Allen Bradley Guardmaster 440N Series Magnetic Non-Contact Safety Switch, 24V dc, Plastic Housing, 10m Cable

The 440N-Z21W1PB MC2 Magnetic Non-Contact Safety Switch by Allen Bradley Guardmaster ensures exceptional protection for equipment and machine operators. The MC2 switch is expertly designed to meet the risks of more complex modern safety guard monitoring applications.

This unit combines several magnetically sensitive elements which must be activated in a specific order to work correctly and allow the safety barrier to open. This improves guard door security and helps to decrease risk of injury to machine operators from hazardous equipment, minimising downtime.

The 440N-Z21W1PB MC2 safety switch has 2NC solid state relay safety outputs and 1xPNP auxiliary output, 0.2A max. It has a 10m cable and the supply voltage rating is 24 V dc. It features LED indication which allows quick and easy diagnostics and door status. This cost-effective switch is IP69K rated and is protected against ingress of dust particles and powerful jets of water, offering high reliability and durability. The operating distance is 10mm (make), 25mm (break). This unit has red housing to ensure high visibility of the switch.

The versatile sensor offers simple, effortless installation due to its small size and moulded-in brackets. For high-risk applications a control unit is used with a single sensor to provide a high-integrity system. For other applications, multiple sensors (including mechanical switches) can be connected.

• Magnetic coded sensing for superior security
• High tolerance to guard door misalignment
• Non-contact actuation ensures less wear-and-tear and longer service life
• Rapid troubleshooting due to LED indicator
• Designed for use with specified controllers
• Perfectly suited for harsh wash-down environments due to excellent IP69K rating

EN954-1
ISO13849-1,
IEC/EN60204-1
NFPA79
EN1088
ISO14119
IEC60947- 5-1
IEC/EN60947-5-3
ANSI B11.19
AS4024.1
CE certified
UL listed
TÜV certified
IP69K rated

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.

A magnetically coded non-contact switch is a device used for monitoring the position of machine safety barriers. They are typically used in industrial environments. It uses a magnetically-actuated reed contact and a specially-coded actuator. When the barrier is opened the contacts will either open or close due to the magnetic force interrupting the circuit. As there is no contact between the sensor and actuator they take less wear, are resistant to shocks and vibrations, and are highly tamper-proof, which gives them a long service life. They are often used for sliding, hinge, and removable gates.