Catalogs > Industrial Controls Catalog > Terminal Blocks and Wiring Systems > Terminal Blocks, IEC > Screw Connection Terminal Blocks
Screw Connection Terminal Blocks
| Introduction |  |
Mini-Blocks | |
Standard Feed-Through Blocks | |
High Current Blocks | |
Space-Saver Feed-Through Blocks | |
Multi-Circuit Feed-Through Blocks | |
Specialty Feed-Through Blocks | |
| Stab-Connect Feed-Through Blocks | |
Sensor Blocks | |
Grounding Blocks | |
Space-Saver Grounding Blocks | |
Isolation Blocks | |
Plug-in Style Terminal Blocks | |
Double Level Plug-in Style Blocks with Ground | |
Allen-Bradley screw terminal blocks generally have been designed to meet the requirements of one or more regulatory bodies. Most products have also been tested per additional standards. The following is a listing of some of the regulatory bodies and standards which apply to Allen-Bradley screw terminal block products. See the particular product description for information on specific certifications and ratings.
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(Underwriters Laboratories) — Devices in this catalog with one of these ratings have been tested by Underwriters Laboratories and meet the requirements of one or more of the following United States Standards:
Reference UL files E34648, E40735, E160646
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(Underwriters Laboratories) — Devices in this catalog with this rating have been tested by Underwriters Laboratories and meet the requirements of the following Canadian Standard:
Reference UL file E40735
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(Canadian Standards Association) — Devices in this catalog with this rating have been tested by the Canadian Standards Association and meet the requirements of the following Canadian Standard:
Reference CSA files LR67896
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Terminal blocks listed in this catalog meet the requirements of the Low Voltage Directive put forth by the European Union. Devices have been tested and comply with one or more of the following European Norms:
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ATEX — Devices listed in this catalog with “ATEX” ratings meet the following European Norms per DEMKO or KEMA, Approval Certification Bodies for the European Union:
Contact your local Rockwell Automation sales office or Allen-Bradley distributor for a copy of the certificate.
Ex e II — Many 1492-J, 1492-K, 1492-L, and 1492-W terminal blocks in this catalog meet the following Canadian Standards per Underwriters Laboratories:
These products are suitable for Class I, Zone 1 Hazardous Locations. Reference UL file E187022. Contact your local Allen-Bradley distributor for more information.
AEx e II — Devices listed in this catalog with an “AEx e II” rating meet the following United States Standard per Underwriters Laboratories:
These products are suitable for Class I, Zone 1 Hazardous Locations. Reference UL file E187022. Contact your local Rockwell Automation sales office or Allen-Bradley distributor for more information.
Lloyd’s Register — Many 1492-H, 1492-J, 1492-L, and 1492-W terminal blocks in this catalog have been certified for use in marine, off-shore, and industrial installations per the following standard:
Contact your local Rockwell Automation sales office or Allen-Bradley distributor for a copy of the certificate.
Materials and Design Features (Bulletin 1492-J and 1492-W)
Bulletin 1492 Screw Terminal Block line is designed for safety, installation ease, and ruggedness. Features using these design criteria include:
- High copper content alloy for excellent conductivity
- Tin-plated terminals and zinc chromate steel screws for corrosion resistance (1492-W terminal blocks have nickel-plated terminals and stainless steel screws)
- Four-sided wire funnel guides for easy insertion
- Finger-safe housings to prevent accidental contact with live circuits
- International certifications for worldwide use
- DIN Rail (Cat. No. 199-DR1) mountability, allowing terminal blocks to be placed on the same channel as contactors, starters, relays, and other DIN Rail-mounted control devices
- Self-extinguishing, polyamide 6.6 housing with UL 94 V0 flammability rating (1492-W terminal blocks have UL 94 V2 flammability rating)
- Backed out screws for fast wiring
- CE Mark for use in the European Union
The Allen-Bradley IEC Terminal Block Line…
International Products for a Worldwide Marketplace
The Allen-Bradley Bulletin 1492-J line of internationally approved IEC style terminal blocks offers a wide range of features and benefits ideally suited for many industrial applications. The 1492-J line has been designed to meet the tough requirements of almost every industrial application. Functional, internationally approved, finger-safe, and cost-effective — the Allen-Bradley Bulletin 1492-J line.
Products Available in the Bulletin 1492 Screw Terminal Block Line
Our family of IEC terminal blocks consists of many different types of blocks, from general feed-through terminal blocks for control wiring to specialty blocks for grounding and isolating. We even offer thermocouple terminal blocks, specifically designed for temperature-dependent process control applications.
Products offered within the Bulletin 1492 Screw Terminal Block line include:
- Feed-Through Blocks, capable of accommodating #30…2/0 AWG (0.2…70 mm2) wire
- Grounding Blocks for grounding a given circuit to the DIN Rail
- Mini Blocks for applications where panel space is at a premium
- Two-Level Blocks that double circuit wiring density
- Multi-Conductor Blocks that allow splitting or joining of control circuits
- Three-Level Sensor Blocks for coordination of three-wire sensor groups
- Isolation Blocks for circuit isolation during testing and troubleshooting
- Fuse Blocks, with and without blown fuse indication, for easily integrated overcurrent protection
- Electrical Component Blocks that allow the insertion of fixed components into control circuits. Available components include resistors, diodes, surge suppression circuits, and shunt bars.
Tie-Point Block
(Cat. No. 1492-JD3C)
Incorporates a shunt bar between the upper and lower current bars to provide a common point among all four terminals.
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Diode Block
(Cat. Nos. 1492-JD3DF, 1492-JD3DR)
Uses a 1N4007 diode between the upper and lower levels for insertion into a control circuit. This block is useful in low voltage DC control circuits for directioning and suppression.
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Surge Suppression Block
(Cat. Nos. 1492-JD3SS)
Provides a convenient means of incorporating transient suppression for relays, contactors, and solenoids into a control system.
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Resistor Block
(Cat. No. 1492-JD3RC001)
Permits the introduction of a 249 W resistor into a control circuit.
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- Return Blocks that have both terminations on the same side of the terminal block allowing the rail to be mounted next to the wall of an enclosure
- Plug-In Style Blocks that allow the insertion of removable plugs into control circuits. Available plugs include a Disconnect Plug, a Fuse Plug, and a Component Plug which will accommodate various electrical components
- Thermocouple Terminal Blocks (Types B, E, J, K, N, S, T) for temperature control applications
- A wide variety of Snap-In Markers for individual or group circuit identification
- Multi-pole insulated Center Jumpers which provide a convenient method of commoning control circuits
Materials and Design Features
The Bulletin 1492-J line is designed for safety, installation ease, and ruggedness. Features using these design criteria include the following:
- Tin-plated terminals and steel screws for corrosion resistance (Bulletin 1492-W terminal blocks have nickel-plated terminals and stainless steel screws)
- High copper content copper alloy for excellent conductivity
- Four-sided wire funnel guides for easy wire insertion
- Finger-safe housings to prevent accidental contact with live circuits
- International approvals for worldwide use
- DIN Rail (Cat. No. 199-DR1) mountability, allowing terminal blocks to be placed on the same channel as contactors, starters, relays, and other DIN Rail-mounted control devices
- Self-extinguishing, polyamide 6.6 housing material with UL 94-V0 flammability rating (Bulletin 1492-W terminal blocks have UL 94-V2 flammability rating)
- Backed out screws for fast wiring