440G-T21BNPM-2B
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Overview of Allen Bradley 440G-T21BNPM-2B
The Allen Bradley 440G-T21BNPM-2B is a TLS-GD2 safety switch engineered for high-reliability guarding and safety applications in industrial environments. Manufactured by Rockwell Automation, this device ensures machine guarding compliance with safety standards such as SIL 3 and PLe Cat 4. It features a robust plastic enclosure with protection ratings IP66, IP67, and IP69K, suitable for harsh and demanding settings including washdown and outdoor conditions. The switch facilitates secure door position monitoring and guard locking with built-in escape release and auxiliary release options for enhanced safety and operational flexibility. The 440G-T21BNPM-2B operates on 24 VAC/DC, delivering reliable performance with low power consumption. This safety switch is an ideal choice for machine builders and end-users requiring dependable and certified safety components integrated into automated manufacturing and processing lines.
Key Features of Allen Bradley 440G-T21BNPM-2B
- Certified to safety integrity level SIL 3 and performance level PLe, Category 4 for high safety assurance
- IP66, IP67, and IP69K rated plastic enclosure for protection against dust, water jet, and high-pressure washdown
- Dual safety outputs: 2 x PNP with a maximum output current of 0.2 A each
- Built-in escape release and auxiliary release access screw for emergency unlocking
- Operating voltage of 24 V AC/DC with low quiescent power consumption of about 1.5 W
- Mechanical life rating of up to 500,000 cycles ensuring long-term durability
- Holding force up to 3250 N compliant with ISO 14119 guard locking standards
- Response and startup times designed to meet industrial safety requirements, with 275 ms response off time and 8-second startup availability
Technical Specs of 440G-T21BNPM-2B
| Specification | Value |
|---|---|
| Enclosure Rating | IP66, IP67, IP69K |
| Material | Plastic |
| Operating Voltage | 24 VAC/DC (+10% / -15%) |
| Safety Outputs | 2 x PNP Outputs, 0.2 A max each |
| Holding Force | 3250 N (ISO 14119) |
| Mechanical Life | 500,000 cycles |
| Operating Temperature | 0 to 55 °C (32 to 131 °F) |
| Storage Temperature | -25 to 75 °C (-13 to 167 °F) |
| Response Time (Off) | 275 ms |
Applications / Use Case
The Allen Bradley 440G-T21BNPM-2B safety switch is widely used in industrial automation to safeguard access points on machinery and equipment. It is ideal for guarding doors, gates, and covers where machine operation must be disabled during access to hazardous areas. The switch supports applications in automotive assembly lines, packaging machinery, food and beverage processing plants, and material handling systems. Its high ingress protection ratings make it suitable for environments exposed to moisture, dust, and cleaning agents. With safety certifications meeting global standards, it helps protect personnel by ensuring machines cannot operate while guards are open and providing emergency escape release in critical situations. The device integrates easily with safety PLCs and control systems, supporting reliable machine safety and compliance with occupational safety regulations.
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