140G-G6C3-C15 Allen-Bradley Molded Case Circuit Breaker

Model: 140G-G6C3-C15

Brand: Allen-Bradley

Product Family: Bulletin 140G

Product Type: Molded Case Circuit Breaker (MCCB)

UPC: 885630446288

Frame Size: G Frame

Frame Rating: 125 A

Rated Current: 15 A

Number of Poles: 3

Trip Unit: Thermal-Magnetic

Adjustment Type: Fixed Thermal / Fixed Magnetic

Interrupting Rating: 65 kA at 480 V AC

Additional Interrupting Rating: 70 kA at 415 V AC

Rated Voltage: 600Y/347 V AC

Mounting: Panel Mounting

Assembly: Factory Assembled

Terminal Accessories: Line and load end cap kits included; lugs ordered separately

Product Status: Active

Product Introduction

 

The Allen-Bradley 140G-G6C3-C15 is a three-pole molded case circuit breaker from the Bulletin 140G family. It combines a 15 A rated current with a fixed thermal-magnetic trip mechanism, providing overload and short-circuit protection for compatible electrical distribution circuits.

 

This model uses a G-frame construction with a 125 A frame rating. The frame designation describes the breaker frame size, not its actual rated current. Its specified operating current is 15 A, an important distinction when comparing this model with other 140G breakers.

 

The G6 interrupting code identifies a high-interrupting-capacity version, with a published rating of 65 kA at 480 V AC. The thermal-magnetic protection arrangement uses fixed trip characteristics rather than an adjustable electronic trip unit.

• Overload Protection: The thermal trip element responds to sustained overcurrent conditions that may cause excessive heating in connected conductors and equipment.
• Short-Circuit Interruption: The magnetic trip mechanism responds to high fault currents, allowing the breaker to interrupt the circuit within its specified breaking capacity.
• Three-Pole Circuit Switching: Provides coordinated switching and protection across three phases of a compatible electrical circuit.
• Fixed Thermal-Magnetic Protection: Uses factory-defined thermal and magnetic trip characteristics, avoiding the need for electronic trip-unit configuration.
• High Fault-Current Capability: The G6 version provides a 65 kA interrupting rating at 480 V AC, subject to the applicable system conditions and standards.
• Panel Integration: The molded-case construction is designed for installation in electrical distribution and industrial control assemblies.

The 140G-G6C3-C15 is suitable for three-phase electrical distribution circuits where a 15 A molded case breaker with a high interrupting rating is required.

• Industrial Distribution Panels: Branch-circuit protection in manufacturing and processing facilities.
• Control Panel Power Circuits: Protection of compatible three-phase power feeds within industrial control assemblies.
• Machinery Electrical Systems: Circuit protection for appropriately rated machine power circuits.
• Commercial and Industrial Switchboards: Installation in distribution assemblies designed around the Bulletin 140G breaker platform.
• Electrical Equipment Maintenance: Replacement of an existing 140G-G6C3-C15 where the current rating, frame, trip characteristics and interrupting capacity match the original installation.

The final application must be checked against the actual load current, available fault current, system voltage and applicable coordination requirements. A 15 A rating alone does not establish suitability for every three-phase load.

The model code contains several useful identification details:

When searching for this breaker, use the complete catalogue number 140G-G6C3-C15 rather than only 140G or G6. Other breakers within the same family may have different current ratings, pole configurations, trip characteristics and accessories.

Rockwell Automation's product cut sheet specifies that line and load end-cap kits are included with this factory-assembled breaker. Connection lugs, when required, must be ordered separately.

Before selecting a replacement, verify:

• The installed breaker's 15 A rated current.
• Three-pole circuit configuration.
• G-frame dimensions and mounting arrangement.
• 65 kA interrupting requirement at 480 V AC.
• Fixed thermal-magnetic trip characteristics.
• Terminal and lug requirements.
• Compatibility with the existing distribution assembly.

A breaker with the same 15 A rating is not necessarily a suitable substitute if its interrupting capacity, voltage rating or mounting arrangement differs.

What is the rated current of the Allen-Bradley 140G-G6C3-C15?

Its rated current is 15 A. The 125 A designation refers to the G-frame rating, not the breaker's operating current.

How many poles does this circuit breaker have?

It is a three-pole molded case circuit breaker for compatible three-phase circuits.

What is its interrupting capacity?

The G6 version has a published interrupting rating of 65 kA at 480 V AC. Other voltage conditions have different breaking-capacity ratings.

Does it have an adjustable trip unit?

No. This model uses fixed thermal and fixed magnetic trip characteristics.

Are connection lugs included?

The factory assembly includes line and load end-cap kits. Connection lugs are ordered separately when required.

Is 140G-G6C3-C15 still an active product?

Rockwell Automation currently lists this catalogue number as active. Confirm the exact product label and configuration when sourcing a unit.

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