Schneider Electric | XPSAC5121 Emergency Stop Module (24 V AC/DC)

Safeguard your machinery with the XPSAC5121, a rugged and reliable emergency stop (E‑Stop) safety relay from Schneider Electric’s renowned Preventa XPSAC series. Engineered to meet stringent industrial safety standards, this module ensures exceptional protection and seamless integration into modern automation systems.

Key Features & Benefits

• Dual Voltage Support (24 V AC/DC)
  Operates on both 24 V AC or DC power—perfect for flexible setups. 

• High Safety Performance
  Achieves Performance Level e (Category 4) per EN/ISO 13849‑1 and SIL CL 3 per EN/IEC 62061 for robust hazard prevention. 

• Emergency Stop & Switch Monitoring
  Continuously monitors E‑Stop pushbuttons and limit switches, enhancing system responsiveness and safety.

• Reliable Outputs

  • 3x safety relay outputs (3 NO, volt‑free) for machine shutdown.

  • 1x solid-state output for feedback to PLCs—ideal for modern control architectures.

• Redundant and Efficient Design
  Microprocessor‑based redundancy offers dependable performance in safety‑critical environments.

• Clear Diagnostics
  Onboard LEDs provide instant visual feedback on module status—minimizing diagnostics time. 

• Compact DIN‑Rail Form Factor
  Slim 22.5 mm width—useful for space‑constrained installations. Mounts quickly on 35 mm standard DIN‑rail.

• Low Power Consumption
  Efficient—consumes just 40 mA (24 V DC) or 90 mA (24 V AC), reducing energy overhead. 

• High Reliability Metrics

  • MTTFd: ~210.4 years

  • Diagnostic Coverage (DC): >99%

  • PFHd: 3.56 × 10⁻⁹ per hour

• Standards & Certifications
  Compliant with safety and electrical standards such as EN/ISO 13849‑1, EN/IEC 60204‑1, EN 1088, UL, CSA, TUV etc.

Technical Specifications

(Compiled from Schneider Electric datasheets and distributor sources.)

Ideal Applications

• Automated assembly & packaging lines

• Industrial motor control & processing machinery

• Safety circuits (e.g., two-hand or light curtain systems)

• Systems needing emergency stop functionality with diagnostics and PLC integration

Upgrade & Replacement Information

As of February 24, 2025, Schneider Electric designated the XPSBAC14AP (Harmony XPS series) as the official replacement for the XPSAC5121 model for your future-proofing needs.

Why Choose XPSAC5121?

• Top-tier safety with high PL and SIL ratings

• Compact and efficient design for modern automation setups

• Easy diagnostics—LEDs and solid-state feedback simplify maintenance

• Reliable and energy‑saving with impressive longevity

• Industry compliant—ensuring adherence to global safety standards