140G-K6F3-D40-FB

400A K Frame Molded Case Ckt-Bkr

Name: 400A K Frame Molded Case Ckt-Bkr
Brand: Rockwell Automation
SKU: 140G-K6F3-D40-FB

Serial #:

Lifecycle status: Active

Description

140G - Molded Case Circuit Breaker, K frame, 65 kA Interrupt Rating, T/M - Thermal Magnetic, 3 Poles, Rated Current 400 A (80% Rated), 2 No/NC AUX, 400V

Lifecycle status: Active

Description

140G - Molded Case Circuit Breaker, K frame, 65 kA Interrupt Rating, T/M - Thermal Magnetic, 3 Poles, Rated Current 400 A (80% Rated), 2 No/NC AUX, 400V

Unique Product Identifier	140G-K6F3-D40-FB
UPC	887172378157
Estimated Lead Time	21 days
Standard Warranty Duration	1 year See details
Country of Origin	Italy

Ambient temperature without derating	104 °F
Depth	108.5 mm
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
Storage temperature	-40 °F
Width	140 mm
Wire temperature rating	Al or Cu 75°C

Complete device with protection unit	True
Current range	80% MCCB
Electrical life cycle	7000 (400 A)/5000 (600 A) @ 415V AC
Frame size	400 A
Insulation voltage (Ui)	Rated 1000V per IEC
Integrated earth fault protection	False
Interrupting rating	65kA @ 480V AC, 50/60 Hz per NEMA, UL, CSA
Magnetic trip current (Im)	2000 A
Motor drive integrated	False
Motor drive optional	True
Number of auxiliary contacts as change-over contact	2
Number of poles	3
Position of connection for main current circuit	Front side
Protection type	T/M-adjustable thermal/adjustable magnetic TMA
Rated impulse withstand voltage (Uimp)	8 kV
Rated permanent current Iu	400 A
Rated service short-circuit breaking capacity (Ics)	IEC 60947-2: 100% Icu @ 750V DC, 3-poles in series, thermal-magnetic trip units only
Rated ultimate short-circuit breaking capacity (Icu)	IEC 60947-2: 70kA @ 400...415V AC, 50/60 Hz
Thermal trip current (Ir)	280 A
Thermal trip rating, max	400 A @ ambient temperature 40 °C
Type of control element	Toggle
Type of electrical connection of main circuit	Screw connection
Voltage for reverse-fed circuit breaker, max	690V AC per IEC
Watt loss	Thermal magnetic type: 58.5 W
With integrated under voltage release	False
With switched-off indicator	False

Mechanical

DIN rail (top hat rail) mounting optional	False
Degree of protection (IP)	IP40
Factory option	2 NO/NC auxiliary, 400V AC
Mechanical life operations	20000 /h
Shock	Peak acceleration: 150 m/s² peak, pulse duration 11 ms
Suitable for DIN rail (top hat rail) mounting	False
Vibration	2...13.2 Hz ±1 mm, 13.2...100 Hz ±0.7 G
Weight	7.17 lb

Construction

Device construction	Built-in device fixed built-in technique
Height	205 mm

Drawings
3-Dimensional STEP model (STP)	Download (ZIP)
2-Dimensional Drawing (PDF)	Download (PDF)
Product Drawing	Drawing (DXF)

Drawings
3-Dimensional STEP model (STP) Download (ZIP)
2-Dimensional Drawing (PDF) Download (PDF)
Product Drawing Drawing (DXF)

Click the Download CAD button below to view all file formats available for download.

General	Publication
Breaker Wars: MCCB vs MPCB vs MCP vs MCB Podcast	--
Link to Literature Library for Installation Instructions	140G-IN021
Specifications and Technical Data	140G-TD101
Link to Literature Library for Selectivity Guide	140G-TD050
Product Cutsheet	--

Technical Data	Publication
140g-td102_-en-p	140G-TD102

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UKCA DOC

This product was certified with the above certifications as of 2026-10-02. Products sold before or after this date might carry different certifications. Please review the product label to check for the certifications your specific product carries.

