How does shipping work for orders on MRO Exchange?

Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

What payment methods does MRO Exchange accept?

MRO Exchange accepts all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available, with payment due prior to shipment. Custom terms are available for established accounts.

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Square D 51019-332-04 LINE-ARC DC Contactor

$999.00 USD

Sale Sold out

ConditionSurplus - Untested MPN51019-332-04 Stock #0526-02192

Photos reflect current condition. Items differing from description may be eligible for return or refund — see our condition guide.

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Estimated package weight: 35.0 lbs

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Used in crane bridge, trolley, and heavy industrial DC motor control applications, the Square D EC&M Class 7004 Type MGO-1 is a single-pole, normally open LINE-ARC DC magnetic contactor rated NEMA Size 5. The assembly part number is 51019-332-04 as shown on the shipping label, with the installed operating coil marked 51019-243-93 and rated 230/240 VDC. Per published Square D Class 7004 specifications, the NEMA Size 5 MGO-1 contactor is rated for 600 volts DC maximum and 300 amperes continuous duty (8-hour rating), with a single normally open power pole. The unit is manufactured in Mexico, consistent with Square D / Schneider Electric production markings visible on the frame casting. The iridescent gold metal arc chute plate is present and marked EC&M 1435 No. 5, confirming the NEMA Size 5 arc suppression assembly. The contactor body, coil housing, and mechanical linkage components are all present and visible. Brass power terminals are intact. This contactor type is a direct replacement or spare for Square D Class 7004 Type M LINE-ARC DC contactor applications across mill-duty, crane hoist, and industrial drive systems requiring single-pole DC switching at the NEMA Size 5 current rating. Part is sold as-is surplus.

Stock # 0526-02192

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Frequently Asked Questions

Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.