP40, IP54 (depending on installation)
• Dimensions: 43 mm (H) × 33 mm (W) × 15 mm (D)
• Weight: 194 grams The PILZ PNOZ S4 is an essential, high‑integrity safety‑sw