Allen-Bradley 1794-TB3 Terminal Base,Flex I/O,16 I/O Terminals,18 Common Terminals,
$59.99
Out of stock
Request QuoteAllen-Bradley 1794-TB3 — The 1794-TB3 is an Allen-Bradley FLEX I/O Cage-clamp Terminal Base Unit rated 10 A (V/COM terminals 125V DC/AC, 50/60 Hz) with 16 input/output terminals, compatible with FLEXBUS backplane systems, operating -20…70 °C, certified UL/CSA for industrial control.
| Catalog Number | 1794-TB3 |
| Terminal Type | Cage-clamp |
| V/COM Terminals Rating | 125V DC/AC, 50/60 Hz, 10 A |
| I/O Terminals Current | 2 A max |
| Operating Temperature | -20…70 °C (-4…158 °F) |
| Wire Size | 0.21…1.3 mm² (24…16 AWG) stranded copper wire |
Description
Allen-Bradley 1794-TB3
The 1794-TB3 is an Allen-Bradley FLEX I/O Cage-clamp Terminal Base Unit rated 10 A (V/COM terminals 125V DC/AC, 50/60 Hz) with 16 input/output terminals, compatible with FLEXBUS backplane systems, operating -20…70 °C, certified UL/CSA for industrial control.
| Product Overview | |
|---|---|
| Catalog Number | 1794-TB3 |
| Product Type | FLEX I/O Cage-clamp Terminal Base Unit |
| Backplane Interface | FLEXBUS (5V DC, 640 mA) |
| Terminal Configuration | 16 input/output terminals with commons, power connections |
| Terminals 35 to 50 | Not available on 1794-TB2 |
| Electrical Specifications | |
|---|---|
| V/COM Terminals Voltage Rating | 125V DC/AC, 50/60 Hz |
| V/COM Terminals Current | 10 A |
| I/O Terminals Current | 2 A max |
| FLEXBUS Supply Voltage | 5V DC, 640 mA |
| Isolation Voltage | 125V (continuous) maximum, Basic Insulation Type, Field Wiring Terminals to FLEXBUS, or the lesser of the installed module |
| dV/dt Rating | 2500V DC/sec, Field Wiring Terminals to FLEXBUS |
| Wiring and Installation | |
|---|---|
| Wire Size | 0.21…1.3 mm² (24…16 AWG) stranded copper wire rated at 75 °C (167 °F) or greater |
| Wire Insulation Maximum | 1.2 mm (3/64 in.) |
| Strip Length | 5-6 mm (0.20…0.24 in.) |
| Terminal Screw Torque | 0.56…0.79 Nm (5…7 lb-in) |
| DIN Rail Specification | 35 x 7.5 DIN rail (A-B pt no. 199-DR1), zinc plated yellow-chromate steel |
| DIN Rail Spacing | Secure approximately every 200 mm (7.8 in.) |
| Environmental and Operating Conditions | |
|---|---|
| Operating Temperature | -20…70 °C (-4…158 °F) |
| Non-operating Temperature | -40…85 °C (-40…185 °F) |
| Relative Humidity | 5…95% noncondensing |
| Vibration (Operating) | 5 g @ 10…500 Hz per IEC 60068-2-6 (Test Fc) |
| Operating Shock | 30 g per IEC 60068-2-27 (Test Ea) |
| Non-operating Shock | 50 g per IEC 60068-2-27 (Test Ea) |
| Pollution Degree | 2 industrial environment |
| Overvoltage Category | Category II per IEC 60664-1 |
| Altitude | Up to 2000 m (6562 ft) without derating |
| Physical Specifications | |
|---|---|
| Dimensions (approximate with module installed) | 94 x 94 x 69 mm (3.7 x 3.7 x 2.7 in.) (H x W x D) |
| Mounting Holes for Panel Mounting | Yes |
| Keyswitch | Set to position required for installed module |
| Module Locking Latch | Yes |
| Cover Plug | Included for male flexbus connector |
| Certifications and Compliance | |
|---|---|
| UL Certification | UL Listed Industrial Control Equipment, certified for US and Canada per UL File E65584 |
| CSA Certification | CSA Certified Process Control Equipment per CSA File LR54689C |
| CE Marking | European Union 2004/108/EC EMC Directive, 2006/95/EC LVD compliant (EN 61326-1, EN 61000-6-2, EN 61000-6-4, EN 61131-2) |
| North American Hazardous Location | Class I, Division 2 Group A,B,C,D (with K designation for conformally coated models per ISA/ANSI-71.040 Class G3) |
| North American Temperature Code | T4A |
| IEC Temperature Code | T4 |
| C-Tick (Australia) | AS/NZS CISPR 11 Industrial Emissions compliant |
| TÜV Certification | TÜV Certified for Functional Safety, Capable of SIL 2 |
| Safety and Handling | |
|---|---|
| Electrostatic Discharge Protection | Equipment sensitive to ESD; use grounded wriststrap, touch grounded objects, avoid touching connectors or circuit components |
| Power Removal Requirement | Remove backplane power before inserting/removing module to prevent electrical arc in hazardous locations |
| Field-side Power Disconnection | Disconnect field-side power before connecting/disconnecting wiring to prevent electrical arc |