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Regulatory Information

EU Importer Address	Rockwell Automation N.V Pegasus Park De Kleetlaan 12A 1831 Diegem Belgium
EU Authorized Representative Address	Rockwell Automation N.V Pegasus Park De Kleetlaan 12A 1831 Diegem Belgium

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Overview

Unique Product Identifier	140G-K6F3-D40-FB
UPC	887172378157
Estimated Lead Time	21 days
Standard Warranty Duration	1 year See details
Country of Origin	Italy

Compliance & Environment

Ambient temperature without derating	104 °F
Depth	108.5 mm
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
Storage temperature	-40 °F
Width	140 mm
Wire temperature rating	Al or Cu 75°C

Electrical & Connectivity

Complete device with protection unit	True
Current range	80% MCCB
Electrical life cycle	7000 (400 A)/5000 (600 A) @ 415V AC
Frame size	400 A
Insulation voltage (Ui)	Rated 1000V per IEC
Integrated earth fault protection	False
Interrupting rating	65kA @ 480V AC, 50/60 Hz per NEMA, UL, CSA
Magnetic trip current (Im)	2000 A
Motor drive integrated	False
Motor drive optional	True
Number of auxiliary contacts as change-over contact	2
Number of poles	3
Position of connection for main current circuit	Front side
Protection type	T/M-adjustable thermal/adjustable magnetic TMA
Rated impulse withstand voltage (Uimp)	8 kV
Rated permanent current Iu	400 A
Rated service short-circuit breaking capacity (Ics)	IEC 60947-2: 100% Icu @ 750V DC, 3-poles in series, thermal-magnetic trip units only
Rated ultimate short-circuit breaking capacity (Icu)	IEC 60947-2: 70kA @ 400...415V AC, 50/60 Hz
Thermal trip current (Ir)	280 A
Thermal trip rating, max	400 A @ ambient temperature 40 °C
Type of control element	Toggle
Type of electrical connection of main circuit	Screw connection
Voltage for reverse-fed circuit breaker, max	690V AC per IEC
Watt loss	Thermal magnetic type: 58.5 W
With integrated under voltage release	False
With switched-off indicator	False

Physical Characteristics

Mechanical

DIN rail (top hat rail) mounting optional	False
Degree of protection (IP)	IP40
Factory option	2 NO/NC auxiliary, 400V AC
Mechanical life operations	20000 /h
Shock	Peak acceleration: 150 m/s² peak, pulse duration 11 ms
Suitable for DIN rail (top hat rail) mounting	False
Vibration	2...13.2 Hz ±1 mm, 13.2...100 Hz ±0.7 G
Weight	7.17 lb

Construction

Device construction	Built-in device fixed built-in technique
Height	205 mm

Drawings

Drawings
3-Dimensional STEP model (STP)	Download (ZIP)
2-Dimensional Drawing (PDF)	Download (PDF)
Product Drawing	Drawing (DXF)

Drawings
3-Dimensional STEP model (STP) Download (ZIP)
2-Dimensional Drawing (PDF) Download (PDF)
Product Drawing Drawing (DXF)

Click the Download CAD button below to view all file formats available for download.

Documents

Breaker Wars: MCCB vs MPCB vs MCP vs MCB Podcast General
--

Link to Literature Library for Installation Instructions General
140G-IN021

Specifications and Technical Data General
140G-TD101

Link to Literature Library for Selectivity Guide General
140G-TD050

Product Cutsheet General
--

140g-td102_-en-p Technical Data
140G-TD102

General	Publication
Breaker Wars: MCCB vs MPCB vs MCP vs MCB Podcast	--
Link to Literature Library for Installation Instructions	140G-IN021
Specifications and Technical Data	140G-TD101
Link to Literature Library for Selectivity Guide	140G-TD050
Product Cutsheet	--
Technical Data	Publication
140g-td102_-en-p	140G-TD102

Looking for more documentation?

Find curated technical documentation for this product in the Technical Documentation Center, or search our full Literature Library.

Search the Literature Library

Certifications

${name=UKCA DOC, link=http://literature.rockwellautomation.com/idc/groups/literature/documents/ct/140g-ct051_-en-e.pdf}$

UKCA DOC

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Regulatory Information

EU Importer Address	Rockwell Automation N.V Pegasus Park De Kleetlaan 12A 1831 Diegem Belgium
EU Authorized Representative Address	Rockwell Automation N.V Pegasus Park De Kleetlaan 12A 1831 Diegem Belgium

Accessories

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Technotes

Technotes

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