Allen-Bradley 1794-TB2 Flex I/O Terminal Base Unit – Cage Clamp

1794‑TB2 Flex I/O Terminal Base Unit

Allen‑Bradley 1794‑TB2 is a cage‑clamp terminal base for Flex I/O 1794 series. Supports panel or DIN‑rail mounting. UL listed, CSA certified. Rated 125V AC/DC, 10A. Accepts 24‑16 AWG stranded copper wire.

Technical Specifications

• Brand: Allen‑Bradley
• Model: 1794‑TB2
• Series: Flex I/O 1794
• Type: Terminal Base Unit (cage clamp)
• Voltage Rating: 24/120V DC/AC, max 125V
• Current Capacity: 10A max
• Isolation Voltage: 125V continuous (channel‑to‑channel depends on module)
• Wire Size: 0.21‑1.3 mm² (24‑16 AWG)
• Screw Torque: 0.56‑0.79 Nm (5‑7 lb‑in)
• Dimensions: 3.7 x 2.7 x 3.7 inches
• Weight: 0.50 lbs (0.23 kg)

Mechanical & Environmental

• Mounting: Panel or DIN rail (35mm).
• Operating Temp: 0…55 °C ; storage ‑40…85 °C.
• Vibration: 5 g @ 10‑500 Hz.
• Shock: 30 g operating, 50 g non‑operating.
• Enclosure: Open‑type.

Connectors & Components

• Female & male Flexbus connectors with cover plug.
• Key switch for module identification.
• I/O terminal strips (16 + 18 + 2 terminals).
• Locking tab and module locking latch.
• Panel mounting holes included.

Compatible Devices

• All Flex I/O 1794 analog/digital I/O modules.
• Works with PLC‑5, SLC 500, ControlLogix via Flex adapter.
• Accepts 24‑16 AWG stranded copper wire (category 2).

Oiltech Controls’s Insight

• 1794‑TB2 is the most versatile base unit for Flex I/O – supports both AC/DC.
• Cage‑clamp termination reduces wiring time vs. screw terminals.
• DIN‑rail compatible for quick panel integration.
• Channel‑to‑channel isolation is module‑dependent – check your I/O specs.

Frequently Asked Questions (FAQ)

Q1: Can I use this base with 230V AC signals?
A: No – max rating is 125V AC/DC. For higher voltage, use 1794‑TB3.

Q2: What is the Flexbus cover plug for?
A: Protects the male connector when not in use – prevents dust and accidental contact.

Q3: How do I set the key switch?
A: Rotate to match the I/O module keying position – ensures correct module insertion.

Q4: Is this base compatible with 1794‑IB16?
A: Yes – all 1794 digital/analog modules fit this base. Check keying.

Q5: What torque for the terminal screws?
A: 0.56‑0.79 Nm (5‑7 lb‑in). Over‑torque may damage the clamp.

Why Buy From Oiltech Controls?

• 15+ years in industrial automation spares.
• Global shipping via FedEx, UPS, DHL (24‑28 hour dispatch).
• Tested surplus & refurbished options available.
• 12‑month warranty on all units.
• Every unit receives technical verification before shipment.
• Expert support for obsolete control systems.

Contact: info@oiltechcontrols.com | +86 158 8020 0923 (WhatsApp)

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