Pilz PNOZ s4 Safety Relay

Pilz PNOZ s4 Safety Relay (24 V DC, 3 n/o 1 n/c) Specifications:

• Product Type: Safety Relay (standalone)
• Manufacturer: Pilz GmbH & Co. KG
• Model: PNOZ s4 (750104; legacy references: PNOZ 4 24VDC 3S1S10)
• Device Application: Monitoring of E-STOP pushbuttons, safety gates, light barriers, and light grids
• Supply Voltage: 24 V DC
• Voltage Tolerance: -15% / +10%
• Power Consumption: 2.5 W (DC)
• Residual Ripple: 20%
• Duty Cycle: 100%
• Max. Inrush Current Impulse: 0.5 A for 5 ms
• Inputs: 2 (1-/2-channel wiring with/without detection of shorts across contacts)
• Input Voltage: 24 V DC
• Input Current: 50 mA
• Max. Inrush Current at Inputs: 0.2 A (pulse duration 100 ms for input circuit), 0.2 A (15 ms for feedback loop and start circuit)
• Min. Input Resistance at Power-On: 110 Ohm
• Max. Overall Cable Resistance (Rlmax):
  • Single-channel at UB DC: 30 Ohm
  • Dual-channel without detection of shorts across contacts at UB DC: 60 Ohm
  • Dual-channel with detection of shorts across contacts at UB DC: 30 Ohm
• Start Circuit: Automatic or manual/monitored start
• Feedback Loop: Yes, for monitoring external contactors
• Cross-Wire Monitoring: Yes
• Relay Outputs:
  • Safety contacts: 3 N/O (normally open), instantaneous
  • Auxiliary contact: 1 N/C (normally closed), instantaneous
  • Max. Short Circuit Current (IK): 1 kA
• Utilisation Category (EN 60947-4-1 / EN 60947-5-1):
  • Safety contacts AC1 at 240 V: Min. current 0.003 A, max. current 6 A, min. output 0.04 VA, max. power 1500 VA
  • Safety contacts DC1 at 24 V: Min. current 0.003 A, max. current 6 A, min. output 0.04 W, max. power 150 W
  • Safety contacts AC15 at 230 V: Max. current 5 A
  • Safety contacts DC13 (6 cycles/min) at 24 V: Max. current 5 A
  • Auxiliary contacts: Similar to safety contacts, with max. current 5 A for AC15 and DC13
• Semiconductor Outputs: 1 (signal output Y32)
  • Voltage: 24 V
  • Current: 20 mA
  • Residual current at "0" signal: 0.1 mA
  • Max. internal voltage drop: 5 V
  • Conditional rated short circuit current: 100 A
  • Lowest operating current: 0 mA
  • Utilisation category: DC-12 (EN 60947-1)
• Switching Capacity: Max. 12 A DC1 (total for all contacts)
• External Contact Fuse Protection: 6 A slow blow or 10 A quick blow
• Safety Level: PL e / Cat. 4 (EN ISO 13849-1), SIL CL 3 (EN IEC 62061)
• Proof Test Interval: 20 years
• Mechanical Lifetime: > 10,000,000 operations
• Electrical Lifetime: > 100,000 operations at rated load
• Release Time: Max. 18 ms
• Recovery Time: Max. 100 ms
• Mounting: DIN rail (35 mm)
• Connection Type: Screw terminals (plug-in)
• Terminal Cross-Section: 0.25–2.5 mm² (single-core), 0.25–1.5 mm² (multi-core with crimp connector)
• Housing Material: Plastic (flame-retardant)
• IP Degree of Protection: IP20 (terminals), IP40 (front face), IP54 (housing)
• Ambient Air Temperature for Operation: -10 to 55 °C
• Ambient Air Temperature for Storage: -40 to 85 °C
• Relative Humidity: 5–93 % (non-condensing)
• Operating Altitude: Up to 2000 m
• Vibration Resistance: 10–55 Hz, amplitude 0.35 mm (EN 60068-2-6)
• Shock Resistance: 15 g / 11 ms (EN 60068-2-27)
• EMC: EN 60947-5-1, EN 61000-6-2, EN 61000-6-4
• Standards Compliance: EN IEC 62061, EN ISO 13849-1, EN 60204-1, EN 60947-5-1, VDE 0113-1
• Product Certifications: CE, cULus, EAC (Eurasian), CCC, TÜV, UKCA, KOSHA
• Special Features:
  • LED indicators for channel 1, channel 2, power, and fault
  • Positive-guided relay outputs
  • Plug-in terminals for easy installation
  • Suitable for applications up to Safety Category 4
• Dimensions:
  • Width: 22.5 mm
  • Height: 120 mm
  • Depth: 98 mm
• Weight: 0.45 kg
• HS Code: 8536.49.00 
• Country of Origin: Germany