Allen Bradley Guardmaster 440G-LZ Series Solenoid Interlock Switch, Power to Unlock, 24V dc, Actuator Included

The 440G-LZS21STRH Guard Locking Switch by Allen Bradley Guardmaster offers superior protection for your machinery and personnel.

This reliable safety switch is designed perfectly for partial body access guard doors. It ensures that your safety guard can only be released when machinery has come to complete stop, restricting access to unsafe areas. The 440G-LZS21STRH switch has efficient microprocessor technology with an RFID coded actuator, and it features a secure locking bolt drive mechanism that only locks when it detects the correct actuator. The switch holds the highest level of safety for guard door position and lock monitoring as it is TÜV certified to Ple, Cat. 4 (EN/ISO 13849-1).

Allen Bradley Guardmaster have a broad range of machine monitoring and safety devices to meet all your application requirements. Their products are cost-effective, high-quality, and built to global standards to help keep your operations running smoothly, protect your personnel, and optimise productivity.

• Power to unlock functionality
• Contacts (Safety and Aux): 2 x PNP (0.2A max.), 1 x PNP (0.2A max.)
• High holding force of 1300N (292 lbs) for superb security and stability
• Hygienic design and excellent IP69K rating which ensures that it is dust-tight and can withstand powerful jets of water, making it ideal for use in harsh wash-down applications
• 270 degree wrap-around LEDs for fast diagnostics and troubleshooting
• Highly energy efficient as it has a bi-stable solenoid design and advanced algorithms, which ensure that it uses up to 60% less power compared to competitive guard locking switches
• It can be connected directly or in series with other PLe, Cat 4 rated safety devices
• Compact design for flexibility and ease of mounting
• QR code on the switch linking directly to the online user manual for rapid troubleshooting
• Solid-state design and monitored outputs

A solenoid interlock switch is a type of safety switch with an internal solenoid; a wire coil which converts electrical energy to mechanical. This type of interlock mechanism prevents access to hazardous areas where machinery is in motion by ensuring that that safety barriers remain securely locked. The guard can only be released through either energising (Power to unlock) or de-energising (Power to Lock) the solenoid with an external signal. They are often used in industrial environments, for example with high inertia rotating machines.

This safety device can be used with Guardlink, a new safety linking technology from Allen Bradley Guardmaster.
Guardlink simplifies and reduces the connection time of the safety system, whilst providing real-time diagnostic information over Ethernet IP. This makes it simple to identify the location of the device that has tripped the safety system, thus reducing downtime, and improving the machines overall efficiency. For more details, please go to the Guardlink brochure.