140U-QTD3-D45

140U-QTD3-D45

Description:

The 140U-QTD3-D45 trip unit from Allen-Bradley is a trip unit for molded case circuit breakers. It is compatible with 3-pole Q-frame circuit breakers which are part of the Bulletin 140U series and which have a continuous current rating of 450 Amps. The 140U-QTD3-D45 trip unit is a fixed thermal–adjustable magnetic type of trip unit.

Rated 4.8 with 11 reviews

Preowned

Includes a 1-Year DO Supply warranty.

DO Supply is not an authorized distributor for Allen Bradley.

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Description:

The 140U-QTD3-D45 trip unit from Allen-Bradley is a trip unit for molded case circuit breakers. It is compatible with 3-pole Q-frame circuit breakers which are part of the Bulletin 140U series and which have a continuous current rating of 450 Amps. The 140U-QTD3-D45 trip unit is a fixed thermal–adjustable magnetic type of trip unit.


Preowned

Includes a 1-Year DO Supply warranty.

DO Supply is not an authorized distributor for Allen Bradley.

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Warranty: 1 year DO Supply Warranty Included
Shipping: Worldwide shipping via UPS, DHL, and TNT
Repairs: We offer repair service for the 140U-QTD3-D45.
Exchange: Exchange credit for your defective unit available.
Conditions: We sell preowned surplus and refurbished parts.

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Rated 4.8 with 11 reviews

    Technical Specifications for 140U-QTD3-D45

BrandAllen-Bradley / Rockwell Automation
Series140U MCB
Part Number140U-QTD3-D45
Product typeTrip unit
TypeThermal - magnetic
FrameQ
Current rating 450 Amps
Magnetic trip range2250 to 4500 Amps
BrandAllen-Bradley / Rockwell Automation
Series140U MCB
Part Number140U-QTD3-D45
Product typeTrip unit
TypeThermal - magnetic
FrameQ
Current rating 450 Amps
Magnetic trip range2250 to 4500 Amps
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About 140U-QTD3-D45

The 140U-QTD3-D45 trip unit from Allen-Bradley is a trip unit for molded case circuit breakers. It is compatible with 3-pole Q-frame circuit breakers which are part of the Bulletin 140U series and which have a continuous current rating of 450 Amps. The 140U-QTD3-D45 trip unit is a fixed thermal–adjustable magnetic type of trip unit. The magnetic trip range for the 140U-QTD3-D45 trip unit is 2250 to 4500 Amps. The installation of the 140U-QTD3-D45 trip unit into a compatible circuit breaker should not be performed while the circuit breaker is energized. Substantial equipment damage or severe injury can occur due to contact with the energized electrical equipment. The technicians should always verify that no voltage is present before performing any maintenance activity. Generally accepted safety precautions should always be followed.



 



The cover on the 140U-QTD3-D45 trip unit is sealed at the factory to prevent people from tampering with the module’s calibration. The thermal trip mechanism on the 140U-QTD3-D45 trip unit is designed to cause breaker tripping within 2 hours for 135% overload and in less than 2 hours for higher overloads. For the magnetic trip mechanism, the breaker trip occurs instantaneously for currents that exceed the magnetic trip setting. The trip current times are the same for DC or AC voltage in the overload trip region. The magnetic trip setting on each of the circuit breaker poles can be set with a screwdriver. For the magnetic trip region, the DC trip thresholds can be configured at 40% higher levels compared to the AC trip thresholds. The calibration for the 140U-QTD3-D45 trip unit is carried out at 40 degrees Celsius for AC and DC voltage at 50/60 Hertz.



Repair Services for 140U-QTD3-D45

Type Lead Time Price Action
Repair Service 2-4 weeks Askenvelope Get Quote

Our highly skilled technicians can repair your 140U-QTD3-D45. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.

Dimensions For 140U-QTD3-D45

Size
Input Type
Panel Cutout Height in mm
Panel Cutout Width in mm
Terminal Height in mm
Terminal Width in mm
Terminal Overall Depth in mm
Terminal Mounted Depth in mm

Dimensions For 140U-QTD3-D45

Resolutions For 140U-QTD3-D45

About

Technical Specifications for 140U-QTD3-D45

BrandAllen-Bradley / Rockwell Automation
Series140U MCB
Part Number140U-QTD3-D45
Product typeTrip unit
TypeThermal - magnetic
FrameQ
Current rating 450 Amps
Magnetic trip range2250 to 4500 Amps
BrandAllen-Bradley / Rockwell Automation
Series140U MCB
Part Number140U-QTD3-D45
Product typeTrip unit
TypeThermal - magnetic
FrameQ
Current rating 450 Amps
Magnetic trip range2250 to 4500 Amps

About 140U-QTD3-D45

The 140U-QTD3-D45 trip unit from Allen-Bradley is a trip unit for molded case circuit breakers. It is compatible with 3-pole Q-frame circuit breakers which are part of the Bulletin 140U series and which have a continuous current rating of 450 Amps. The 140U-QTD3-D45 trip unit is a fixed thermal–adjustable magnetic type of trip unit. The magnetic trip range for the 140U-QTD3-D45 trip unit is 2250 to 4500 Amps. The installation of the 140U-QTD3-D45 trip unit into a compatible circuit breaker should not be performed while the circuit breaker is energized. Substantial equipment damage or severe injury can occur due to contact with the energized electrical equipment. The technicians should always verify that no voltage is present before performing any maintenance activity. Generally accepted safety precautions should always be followed.



 



The cover on the 140U-QTD3-D45 trip unit is sealed at the factory to prevent people from tampering with the module’s calibration. The thermal trip mechanism on the 140U-QTD3-D45 trip unit is designed to cause breaker tripping within 2 hours for 135% overload and in less than 2 hours for higher overloads. For the magnetic trip mechanism, the breaker trip occurs instantaneously for currents that exceed the magnetic trip setting. The trip current times are the same for DC or AC voltage in the overload trip region. The magnetic trip setting on each of the circuit breaker poles can be set with a screwdriver. For the magnetic trip region, the DC trip thresholds can be configured at 40% higher levels compared to the AC trip thresholds. The calibration for the 140U-QTD3-D45 trip unit is carried out at 40 degrees Celsius for AC and DC voltage at 50/60 Hertz.



Repairs
Type Lead Time Price Action
Repair Service 2-4 weeks Askenvelope Get Quote

Our highly skilled technicians can repair your 140U-QTD3-D45. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.

Type Lead Time Price Action
Repair Service 2-4 weeks Askenvelope Get Quote

Our highly skilled technicians can repair your 140U-QTD3-D45. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.

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