AB Allen Bradley 1492 series terminal block

AB Allen Bradley 1492 series terminal block

Overall Structure and Core Blocks

Main content of page numbers corresponding to core sections

The IEC Screw Type Terminal Blocks on pages 3-23 include various types such as single circuit mini terminal blocks, grounding terminal blocks, threading terminal blocks, etc., detailing parameters such as size, certification, voltage and current ratings, and wire range

Pages 24-41 of IEC Spring Clamp Type Terminal Blocks introduce terminal blocks with different installation methods such as mini installation and surface installation, emphasizing features such as fast wiring, maintenance free, and electrical performance parameters

Pages 42-64 of IEC Terminal Block Accessories cover installation rails, end shields, partitions, jumpers, plugs, and other accessories, indicating their applicable terminal block types, sizes, packaging quantities, and functions

NEMA Terminal Blocks pages 65-68 include tubular screw type, panel mounted, and other terminal blocks, specifying voltage and current levels, wire range, and insulation temperature range

NEMA Terminal Block Accessories pages 69-77 cover installation rails, stacking bridges, end anchors, marking systems, etc. Provide accessory specifications and compatibility information with the terminal block

Power Blocks pages 78-90 include open mini power terminal blocks, high fault short-circuit current rated terminal blocks, etc., with a focus on current capacity, wire connection methods, and short-circuit current tolerance

The additional resources section provides relevant reference documents (such as the "Industrial Automation Wiring and Grounding Guide") and product certification query websites to help users obtain more installation specifications and certification details; At the same time, explain the ways to view, download, and order paper versions of technical documents.

Core technical parameters and characteristics of various terminal blocks

（1） IEC screw type terminal block

Basic commonality

Certification system: It generally complies with international certification standards such as IEC, CSA, ATEX, and some models meet UL standards to ensure applicability in different regions and industries.

Temperature range: Most terminal blocks operate at -58...+248 ° F (-50...+120 ° C), while some mini terminal blocks operate at -40...+195 ° F (-40...+90 ° C), suitable for complex industrial temperature environments.

Wire Connection: Supports wires of different specifications (AWG or mm ²), specifying the wire stripping length (such as 0.39in, 0.47in, etc.) and recommended tightening torque (such as 4.5... 7.1lb · in) to ensure connection reliability.

Typical Model Example

1492-J series threading terminal block: 1492-J3 voltage rated 600V AC/DC, maximum current 25A, wire range # 28... 12AWG; 1492-J120 voltage 1000V AC/DC, maximum current 269A, wire range # 4... 4/0AWG, covering application scenarios from low current small wires to high current large wires.

1492-W series single circuit terminal block: 1492-W3 voltage 600V AC/DC, maximum current 20A, wire range # 30... 14AWG, suitable for small control circuits; 1492-W16S voltage 600V AC/DC, maximum current 85A, wire range # 14... 4AWG, meets medium to high current requirements.

Grounding terminal block (such as 1492-JG series): 1492-JG3 is only used for grounding, with wire range # 30... 12AWG. 1492-JG120 is used for grounding, with wire range # 4... 4/0AWG, to ensure circuit grounding safety.

（2） IEC spring clip type terminal block

Core strengths

Installation efficiency: wiring time is reduced by more than 50%, and only a flathead screwdriver is needed for installation, without the need for subsequent re tightening, reducing maintenance costs.

Reliability: Using tin plated terminals and stainless steel spring clips, corrosion-resistant and vibration resistant, ensuring long-term stable contact; Top wire connection design for easy operation.

Safety design: Most models support 2mm standard test probes or stacked test plugs, with insulation blocks to prevent the insulation layer from entering the conductive area when connecting small-sized wires.

Key parameters and models

Voltage and current: 1492-L3 voltage 600V AC/DC, maximum current 24A; 1492-L120 voltage 1000V AC/DC, maximum current 228A, suitable for different power requirements.

Special function model: 1492-LD4DF diode terminal block, rated reverse voltage of 600V, average rectified forward current of 1.0A, used for circuit orientation and suppression; 1492-LD4SS surge suppression terminal block, nominal operating voltage 120V, peak current 1200A, protects relays, contactors and other components from transient impacts.

（3） NEMA terminal block

Main types and specifications

Tubular screw type: such as 1492-CA1, voltage 600V AC/DC, maximum current 55A, wire range # 22... 8AWG, with pressure plate design to enhance wire fixation effect.

Panel installation type: 1492-HC6 is a high-density panel installation terminal block with a maximum current of 25A per pole and a wire range of # 30... 12AWG, saving panel space and suitable for dense wiring scenarios.

High temperature type: 1492-15T and 1492-25T work at temperatures up to -40...+300 ° F (-40...+149 ° C), suitable for high-temperature industrial environments (such as metallurgy and chemical industry), with a voltage of 600V AC/DC and currents of 35A and 45A, respectively.