- Low-profile 20-position removable terminal block for compatible ControlLogix I/O modules
- NEMA screw-clamp terminals for one or two qualified copper conductors
- Agency-certified ControlLogix field-wiring option when used as documented
1756-TBNH is an Allen-Bradley low-profile removable terminal block that provides 20 screw-clamp field connections for compatible ControlLogix I/O modules.
The RTB is mechanically keyed to the installed module and supports the documented single- or double-conductor arrangements without changing the module-side electronics.
Before installation, match the I/O module and RTB option, reproduce the keying, prepare each copper conductor correctly, and verify torque, wiring, seating, and enclosure clearance.
Availability, condition, price, and shipping time for 1756-TBNH are confirmed during quotation.
Allen-Bradley 1756-TBNH Removable Terminal Block Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Single-conductor terminals accept the documented 22–14 AWG range
- Two-conductor terminals use the documented 22–16 AWG range
- Copper conductors must be rated 105 °C or higher
- The RTB must be listed for the exact ControlLogix I/O module
- Mechanical keying prevents an incorrectly wired block from being moved to another module
- Low-profile housing clearance must be checked against the installed enclosure and wire duct
- Tighten 1756-TBNH terminal screws to 1.36 N·m (12 lb·in)
- Use copper conductors rated 105 °C or higher and keep insulation within the published 1.2 mm maximum
- Confirm RTB seating, latch engagement, mechanical keying and wiring against the matched ControlLogix I/O module diagram
- Field wiring termination for compatible ControlLogix digital input modules
- Field wiring termination for compatible ControlLogix digital output modules
- Field wiring termination for compatible ControlLogix analog and specialty I/O modules