SIEMENS 3SK1111-1AB30 SIRIUS safety relay

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SIEMENS 3SK1111-1AB30 SIRIUS Safety Relay

Product Description

The SIEMENS 3SK1111-1AB30 is a dual-channel safety relay from the SIRIUS 3SK1 series, designed for emergency stop (E-stop) and safety circuit monitoring in industrial automation. It complies with EN 60204-1, ISO 13850, and IEC 61508 standards, ensuring SIL 3 (IEC 62061) and PL e (Category 4, ISO 13849-1) safety levels. The relay features positive-driven contacts, self-monitoring, and configurable inputs/outputs for fail-safe operation .

Key Features & Advantages

1. High Safety Compliance

   • Dual-channel monitoring with cross-circuit detection to prevent faults .

   • SIL 3 (IEC 61508) and PL e (ISO 13849-1, Category 4) certified for critical applications .

2. Flexible Configuration

   • 3 safety-related NO (normally open) contacts and 1 non-safety NC (normally closed) signal circuit .

   • Single or dual-channel sensor input (supports emergency stop buttons, door switches, light curtains) .

3. User-Friendly Operation

   • Sliding switch for function setting and LED status indicators (ON/OFF/TRIP) .

   • Automatic or monitored reset options for different safety requirements .

4. Robust Industrial Design

   • DIN rail mounting (22.5mm width) with screw terminals for secure wiring .

   • IP20 protection against dust and accidental contact .

5. Wide Application Range

   • Emergency stop monitoring (ISO 13850) .

   • Safety door/gate monitoring (with mechanical or magnetic switches) .

   • Light curtain & laser scanner integration for machine guarding .

Technical Specifications

Installation & Safety Notes

• Wiring: Use shielded cables for noise-sensitive applications .

• Environment: Avoid condensation or corrosive gases (IP20 rating) .

• Testing: Perform regular functional tests to ensure relay integrity .

The structure and details of the product：

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