| Grounding Requirement | Grounded through DIN rail to chassis ground; use zinc plated yellow-chromate steel DIN rail |
| Terminal Wiring | Do not wire more than 1 conductor on any single terminal |
| Enclosure Type | Open-type; must be mounted in suitably designed enclosure with flame-retardant properties (rating 5VA, V2, V1, V0 or equivalent if non-metallic) |
| Wiring Connection Summary | |
|---|---|
| Common Connection (-V) | Terminals B-16 and B-33 |
| Voltage Input (+V) | Terminals C-34 and C-51 |
| Daisy-chain Supply In | C-34 (+) and B-16 (-) |
| Daisy-chain Supply Out | C-51 (+) and B-33 (-) |
| Input/Output Terminals | Terminals 0-15 (16 total) |
Disclaimer: PLC Exchange is an independent reseller and is not an authorized distributor, affiliate, licensee, partner, or agent of Allen-Bradley / Rockwell Automation. All product information on this page is compiled from publicly-available manufacturer publications, technical data sheets, and catalog sources, each of which remains the copyright of its originating manufacturer. We make no representation or warranty, express or implied, regarding the accuracy, completeness, timeliness, or fitness for any particular purpose of the specifications or descriptions shown — content may contain errors, omissions, or out-of-date information. Product images are the property of their respective manufacturers, trademark owners, and source publications, and are displayed solely for identification purposes under the nominative fair use doctrine; images are representative and may depict a different configuration or catalog variant than the exact product listed. Purchasers should independently verify specifications against the current manufacturer publication before placing an order. All product names, trademarks, service marks, and registered trademarks are the property of their respective owners, and their use does not imply endorsement or affiliation.
Technical Notes for 1794-TB3
- Refer to the manufacturer's installation instructions for proper mounting, wiring, and configuration.
- Ensure compatibility with your existing system architecture before ordering.
- All 1794-TB3 units sold by PLC Exchange are tested and ship in original factory packaging.
- For application-specific questions or system compatibility verification, contact PLC Exchange technical support at [email protected] or 980-202-0882.
Alternative Part Numbers & Names for 1794-TB3
The 1794-TB3 by Allen-Bradley may also be found under the following alternative names, catalog numbers, or common search variations:
- 1794TB3
- Allen Bradley 1794-TB3
- Allen-Bradley 1794-TB3
- 1794 TB3
- 1794/TB3
All variations refer to the same Allen-Bradley product. If you are unsure whether this is the correct part for your application, contact our team for assistance.
Additional information
| Weight | 0.5 lbs |
|---|---|
| Dimensions | 3.7 × 3.7 × 2.7 in |
| warranty | 2.5 Year PLC Exchange Warranty, 30 Days worry-free return from delivery |
| upc | 662468112352 |
| mpn | 1794-TB3 |
| manufacturer | Allen-Bradley |
| condition | Original Packaging |
Dimensions & Weight for 1794-TB3
| Shipping Dimensions | |
|---|---|
| Weight | 0.5 lbs |
| Length | 3.7 in |
| Width | 3.7 in |
| Height | 2.7 in |
| Box Dimensions (L×W×H) | 3.7 × 3.7 × 2.7 in |
Dimensions shown are for the shipping package. For module-level mechanical dimensions, refer to the manufacturer datasheet.
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Frequently Asked Questions
Does the 1794-TB3 include a warranty?
Yes. Every 1794-TB3 sold by PLC Exchange includes a 2.5-year warranty (30 months, full replacement). Details: https://plcexchange.net/warranty-information/
What is the return policy for the 1794-TB3?
PLC Exchange offers a 30-day worry-free return policy. Eligibility and details: https://plcexchange.net/return-policy/
When will my 1794-TB3 ship?
In-stock orders placed before 4 PM ET ship the same business day via free UPS Ground. Expedited options (Next Day Air, 2nd Day Air) are available at checkout.
Who manufactures the 1794-TB3?
The 1794-TB3 is manufactured by Allen-Bradley. PLC Exchange is an independent reseller specializing in Allen-Bradley industrial automation products.
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