Product Details
Product Overview
The Allen-Bradley 1797-TB3 is a specialized terminal base unit engineered for the FLEX Ex I/O system, facilitating secure connections in hazardous locations. This unit serves as the physical and electrical interface between the I/O modules and the field wiring, supporting the modularity and hot-swap capabilities inherent to the FLEX platform.
Designed for high-density applications, the 1797-TB3 provides 52 separate connection points, allowing for complex sensor and actuator integration while maintaining intrinsic safety standards. Its rugged construction ensures reliable operation in demanding environments such as petrochemical plants and refineries where volatile atmospheres are present.
Technical Characteristics
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Manufacturer: Allen-Bradley / Rockwell Automation
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Product Series: FLEX Ex 1797
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Component Type: Terminal Base Unit
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Total Terminals: 52 (1 row of 16 and 2 rows of 18)
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Mounting Configuration: Horizontal or Vertical DIN Rail
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Terminal Screw Torque: 0.8 to 1.0 N-m (7 to 9 lb-in)
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Flexbus Rating: 10V DC maximum
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Isolation Voltage: Dependent on the specific I/O module inserted
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Operating Temperature: -20°C to 70°C (-4°F to 158°F)
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Storage Temperature: -40°C to 85°C (-40°F to 185°F)
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Relative Humidity: 5% to 95% non-condensing
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Shock Resistance: 15 G operational (11 ms pulse)
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Vibration Resistance: 2 G at 10 to 500 Hz
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Approximate Weight: 1.36 kg (3.00 lbs)
Professional Application
The 1797-TB3 is essential for building an intrinsically safe I/O architecture. It acts as the backbone for 1797 series modules, providing a stable platform for signal distribution and power routing via the internal Flexbus. By utilizing this terminal base, engineers can achieve significant space savings within control cabinets while ensuring that field-side wiring is managed efficiently. The unit’s high terminal density supports multi-wire sensors and complex loops, making it a versatile choice for hazardous area signal management.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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Industrial automation has evolved from a simple manufacturing tool into the operational backbone of high-risk sectors. Modern mining operations increasingly rely on advanced control systems, programmable logic controllers (PLCs), distributed control systems (DCS), and artificial intelligence to address deep-underground hazards. By replacing manual labor in high-risk zones, factory automation technologies protect personnel while significantly boosting operational throughput.
Step-by-Step System Cabinet Health Check Guide for PLC and DCS Infrastructure
