Siemens Spring, 3SE71 Seriesx2pcs

Siemens 3SE71 Series Spring Product Overview

The Siemens 3SE71 Series Spring (2pcs) is a reliable accessory designed for use with 3SE7 emergency grab wire switch systems. It ensures proper tension and smooth mechanical operation, which is essential for maintaining safety and performance in industrial environments.

Technical Specifications

About 3SE7 Emergency Grab Wire Switch

The Siemens 3SE7 Emergency Grab Wire Switch is designed for monitoring and emergency stop applications in hazardous areas. It protects operators by allowing quick shutdown of machinery through a pull wire system.

Key Features

• Suitable for emergency stop (E-Stop) applications
• Effective over long distances (limited only by wire length)
• Supports large conveyor and industrial systems
• Available with LED indicator (24V DC) for visibility up to 50m
• Positive opening NC contacts for enhanced safety
• Metal housing for durability
• IP65 protection for dust and water resistance
• Wide operating temperature range (-25°C to +70°C)

 Design & Configurations

• Conveyor belt unbalance trackers available
• Options with factory-fitted LED indicator
• Suitable for long belt monitoring systems

Functionality

• NC contacts operate with positive opening mechanism
• Pre-tensioned wire ensures stable operation
• Supports wire-break and wire-pull signaling
• NO contact can be used for signal indication
• Interlocking models require manual reset before restart

Safety & Compliance

• Complies with EN ISO 13850 (Emergency Stop systems)
• Suitable up to Category 4 as per EN 954-1
• Equipped with positive latching mechanism
• Certified with UL Certification and CSA Certification

Applications

• Conveyor belt systems
• Industrial automation lines
• Material handling systems
• Hazardous machine zones
• Emergency stop safety setups