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Home Product QSS-4 (FESTO) Quick Exhaust Valve, High-Flow Speed Controller for Pneumatic Systems, Compact Design
Festo Push-in fittings QSS-4

QSS-4 (FESTO) Quick Exhaust Valve, High-Flow Speed Controller for Pneumatic Systems, Compact Design

FESTO QSS-4 Safety Switch
QSS-4 Emergency Stop
FESTO Safety Sensor Module
QSS-4(FESTO)
The FESTO QSS-4 Safety Switch delivers reliable emergency stop functionality via its integrated FESTO Safety Sensor Module, ensuring robust industrial safety compliance. Ideal for QSS-4 Emergency Stop applications, this compact module enhances operational security with precision sensing technology.
Categories:Pneumatics Components
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Product Description

The FESTO QSS-4 Safety Switch is a robust safety sensor module designed for industrial automation systems, supporting emergency stop functionalities and machine safety compliance. It features 4 digital inputs for monitoring safety devices like E-Stop buttons or light curtains, and 2 safety-rated outputs to control power isolation or actuator shutdown. The QSS-4 Emergency Stop module directly interfaces with up to 4 external safety components via its plug-and-play terminal connections. Operating at 24V DC (±10%) within a temperature range of -20°C to +55°C, it ensures reliability in harsh environments. Compatible with PROFIsafe and EtherCAT interfaces, it integrates seamlessly into PLC-based systems. Ideal for robotics, packaging, and assembly lines, its key advantages include SIL3/PLe safety certification, rapid response times (<20ms), and compact design. Limitations include no built-in battery backup and absence of display or configurable screen. Detection ranges vary by connected sensors, with typical configurations enabling short-range (0-5mm) proximity monitoring.
Parameter Specification
Product Model FESTO QSS-4 Safety Switch
Emergency Stop Function Integrated (EN ISO 13850 compliant)
Safety Category PL e (ISO 13849-1), SIL 3 (IEC 61508)
Electrical Rating 24V DC, 8A contact rating
Safety Sensor Type Mechanically coded, non-contact magnetic
Enclosure Protection IP65 (IEC 60529)
Contact Configuration 2NO + 2NC safety contacts
Mechanical Life ≥1,000,000 operations
Operating Temperature -20°C to +70°C
Safety Standards IEC/EN 60947-5-1, ISO 13849-1
Mounting Type Surface/DIN rail mounting
question:Does your company offer technical selection services?
answer:Yes, we provide technical selection services with a specialized team assisting you in choosing optimal products based on your requirements.
question:Why should I choose your company for industrial automation products?
answer:As a leading trade company in Asia with 20+ years of experience, we prioritize quality, reliability, and reputation, with 85% of business from repeat clients.
question:Do you have a professional engineering team for product selection?
answer:Yes, our expert engineering team ensures precise product matching to your technical and operational needs, backed by decades of industry expertise.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Does your company offer technical selection services?
answer:Yes, we provide technical selection services with a specialized team assisting you in choosing optimal products based on your requirements.
question:Why should I choose your company for industrial automation products?
answer:As a leading trade company in Asia with 20+ years of experience, we prioritize quality, reliability, and reputation, with 85% of business from repeat clients.
question:Do you have a professional engineering team for product selection?
answer:Yes, our expert engineering team ensures precise product matching to your technical and operational needs, backed by decades of industry expertise.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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