ROCKWELLMotor protection circuit breaker

140G-H6C3-C15-AJ

Name: 140G-H6C3-C15-AJ
Brand: ROCKWELL
SKU: 140G-H6C3-C15-AJ

The Allen-Bradley 140G-H6C3-C15-AJ is a 125A frame, 3-pole, thermal magnetic molded case circuit breaker designed for reliable motor protection. It features a high interrupting capacity and is UL listed for safety and performance.

Product Model140G-H6C3-C15-AJ

Product ID107764

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. High Interrupting CapacityThe Allen-Bradley 140G-H6C3-C15-AJ boasts an impressive interrupting capacity of 65kA at 480V AC and 70kA at 415V, ensuring it can handle high short-circuit currents effectively.
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2. Reliable Motor ProtectionThis circuit breaker is UL listed, providing 100% breakers that allow the full range of motor protection to be utilized, ensuring the safety and efficiency of your motor systems.
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3. Thermal Magnetic DesignThe thermal magnetic design offers both thermal and magnetic trip currents, providing comprehensive protection against overloads and short circuits. The thermal trip current is 15A, and the magnetic trip current is 400A.
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4. Compact and DurableWith a frame size of 125A, this circuit breaker is compact and designed to be durable, with a mechanical life of 25,000 operations and a weight of 2.65 lbs. It also meets IP40 standards for protection against solid particles.

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Number of poles

Number of auxiliary contacts as change-over contact

With integrated under voltage release

False

Integrated earth fault protection

False

Complete device with protection unit

True

Rated permanent current Iu

15 A

5. Versatile Installation OptionsThe Allen-Bradley 140G-H6C3-C15-AJ can be mounted with screw connections on the front side, making it easy to integrate into various industrial settings. It also supports DIN rail mounting as an optional feature.

Type of control element

Toggle

Rated impulse withstand voltage (Uimp)

8 kV

Frame size

125 A

Magnetic trip current (Im)

400 A

Thermal trip current (Ir)

15 A

Voltage for reverse-fed circuit breaker, max

480V AC per UL/CSA

Watt loss

Thermal magnetic type: 3.4 W

Insulation voltage (Ui)

Rated 1000V per IEC

Thermal trip rating, max

15 A @ ambient temperature 40 Â°C

Electrical life cycle

8000 @ 415V AC

Interrupting rating

65kA @ 480V AC, 50/60 Hz per NEMA, UL, CSA

Rated ultimate short-circuit breaking capacity (Icu)

IEC 60947-2: 70kA @ 500V DC, 3-poles in series, thermal-magnetic trip unit only

Rated service short-circuit breaking capacity (Ics)

IEC 60947-2: 100% lcu @ 500V DC, 3-poles in series, thermal-magnetic trip unit only

Protection type

T/M-fixed thermal/fixed magnetic TMF

Motor drive integrated

False

With switched-off indicator

False

Motor drive optional

True

Position of connection for main current circuit

Front side

Type of electrical connection of main circuit

Screw connection

Suitable for DIN rail (top hat rail) mounting

False

DIN rail (top hat rail) mounting optional

True

Degree of protection (IP)

IP40

Weight

0.999

Mechanical life operations

25000 /h

Vibration

2...13.2 Hz Â±1 mm, 13.2...100 Hz Â±0.7 G

Shock

Peak acceleration: 150 m/s2 peak, pulse duration 11 ms

Factory option

1 NO/NC auxiliary + 1 alarm 24V AC/DC

Height

130 mm

Device construction

Built-in device fixed built-in technique

Width

90 mm

Depth

82.5 mm

Storage temperature

-40 Â°F

Wire temperature rating

Cu 75 Â°C

Operational voltage (Ue)

90% of voltage rating @ 3000 m (9840 ft) altitude

Rated uninterrupted current (Iu)

98% of current rating @ 3000 m (9840 ft) altitude

Ambient temperature without derating

104 Â°F

Repairable

NOT_REPAIRABLE

Preferred Availability

false

Quick Turnaround

false

Dimension Height

0.0

Lead Time

Dimension Width

0.0

Dimension Length

0.0

Stock Status

NON_STOCKED

Weight Unit

Dimension Unit