140M-D8T-C20

Motor Protection Circuit-Breaker

Name: Motor Protection Circuit-Breaker
Brand: Rockwell Automation
SKU: 140M-D8T-C20

Serial #:

Lifecycle status: Discontinued

Rockwell Automation announces that as of February 25, 2022, the Motor Protection Circuit-Breaker will be discontinued and no longer available for sale. Customers are encouraged to remove references to the affected product(s)

Discontinued Date: February 25, 2022 Replacement Category: Engineering Replacement Replacement Product: 140MT-D9T-C20 [https://www.rockwellautomation.com/en-us/products/details.140MT-D9T-C20.html]

Product at a glance

Replacement Available

Lifecycle status: Discontinued

Discontinued Date: February 25, 2022 Replacement Category: Engineering Replacement Replacement Product: 140MT-D9T-C20 [https://www.rockwellautomation.com/en-us/products/details.140MT-D9T-C20.html]

Product at a glance

Replacement Available

Unique Product Identifier	140M-D8T-C20
UPC	662468964555
Standard Warranty Duration	1 year See details
Country of Origin	Switzerland

Amperage Rating	14.5 - 20A,MxRtg MCPs(no OvPrt)is 1200.0A

Back up fuse (gG, gL) current rating (if Icc ≥ Icu )	No back-up fuse required per IEC
Current range	14.5 to 20 A
Electrical life cycle	100000 ops
Fuse or circuit breaker, max	450 A per NEC, UL 508-manual motor controller
Hp rating, max	7.5Hp @ 230V, 3-phase
Insulation voltage	Rated 690V per IEC, SEV, VDE0660
KW rating, max	17 kW @ 690V, 3-phase, AC-3
Magnetic release current	325 A per IEC
Magnetic trip current	325 A
Number of poles	3
Overload release current setting	14.5 A
Overload trip class	10
Phase failure sensitive	True
Phase loss protection	Differential release
Rated frequency	50/60 Hz
Rated impulse withstand voltage (Uimp) for auxiliary circuits/overvoltage category	6kV/III
Rated impulse withstand voltage (Uimp) for main circuits/overvoltage category	6kV/III
Rated operating voltage	230 A
Rated operation power at AC-3, 230 V	5.5 kw
Rated operation power at AC-3, 400 V	10 kw
Rated operational current (Ie)	20 A per IEC
Rated permanent current Iu	20 A
Rated service short-circuit breaking capacity (Ics)	4kA @ 690V per IEC
Rated short-circuit breaking capacity lcu at 400 V, AC	65 kA
Rated supply current (Ie)	1.6 A
Rated thermal current (Ith)	1.6...32 A @ up to 60 °C ambient temperature
Short circuit current (Icu) for group motor, max	30kA @ 480V
Short circuit current for combination motor controller, max	30 kA @ 480Y/277V per UL 508-self-protected (Type E)
Short circuit current for group motor installation, max	30kA @ 600V, UL 508-manual motor controller
Short circuit current for motor disconnect, max	30kA @ 600V, UL 508-manual motor controller
Short circuit current for tap conductor protection, max	30 kA @ 480Y/277V per UL 508-manual motor controller
Short circuit current, max	65kA @ 480V, Type 2 coordination
Switch off technique	Thermomagnetic
Switching frequency, max	25 ops/h
Switching of standard motors	5.5 kW @ 230/240V (AC-3), 3-phase per IEC
Total power loss (Pv) for circuit breaker at rated load operating temperature	6 W
Type of control element	Turn button
Type of electrical connection of main circuit	Screw connection
Ultimate short circuit breaking capacity (Icu)	65kA @ 400/415V per IEC
With integrated auxiliary switch	False
With integrated under voltage release	False
With thermal protection	True

Altitude	2000 m (NN)
Ambient operating temperature	-25 °C
Ambient storage temperature	-40 °C
Ambient temperature compensation	-20 °C
Dependence on temperature @ 40 °C	No current reduction
Dependence on temperature @ 50 °C	No current reduction
Dependence on temperature @ 60 °C	No current reduction
Dependence on temperature @ 70 °C	15% current reduction of the upper rated current Ie @ 70 °C (158 °F)
Dry heat (60086-2-2)	100 °C, relative humidity < 50 %, 7 d
Magnetic release current (±20 %)	Fixed setting 16...21 x Ie maximum (Ie maximum = maximum values of setting ranges)
Moisture change climate (600068-2-30)	23 °C/83 % relative humidity and 40 °C/92 % relative humidity, 56 cycles
Moisture heat (60068-2-3)	40 °C, relative humidity 93 %, 56 d
Pollution degree	3

Construction

Contactor size, min	100-C30 @ 600V, Type 2 coordination
Depth	80 mm
Device construction	Built-in device fixed built-in technique
Frame size	Frame size D, 32 A
Height	90 mm
Width	45 mm

Mechanical

Breaking capacity	High breaking capacity
Degree of protection (IP)	IP2X
Factory option	No circuit-breaker auxiliary or trip contacts
Mechanical life operations	100000 /h
Protection type	Adjustable thermal/fixed magnetic (fixed at 16...20 x In)
Shock resistance	Transport (60068-2-27): 30 G, 11 ms, all axes
Vibration resistance	Ops (60068-2-6): 5 G
Weight	365 lb

