A-B 800T-U29 APM Modem Card

Product Detailed Description

• Function: The 800T-U29 serves as a momentary control device. When the operator is pressed, it actuates internal contact blocks, changing the state of electrical circuits (e.g., making a contact, breaking a contact). Upon release, the operator returns to its original position, and the contacts revert to their normal state. It is typically used for applications requiring a brief signal, such as starting a motor, opening a valve, or initiating a sequence.

• Design & Construction:

• Operator: Flush head design, providing a low-profile and aesthetically pleasing appearance. The specific color (e.g., green for "Start", red for "Stop") is defined by the full catalog number, which "U29" is a part of.

• Mounting: Designed for standard 30.5mm panel mounting holes, providing a secure and stable installation.

• Heavy-Duty: Built for demanding industrial applications, offering high mechanical and electrical durability.

• Modular Design: Comprises three main components: the operator (front part), mounting adapter, and contact blocks (rear part). This modularity allows for flexible assembly and easy replacement of individual components.

• Contact Blocks: The "U29" suffix typically indicates a specific configuration of N.O. (Normally Open) and N.C. (Normally Closed) contacts. These contacts are robust, featuring bifurcated (self-wiping) action for reliable low-level current switching, and high-quality materials for power circuit applications.

Product Parameters

(Note: Specific parameters like contact block quantity/type are defined by the complete catalog number. The "U29" likely specifies a particular standard configuration. Always refer to the specific Allen-Bradley 800T/H catalog for precise details.)

• Series: Allen-Bradley 800T/H (Heavy Duty)

• Mounting Hole Diameter: 30.5 mm (1.20 in.)

• Operator Type: Non-illuminated, momentary, flush head.

• Contact Block Configuration (Typical for "U29" or similar): Could be 1 N.O. and 1 N.C., or other combinations depending on the exact full model number.

• AC: Typically up to 10 A continuous current at 600V AC.

• DC: Varies based on voltage, typically up to 2.5 A at 250V DC.

• Minimum Switching Current: Varies based on contact material, often suitable for logic-level signals (e.g., 5 mA at 5V DC with gold contacts).

• Contact Material: Silver alloy (standard), or gold-plated for low-current applications (optional, usually with different catalog suffix).

• Contact Ratings:

• Terminals: Standard screw terminals (others like pressure plate are available on different models).

• Mechanical Durability: Typically several million operations (e.g., 1,000,000 to 5,000,000 cycles).

• Electrical Durability: Varies based on load, typically 100,000 to 1,000,000 operations at rated load.

• Environmental Ratings:

• NEMA/UL Type Ratings: Typically available as Type 4/13, 3/3R, 4X (corrosion resistant) depending on operator type and enclosure. This implies suitability for indoor/outdoor use, dust-tight, and water-resistant.

• Operating Temperature: Typically -25 °C to +70 °C (-13 °F to +158 °F).

• Color: The exact color (e.g., green, red, black, yellow, blue, white) is determined by the specific full catalog number associated with the "U29" suffix.

Product Advantages

• Robustness and Durability: Built to withstand harsh industrial environments, including dust, dirt, moisture, and vibration, ensuring a long operational life.

• High Reliability: Proven design and quality manufacturing provide consistent and reliable operation, minimizing downtime.

• Modular Flexibility: The ability to combine various operators with different contact blocks and mounting adapters offers significant flexibility in configuration and simplified maintenance. Components can be replaced individually if needed.

• Global Recognition and Availability: Allen-Bradley is a globally recognized brand, ensuring wide availability of products, spare parts, and technical support.

• Ease of Installation: Designed for standard 30.5mm panel cutouts, simplifying integration into control panels. Screw terminals offer straightforward wiring.

• Aesthetic Appeal: The flush head design provides a modern and clean appearance on control panels.

• Safety Compliance: Meets various international safety and quality standards (e.g., UL, CSA, CE).

Precautions

• Correct Selection: Ensure the chosen push button (including color, operator type, and contact configuration) matches the specific application requirements and safety standards.

• Proper Installation:

• Ensure the 30.5mm panel cutout is accurate.

• Mount the push button securely to the panel.

• Ensure proper orientation if there are specific requirements for the operator.

• Tighten all terminal screws to the recommended torque to ensure secure electrical connections and prevent loose wiring.

• Electrical Safety:

• Always disconnect power before installing, wiring, or performing maintenance.

• Ensure proper grounding of the control panel and associated equipment.

• Verify contact ratings are sufficient for the intended load (both voltage and current).

• Environmental Considerations: While robust, ensure the specific NEMA/UL Type rating of the push button is appropriate for the environmental conditions (e.g., outdoor, washdown, dusty areas).

• Wiring Practices: Use appropriate wire gauges and insulation. Protect wiring from sharp edges and excessive heat.

• Maintenance: Periodically check for any signs of physical damage, loose connections, or excessive wear on the operator.

Product Applications

The Allen-Bradley 800T-U29 push button, like other members of the 800T/H family, is widely used across various industrial and commercial sectors.

• Manufacturing and Production Lines:

• Machine Start/Stop control.

• Conveyor system control.

• Process initiation/termination.

• Motor Control Centers (MCCs) and Control Panels:

• Local control of motors, pumps, and fans.

• Emergency stop functions (if configured with appropriate operator type and safety contacts).

• Industrial Machinery:

• Operator interfaces for presses, robotic cells, packaging machines, etc.

• Building Automation:

• Control of HVAC systems, lighting, and access control points.

• Oil & Gas and Chemical Industries:

• Control of pumps, valves, and other equipment in hazardous or demanding environments (ensure appropriate NEMA ratings).

• Water and Wastewater Treatment:

• Control of pumps, mixers, and filtration systems.

• Power Generation:

• Control and signaling within power plant auxiliary systems.

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