Allen-Bradley spring-clamp 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 spring-clamp terminal block products. See the particular product description for information on specific certifications and ratings.

(Underwriters Laboratories) — Allen-Bradley spring-clamp terminal blocks 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:

UL 486E — Equipment Wiring Terminals for Use with Aluminum and/or Copper Conductors

UL 1059 — Standard for Terminal Blocks

Reference UL files E34648, E40735, E160646

(Underwriters Laboratories) — Allen-Bradley spring-clamp terminal blocks with this rating have been tested by Underwriters Laboratories and meet the requirements of one or more of the following Canadian Standards:

CSA 22.2 No. 158 — Terminal Blocks

Reference UL file E40735

(Canadian Standards Association) — Allen-Bradley spring-clamp terminal blocks with this rating have been tested by the Canadian Standards Association and meet the requirements of the following Canadian Standard:

CSA 22.2 No. 158 — Terminal Blocks

Reference CSA files 677896

Allen-Bradley spring-clamp 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:

EN 60947-1 — Low Voltage Switchgear and Controlgear: General Rules

EN 60947-7-1 — Low Voltage Switchgear and Controlgear: Terminal Blocks for Copper Conductors

EN 60947-7-2 — Low Voltage Switchgear and Controlgear: Protective Conductor Terminal Blocks for Copper Conductors

EN 60947-7-3 — Low Voltage Switchgear and Controlgear: Safety Requirements for Fuse Terminal Blocks

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:

EN 50014 — Electrical Apparatus for Potentially Explosive Atmospheres — General Requirements

EN 50019 — Electrical Apparatus for Potentially Explosive Atmospheres — Increased Safety “e”

Contact your local Allen-Bradley distributor for a copy of the certificate.

Ex e II — Bulletin 1492-L terminal blocks in this catalog meet the following Canadian Standards per Underwriters Laboratories:

E79-0-95 — Electrical Apparatus for Explosive Atmospheres — Part 0 — General Requirements

E79-7-95 — Electrical Apparatus for Explosive Atmospheres — Part 7 — Increased Safety “e”

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 — Allen-Bradley spring-clamp terminal blocks with an “AEx e II” rating meet the following United States Standard per Underwriters Laboratories:

UL 2279 — Standard for Electrical Equipment for Use in Class I, Zone 0, 1, and 2 Hazardous (Classified) Locations

These products are suitable for Class I, Zone 1 Hazardous Locations. Reference UL file E187022. Contact your local Allen-Bradley distributor for more information.

Lloyd’s Register — Bulletin 1492-L terminal blocks in this catalog have been certified for use in marine, off-shore, and industrial installations per the following standard:

Lloyd’s Register Test Specification No. 1:1996

Contact your local Allen-Bradley distributor for a copy of the certificate.

The Allen-Bradley Line of Spring-Clamp Terminal Blocks…

The Bulletin 1492-L line of internationally approved spring-clamp IEC-style terminal blocks offers a variety of products that can make any application:

Fast — Reduces wiring time by more than 50%
Practical — Requires only a flat-head screwdriver for easy installation. Maintenance-free, no need to retighten
Reliable — Secure contact is durable under extreme conditions such as high-vibration applications

Products Available in the 1492-L Spring-Clamp Line

Feed-Through Blocks, accommodating wire sizes from #30…#2 AWG (0.2…35 mm²)
Grounding Blocks for grounding a given circuit to the DIN Rail
Multi-Circuit Blocks for doubling circuit wiring density
Isolation Blocks for circuit isolation during testing and troubleshooting
Plug-In Style Terminal Blocks accommodating component plugs, fuse plugs, and disconnect plugs
Sensor Blocks for coordination of three-wire sensor groups with or without ground terminations
Electrical Component Blocks which allow for the insertion of fixed components into control circuits. Components include diodes and surge suppression circuits

Tie-Point Block
(Cat. Nos. 1492-LD2C, LD3C, LD4C)

Diode Block
(Cat. Nos. 1492-LD4DF, 1492-LD4DR)

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.

Cat. No. 1492-LD4DF

Cat. No. 1492-LD4DR

Surge Suppression Block
(Cat. No. 1492-LD4SS)

Provides a convenient means of incorporating transient suppression for relays, contactors and solenoids into a control system.

Test Blocks for allowing a bank of pluggable terminal strips to be easily connected for test purposes
A wide variety of snap-in markers are available for individual or group circuit identification
A broad offering of accessories such as screwless end retainers, electrical warning plates, end barriers, protective stops and test plugs to provide exactly what the application requires
Operating instructions (printed on an adhesive label), for fixing inside a panel
Mini-blocks available in rail-mount or panel-mount configurations

Materials and Design Features

The 1492-L line is specially designed for safety, installation ease, and ruggedness. Features include:

Tin-plated terminals and stainless steel spring clamps for resistance to corrosion and vibration
Spring clamp design to minimize stress relaxation and maintain contact force, even under vibration
Top wire entry for ease of installation
Circuit testing with standard 2 mm diameter test probe or stackable test plugs on most spring-clamp blocks
Insulation stops to ensure electrical connection when using smaller gauge wires
Markers that are visible after terminal blocks are wired
Multiple marking options
Common profiles to minimize stocking of accessories
Self-extinguishing, polymide 6.6 housing materials with a flammability rating UL 94-V0 (1492-R terminal blocks have a UL 94-V2 flammability rating)
Screwless center jumpers to simplify jumpering terminals together

Note: To ensure proper wire termination, these blocks are designed to accept only one wire per terminal.