The Pilz 301140 (PNOZ X3) is a multi-function safety relay designed for a wide range of safety applications. It can monitor emergency stop buttons, safety gate switches, two-hand controls, and light curtains. The unit features three safety outputs (2 NO, 1 NC) and one auxiliary output, with a universal power supply of 24V AC/DC.
Supply Voltage: 24 V AC/DC (21.6-26.4 V AC/DC)
Power Consumption: 3 VA (AC), 2.5 W (DC)
Safety Contacts: 2 NO + 1 NC (forced-guided)
Auxiliary Contact: 1 NO (non-safety)
Contact Rating: 6 A at 230 V AC (resistive), 5 A at 24 V DC
Safety Integrity Level: PL e (EN ISO 13849-1), SIL CL (IEC 61508)
Response Time:<30 ms
Inputs: 2 channels for E-stop/guard door; also supports two-hand control (type III A/B)
Recovery Time: 30 ms (after reset)
Operating Temperature: -10°C to +55°C
Dimensions: 90 × 45 × 87 mm
Certifications: CE, UL, TÜV, BG, CCC

The PNOZ X3 can be configured for different functions by wiring the inputs accordingly:
Emergency stop / Guard door: Dual-channel, monitored start (auto or manual reset).
Two-hand control: Monitors simultaneous actuation of both buttons (type III A or B).
Light curtain: Monitors OSSD outputs from safety light curtains.
The relay has front-panel LEDs for power, input status, and output status. The terminals are clearly labeled for easy wiring. The unit is designed for DIN rail mounting and meets the requirements of EN 60204-1 and EN 13849-1.
Common applications include presses, injection molding machines, conveyors, and robotic work cells. The PNOZ X3 is also used in packaging lines and woodworking machinery.



