Allen-Bradley 440N-Z21S16H

Allen-Bradley 440N-Z21S16H | Rugged Trojan 5 Safety Interlock Switch for Machine Guarding

Overview

The Allen-Bradley 440N-Z21S16H is a Guardmaster Trojan 5 safety interlock switch, designed to monitor safety gates and guard doors in industrial environments. With a durable housing, 2 normally closed (NC) and 1 normally open (NO) contact arrangement, and a 16mm conduit entry, this switch provides dependable safety in harsh conditions with IP67-rated protection.

Key Features

• Contact Configuration: 2NC (safety) + 1NO (auxiliary)

• Housing Material: High-strength, impact-resistant thermoplastic

• Conduit Entry: 16mm threaded entry for cable gland connection

• Ingress Protection: IP67-rated for washdown and dusty environments

• Mechanical Actuation: Key-operated for positive mode actuation

• Positive Opening: Ensures contacts physically separate when the guard is opened

• Multiple Actuator Entry Points: Enhances installation flexibility

• Compact and Robust Design: Ideal for space-constrained and harsh applications

Technical Specifications

• Catalog Number: 440N-Z21S16H

• Rated Operational Voltage: 24V DC / 240V AC max

• Thermal Current (Ith): 10A

• Rated Insulation Voltage (Ui): 300V

• Contact Material: Silver alloy

• Mechanical Life: Over 1 million operations

• Electrical Life: Over 100,000 operations at full rated load

• Operating Temperature Range: –25°C to +80°C

• Mounting: Direct on guards or machine doors

• Standards Compliance: ISO 14119, EN 60947-5-1

Applications

• Machine guarding systems

• Safety monitoring of access doors

• Robotic cells

• Packaging machinery

• Pharmaceutical and food processing industries

Why Choose the 440N-Z21S16H?

• High Protection Rating: IP67-rated for extreme environments

• Enhanced Safety: Positive opening ensures reliable disconnection

• Flexible Wiring: 16mm conduit entry supports various wiring setups

• Long Service Life: Mechanical and electrical durability

• Compact Design: Fits easily into existing machine frameworks

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