Technical Data	Publication
140m-td002_-en-p	140M-TD002

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China CCC

This product was certified with the above certifications as of 2026-07-16. 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	140M-D8T-C20
UPC	662468964555
Standard Warranty Duration	1 year See details
Country of Origin	Switzerland

Electrical & Connectivity

Amperage Rating	14.5 - 20A,MxRtg MCPs(no OvPrt)is 1200.0A

Back up fuse (gG, gL) current rating (if Icc ≥ Icu )	No back-up fuse required per IEC
Current range	14.5 to 20 A
Electrical life cycle	100000 ops
Fuse or circuit breaker, max	450 A per NEC, UL 508-manual motor controller
Hp rating, max	7.5Hp @ 230V, 3-phase
Insulation voltage	Rated 690V per IEC, SEV, VDE0660
KW rating, max	17 kW @ 690V, 3-phase, AC-3
Magnetic release current	325 A per IEC
Magnetic trip current	325 A
Number of poles	3
Overload release current setting	14.5 A
Overload trip class	10
Phase failure sensitive	True
Phase loss protection	Differential release
Rated frequency	50/60 Hz
Rated impulse withstand voltage (Uimp) for auxiliary circuits/overvoltage category	6kV/III
Rated impulse withstand voltage (Uimp) for main circuits/overvoltage category	6kV/III
Rated operating voltage	230 A
Rated operation power at AC-3, 230 V	5.5 kw
Rated operation power at AC-3, 400 V	10 kw
Rated operational current (Ie)	20 A per IEC
Rated permanent current Iu	20 A
Rated service short-circuit breaking capacity (Ics)	4kA @ 690V per IEC
Rated short-circuit breaking capacity lcu at 400 V, AC	65 kA
Rated supply current (Ie)	1.6 A
Rated thermal current (Ith)	1.6...32 A @ up to 60 °C ambient temperature
Short circuit current (Icu) for group motor, max	30kA @ 480V
Short circuit current for combination motor controller, max	30 kA @ 480Y/277V per UL 508-self-protected (Type E)
Short circuit current for group motor installation, max	30kA @ 600V, UL 508-manual motor controller
Short circuit current for motor disconnect, max	30kA @ 600V, UL 508-manual motor controller
Short circuit current for tap conductor protection, max	30 kA @ 480Y/277V per UL 508-manual motor controller
Short circuit current, max	65kA @ 480V, Type 2 coordination
Switch off technique	Thermomagnetic
Switching frequency, max	25 ops/h
Switching of standard motors	5.5 kW @ 230/240V (AC-3), 3-phase per IEC
Total power loss (Pv) for circuit breaker at rated load operating temperature	6 W
Type of control element	Turn button
Type of electrical connection of main circuit	Screw connection
Ultimate short circuit breaking capacity (Icu)	65kA @ 400/415V per IEC
With integrated auxiliary switch	False
With integrated under voltage release	False
With thermal protection	True

Compliance & Environment

Altitude	2000 m (NN)
Ambient operating temperature	-25 °C
Ambient storage temperature	-40 °C
Ambient temperature compensation	-20 °C
Dependence on temperature @ 40 °C	No current reduction
Dependence on temperature @ 50 °C	No current reduction
Dependence on temperature @ 60 °C	No current reduction
Dependence on temperature @ 70 °C	15% current reduction of the upper rated current Ie @ 70 °C (158 °F)
Dry heat (60086-2-2)	100 °C, relative humidity < 50 %, 7 d
Magnetic release current (±20 %)	Fixed setting 16...21 x Ie maximum (Ie maximum = maximum values of setting ranges)
Moisture change climate (600068-2-30)	23 °C/83 % relative humidity and 40 °C/92 % relative humidity, 56 cycles
Moisture heat (60068-2-3)	40 °C, relative humidity 93 %, 56 d
Pollution degree	3

Physical Characteristics

Construction

Contactor size, min	100-C30 @ 600V, Type 2 coordination
Depth	80 mm
Device construction	Built-in device fixed built-in technique
Frame size	Frame size D, 32 A
Height	90 mm
Width	45 mm

Mechanical

Breaking capacity	High breaking capacity
Degree of protection (IP)	IP2X
Factory option	No circuit-breaker auxiliary or trip contacts
Mechanical life operations	100000 /h
Protection type	Adjustable thermal/fixed magnetic (fixed at 16...20 x In)
Shock resistance	Transport (60068-2-27): 30 G, 11 ms, all axes
Vibration resistance	Ops (60068-2-6): 5 G
Weight	365 lb

Documents

140m-td002_-en-p Technical Data
140M-TD002

Technical Data	Publication
140m-td002_-en-p	140M-TD002

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Certifications

${name=China CCC, link=http://literature.rockwellautomation.com/idc/groups/literature/documents/ct/140m-ct004_-en-e.pdf}$

China CCC

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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

Alternative Products

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Technotes

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