PRODUCT DESCRIPTION
SIEMENS 3SK1211-2BB40 - Safety Relay Basic Unit
This component is a SIEMENS SIRIUS 3SK1 safety relay basic unit, designed for monitoring safety-related circuits in industrial automation applications. It provides safety functionality for emergency stop buttons, safety gates, and light curtains, ensuring compliance with machine safety directives. The unit integrates into control systems to manage hazardous machine movements through its fail-safe output architecture.
Technical Specifications:
- SERIES/FAMILY: SIRIUS 3SK1 Safety Relays
- COMPONENT TYPE: Safety Relay Basic Unit
- ELECTRICAL SPECS:
- NOMINAL SUPPLY VOLTAGE: 24V DC
- POWER CONSUMPTION: 2.5W
- SAFETY OUTPUTS: 2 NO enabling current paths, 5A at 230VAC (resistive load)
- AUXILIARY OUTPUTS: 1 NC auxiliary output, 2A at 230VAC (resistive load)
- INPUTS: 2-channel inputs for safety sensors
- MECHANICAL/PHYSICAL:
- TERMINAL TYPE: Screw terminals
- MOUNTING: DIN rail (35mm)
- FORM FACTOR: Modular industrial housing, 22.5mm width
- INTERFACE/CONTROL:
- RESET FUNCTION: Configurable manual or automatic start
- DIAGNOSTICS: Integrated LED status indicators
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20 (terminals), IP40 (housing)
- COOLING METHOD: Natural convection
- OPERATING TEMPERATURE: -25 to +60 degrees C
- COMPATIBILITY/APPLICATION:
- TARGET SYSTEMS: Emergency stop circuits, safety gate monitoring, light curtain monitoring, two-hand control
- STANDARDS: Conforms to EN ISO 13849-1 (up to PL e), IEC 62061 (up to SIL 3)