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Allen Bradley

Allen Bradley MPS-B4540F-MJ54DA Motor Protection Starter

Allen Bradley MPS-B4540F-MJ54DA Motor Protection Starter.

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

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ManufacturerAllen Bradley

Part numberMPS-B4540F-MJ54DA

Frame Size 1

Trip Range 3.3-4.0 A

Voltage 600V max

Phase Unbalance Sensitivity Yes

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Response within 1 business hour

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12-month warranty

All units tested

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Same-day dispatch

Order by 2pm CST

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Worldwide delivery

US, EU, Asia, Middle East

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Veteran-owned

CAGE: 9NK75

Adjustable thermal overload Phase unbalance sensitivity Manual reset Compact and robust construction High interrupting rating DIN rail or direct mount

Product description

The Allen Bradley MPS-B4540F-MJ54DA is a high-quality Motor Protection Starter offering advanced motor protection features. It includes an adjustable thermal overload with a 3.3-4.0A trip range and phase unbalance sensitivity, ensuring comprehensive protection against electrical disturbances and overloads. Built for durability, it performs reliably in demanding industrial environments.

This motor starter is essential for various industrial sectors, including manufacturing, food and beverage, and infrastructure projects. It is commonly used to protect motors in pumps, fans, compressors, and automated machinery, thereby minimizing downtime and maintenance costs.

Stanlo Automation, a veteran-owned surplus distributor, offers the Allen Bradley MPS-B4540F-MJ54DA at competitive prices. We ensure our customers receive high-quality, tested components to keep their automation systems running smoothly.

Technical specifications

Frame Size	1
Trip Range	3.3-4.0 A
Voltage	600V max
Phase Unbalance Sensitivity	Yes
Mounting	Direct Mount or 35mm DIN Rail

Common applications

Motor protection

Pump control

Fan starter

Conveyor motors

Industrial automation

Compressor protection

Compatible systems

Allen Bradley ControlLogix Allen Bradley CompactLogix Allen Bradley SLC 500 Allen Bradley PLC-5

Also known as

Allen Bradley 140G-MP4C1-DA-UN Bulletin 140G Motor Starter MPS-B4540F-MJ54DA Controller

Replaces / compatible with

This starter is part of the Allen Bradley Bulletin 140G series, providing advanced protection capabilities for industrial motors.

Technical note

Expert tip

The MJ54DA variant is recommended for applications where power quality may be inconsistent, offering enhanced protection against phase unbalance issues.

What happens next?

Email confirmation

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Confirms your part's spec and condition

Your quote delivered

Tailored to your specific requirements

Frequently asked questions

How does the phase unbalance sensitivity work on the Allen Bradley MPS-B4540F-MJ54DA?

The phase unbalance sensitivity feature detects unequal voltage levels across the three phases supplying the motor. If the imbalance exceeds a safe limit, the starter will trip to prevent motor damage from uneven heating.