ROCKWELLMotor protection circuit breaker

140G-H3H4-D12

Name: 140G-H3H4-D12
Brand: ROCKWELL
SKU: 140G-H3H4-D12

The Allen-Bradley 140G-H3H4-D12 Molded Case Circuit Breaker provides robust thermal and magnetic protection, supporting up to 125A current with 4 poles. It is designed for high-interrupting applications, ensuring safe and efficient electrical distribution.

Product Model140G-H3H4-D12

Product ID106873

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable ProtectionThe 140G-H3H4-D12 offers comprehensive thermal and magnetic protection, ensuring the safety of your electrical system.
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2. High Current RatingWith a current rating of 125A, this circuit breaker is suitable for demanding applications requiring high power handling.
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3. 4-Pole ConfigurationThe 4-pole design allows for versatile installation options, making it adaptable to various electrical configurations.
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4. High-Interrupting CapacityRated for 35 kA at 480V, this circuit breaker excels in high-interrupting applications, providing reliable performance under challenging conditions.
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Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Number of poles

With integrated under voltage release

False

Integrated earth fault protection

False

Complete device with protection unit

True

Rated permanent current Iu

125 A

Type of control element

Toggle

5. Global ComplianceApproved for global application by UL, CSA, CCC, and IEC standards, ensuring compliance with international safety regulations.

Rated impulse withstand voltage (Uimp)

Voltage for reverse-fed circuit breaker, max

480V AC per UL/CSA

Watt loss

Electronic type: 26.4 W

Protection typeâElectronic I (instantaneous trip units)

I3 = 1...10 x In (125...1250 A)

Insulation voltage (Ui)

Rated 1000V per IEC

Electrical life cycle

8000 @ 415V AC

Protection typeâElectronic L (long time trip units)

I1 = 0.4...1 x In (50...125 A), t1 = 3, 12, 36, 60 s

Protection typeâElectronic S (short time trip units)

I2 = 1...10 x In (125...1250 A), t2 = 0.05, 0.1, 0.2, 0.4 s

Operating current (In), max

97A @ 60Â°C (140 ?F) per UL (molded case switch rated current)

Interrupting rating

35kA @ 480V AC, 50/60 Hz per NEMA, UL, CSA

Rated ultimate short-circuit breaking capacity (Icu)

IEC 60947-2: 85kA @ 220...230V AC, 50/60 Hz

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

Electronic LSI-long and short time, high Instantaneous

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

None

Height

130 mm

Device construction

Built-in device fixed built-in technique

Width

120 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