Siemens 3SK1111-1AB30 Safety Relay 3NO 1NC 24V AC/DC Screw 3SK11111AB30

Description:

The Siemens 3SK1111-1AB30 safety relay is used in industrial safety control systems for monitoring emergency stop and safety circuits. Commonly installed in machinery safety systems, production lines, and automated equipment. Maintenance teams, OEMs, and system integrators use this part for replacement, retrofit, and ensuring safe shutdown and protection of personnel and equipment.

Applications:

The Siemens 3SK1111-1AB30 (SIRIUS 3SK1) is designed to monitor safety devices such as emergency stop buttons, safety gates, and light curtains. It is widely used in manufacturing, robotics, packaging systems, and machine automation where reliable safety circuit monitoring, fault detection, and compliance with safety standards are critical for operational safety.

Technical Specifications:

• Manufacturer Part Number (MPN): 3SK1111-1AB30
• Product Type: Safety Relay
• Series: SIRIUS 3SK1 Standard
• Supply Voltage: 24 V AC/DC
• Safety Outputs: 3 NO (normally open) contacts
• Auxiliary Outputs: 1 NC (normally closed) contact
• Safety Category: Up to Category 4 (EN ISO 13849-1)
• Mounting Type: DIN rail
• Connection Type: Screw terminals
• Operating Temperature: -25°C to +60°C
• Protection Class: IP20
• Dimensions: Approx. 22.5 × 100 × 121.6 mm

Common Replacements:

• Siemens 3SK1111-2AB30
• Siemens 3SK1121-1CB41
• Siemens 3TK2821-1CB30