Abb 545311/23/4 Terminal Block Screw Clamp 1/2 3/4

Product Description

The ABB 545311/23/4 is a screw-clamp terminal block designed for secure, low-resistance wire termination in electrical panel and control enclosure applications. This type of terminal block provides a reliable mechanical connection point for branch circuit wiring and control wiring alike. It accommodates multiple conductor sizes, making it a practical choice for both new panel builds and retrofit work. Licensed electricians and panel builders are the primary installers of this component, which is intended for use in properly rated enclosures per applicable NEC requirements.

This terminal block is suited for use in residential and light commercial electrical distribution panels, control cabinets, and industrial enclosures. The screw-clamp design provides consistent clamping force on conductors without requiring specialized tooling, making it a dependable choice for high-cycle environments where vibration resistance and connection integrity matter.

Key Features

• Screw-clamp termination provides secure, vibration-resistant conductor connections
• Compatible with 1/2 inch and 3/4 inch mounting configurations
• Compact form factor suitable for high-density panel layouts
• Designed for use in enclosed electrical distribution and control wiring applications

Compatibility

Designed as an OEM-style replacement or new-installation terminal block for standard electrical enclosures and control panels accepting screw-clamp style terminal block components.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NEC guidelines. De-energize and lock out the panel or enclosure before installing or replacing terminal blocks. Verify that conductor size and insulation rating are appropriate for the circuit before terminating. Do not overtighten the screw clamp, as excess torque can damage conductor strands and reduce connection integrity.

Technical Specifications

• Mounting Configuration: 1/2 and 3/4 inch
• Termination Type: Screw Clamp
• Package Dimensions (L x W x H): 21.6 inches x 11.5 inches x 5.5 inches
• Weight: 0.53 pounds
• UPC: 78599117405

Standard Information

• Brand: ABB
• Manufacturer Part Number: 545311/23/4