PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1794-TB3 is a FLEX I/O terminal base unit designed for industrial automation systems. It provides modular mounting and signal termination for compatible FLEX I/O modules. The unit incorporates cage-clamp terminals that secure field wiring from 0.34 to 3.3 mm squared. An open-style enclosure allows direct integration onto standard DIN rails.
The unit supports FLEXBus backplane communication operating at 5V DC with a maximum current rating of 640 mA. Field power connections accommodate 125V AC or DC across 50/60 Hz frequencies with a 10 A capacity. The assembly provides 125V continuous isolation to maintain operational integrity in industrial operating environments.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Clamp Type | Cage-Clamp |
|---|
| Continuous Isolation Voltage | 125 Volts |
|---|
| DIN Rail Mounting | Supported |
|---|
| Enclosure | None (Open-Style) |
|---|
| FLEXBus Voltage and Current | 5V DC and 640 mA |
|---|
| GTIN | 10662468112359 |
|---|
| Operating Temperature | -20 to 70 degrees Celsius |
|---|
| Product Line | Flex I/O 1794 |
|---|
| Storage Temperature | -40 to 85 degrees Celsius |
|---|
| Terminal Screw Torque | 0.56 to 0.79 Nm |
|---|
| UPC | 662468112352 |
|---|
| V/COM Terminal Current | 10 Amps |
|---|
| V/COM Terminal Frequency | 50/60 Hertz |
|---|
| V/COM Terminal Supply Voltage | 125V AC/DC |
|---|
| Weight | 0.63 lbs (0.28 kg) |
|---|
TECHNICAL INFORMATION
Features
- Cage-clamp wire termination mechanism provides secure conductor retention.
- Integrated FLEXBus backplane connection supports 5V DC at 640 mA.
- V/COM field power distribution terminals support up to 10 A current capacity.
- Continuous isolation rating of 125 Volts between field wiring and internal logic.
- Direct mounting support for standard industrial DIN rail systems.
- Operating temperature range spans from -20 to 70 degrees Celsius.
TECHNICAL INFORMATION
Applications
- Field wiring distribution for Allen-Bradley FLEX I/O distributed systems.
- Industrial control cabinets requiring compact DIN rail terminal assemblies.
- Process automation racks using combined 24V or 120V AC/DC field signals.
TECHNICAL INFORMATION
Connections / Interfaces
- Cage-clamp screw terminals support wire sizes between 0.34 and 3.3 mm squared.
- Terminal screws require a fastening torque between 0.56 and 0.79 Nm.
- FLEXBus edge connector transfers logic power and control signals at 5V DC.
- Power distribution terminals handle V and COM field connections up to 10 A.
TECHNICAL INFORMATION
Installation Guidelines
- Snap the terminal base unit securely onto an approved DIN rail.
- Tighten all terminal clamp screws to a torque between 0.56 and 0.79 Nm.
- Ensure wire sizes remain within the specified 0.34 to 3.3 mm squared range.
- Maintain ambient operating temperatures between -20 and 70 degrees Celsius inside the enclosure.
TECHNICAL INFORMATION
Compatibility
- Interconnects directly with Allen-Bradley FLEX I/O 1794 series hardware modules.
- Mounts on standard industrial DIN rail channels alongside adjacent terminal bases.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSInterconnects directly with Allen-Bradley FLEX I/O 1794 series hardware modules. Mounts on standard industrial DIN rail channels alongside adjacent terminal bases.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What wire sizes are compatible with the 1794-TB3 terminal base?
The cage-clamp terminals accommodate wire sizes ranging from 0.34 to 3.3 mm squared.
What is the recommended screw torque for wiring terminals on the 1794-TB3?
Tighten the terminal clamp screws to a torque specification between 0.56 and 0.79 Nm.
What are the electrical ratings for the 1794-TB3 V/COM terminals?
The V/COM terminals handle up to 125V AC/DC at 50/60 Hz with a 10 A current capacity.
What is the reference price for an Allen-Bradley 1794-TB3 unit?
Market observations show reference pricing around $29.00 USD. This figure is an indicative market reference only and not a final quotation.
