Keep your machine processes running smoothly and ensure optimal protection for equipment and personnel with the 440K-E33036 Elf Safety Interlock Switch, by Allen Bradley Guardmaster.

This space-saving, cost-effective safety switch is specifically designed for use with smaller machinery such as printers, copiers, and domestic machinery due to its unique miniature housing. It is the smallest in the industry at only 75mm x 25mm x 29mm. This switch is operated by inserting a specially profiled key, which is permanently fixed to the door. It features a rotatable head with 2 entry slots, and can provide up to 8 different actuator entry positions.

The 440K-E33036 Elf safety switch has M16 conduit entry and a flat type actuator made of robust stainless-steel. It has break-before-make action. The contacts are 1NC safety, 1NO auxiliary. This switch has a high environmental protection rating of IP67. This ensures that it is perfectly suited for use in wet environments as it can withstand regular washdowns, and it is also protected against ingress of dust. The housing is made of resilient UL approved glass-filled PBT, which is red for greater visibility of the unit. It has a voltage rating of 600VAC/DC.

The Elf interlock switches are suitable for use on the leading edge of lift-off, hinged, and sliding machine guard doors. This unit comes with a blanking plug to seal the unused entry slot.

• Easy installation
• Perfect for small, lightweight guards due to its compact size
• Rotatable head with 8 actuator entry options for enhanced versatility
• Durable and reliable due to high IP67 environmental protection rating – water-tight, no ingress of dust
• The smallest interlock switch available

EN954-1
ISO13849-1
IEC/EN60204-1
NFPA79, EN1088
ISO14119
IEC/ EN60947-5-1
ANSI B11.19
AS4024.1
IP67 rated
UL approved
CE certified

Safety interlock switches work by securely locking guard doors and gates, preventing unsafe access to hazardous areas where machinery may be in operation. This helps to decrease the risk of injury to personnel and damage to machinery. They can also be used to monitor the status of the machine guard, and to ensure that machinery cannot start up or run while the guard door is open. They are often utilised in industrial applications, such as safeguarding factory production lines. They can vary in lock type, maximum current and voltage, and housing material. These interlock switches are specifically designed to meet high standards of protection.

Rockwell Automation is a global leader in industrial automation and digital transformation, and brings smart manufacturing to life. With a long legacy of creating Allen-Bradley® integrated control and information solutions, we help make you as productive as possible. Our portfolio of sensing, safety and motor control products can support your move towards smart machine applications. Allen-Bradley® IO-Link sensors are data-enabled and communicate with all field buses, providing diagnostic and health information about the device before a machine stops, and enabling quick production changeovers through fast parameter downloads from PLCs into the device. This reduces machine downtime and increases manufacturing OEE. For safety components, products with built-in diagnostics simplify the set-up of the smart device, and reduce maintenance, leading to a more efficient, machine data-driven approach.