ROCKWELLMotor protection circuit breaker

140G-M5H3-D80-CJ

Name: 140G-M5H3-D80-CJ
Brand: ROCKWELL
SKU: 140G-M5H3-D80-CJ

The Allen Bradley 140G-M5H3-D80-CJ is a robust, 800A molded case circuit breaker suitable for various industrial control panels and motor applications. It features electronic LSI protection and a high interrupting capacity, ensuring reliable operation in demanding conditions.

Product Model140G-M5H3-D80-CJ

Product ID109012

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. High Current RatingThe 140G-M5H3-D80-CJ supports an impressive 800A current rating, making it suitable for high-power applications in industrial settings.
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2. Enhanced Interrupting CapacityWith an interrupting capacity of 50kA at 480V AC, this circuit breaker provides robust protection against short circuits, ensuring the safety of equipment and personnel.
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3. Electronic LSI ProtectionEquipped with electronic LSI (Long and Short Time) protection, this breaker offers high instantaneous and long-time protection against electrical faults, ensuring reliable operation.
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4. Durable ConstructionBuilt with a durable design, the 140G-M5H3-D80-CJ is engineered to withstand harsh industrial environments, including high temperatures and altitudes.

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

800 A

5. IP40 ProtectionFeaturing an IP40 rating, this circuit breaker provides protection against solid particles and dust, ensuring it operates effectively in various industrial settings.

Type of control element

Toggle

Rated impulse withstand voltage (Uimp)

8 kV

Frame size

800 A

Current range

80% MCCB

Voltage for reverse-fed circuit breaker, max

690V AC per IEC

Protection typeâElectronic I (instantaneous trip units)

I3 = 1200...8400 A

Insulation voltage (Ui)

Rated 1000V per IEC

Electrical life cycle

7000 (600...630 A)/5000 (800 A) @ 415V AC

Protection typeâElectronic L (long time trip units)

I1 = 0.4...1 x In (320...800 A), t1 = 3, 6, 9, 18 s

Protection typeâElectronic S (short time trip units)

I2 = 0.6...10 x In (480...8000 A), t2 = 0.05, 0.1, 0.25, 0.5 s

Operating current (In), max

800A @ 50Â°C (122 ?F) per IEC

Interrupting rating

50kA @ 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: 75% Icu @ 750V DC, 3-poles in series, thermal-magnetic trip units 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

10.636

Mechanical life operations

20000 /h

Vibration

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

Factory option

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

Height

268 mm

Device construction

Built-in device fixed built-in technique

Width

210 mm

Depth

103.5 mm

Storage temperature

-40 Â°F

Wire temperature rating

Al or 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

31.0

Lead Time

Dimension Width

37.4

Dimension Length

29.2

Stock Status

NON_STOCKED

Weight Unit

Dimension Unit