Allen-Bradley 840-A42 is an automatic float switch designed for tank or sump level control. This Style A switch features two normally closed (N.C.) contacts for safety circuit applications. It is rated for NEMA Type 4 enclosure protection, suitable for indoor or outdoor use where water and dust ingress is a concern. The switch provides reliable operation for pump control, high/low level alarms, and liquid level monitoring in industrial environments.

Limit Switches The Allen Bradley 840-A42 Automatic Float Switch is a high-performance limit switch specifically designed for tank or sump operations. This robust device features two normally closed (N.C.) contacts and is engineered to ensure reliable performance in demanding environments, making it an essential component in industrial automation applications.

Key Features

• Type A Float Switch Design: Optimized for automatic operation, providing consistent performance in liquid level detection.
• NEMA Type 4 Enclosure: Offers protection against dust and water, ensuring operation in harsh environments.
• Two Normally Closed Contacts: Facilitates safe operation by ensuring that the circuit opens under fault conditions.
• Durable Construction: Designed for long-lasting performance, minimizing maintenance needs and downtime.
• Versatile Applications: Suitable for various tank and sump applications across multiple industries, ensuring compatibility with existing systems.

Applications

• Tank Level Control: Ideal for monitoring and controlling liquid levels in tanks, providing accurate detection and control.
• Sump Pump Operations: Effective in sump applications, ensuring reliable operation to prevent overflow and maintain optimal liquid levels.
• Industrial Automation Systems: Integrates seamlessly into broader automation systems for enhanced operational efficiency.

Benefits

• Enhanced Reliability: The robust design and NEMA Type 4 rating ensure dependable operation, even in challenging conditions.
• Safety Assurance: The normally closed contacts provide an added layer of safety, ensuring that equipment operates only under safe conditions.
• Operational Efficiency: Streamlines tank and sump management, reducing the risk of overflows and optimizing resource use. --- Product information compiled with AI assistance for reference purposes.