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SQUARE D Auxiliary Contact: 1NO/2NC (MPN 9999AC04) - Square D Auxiliary Contacts
SQUARE DSquare D Auxiliary Contacts

SQUARE D Auxiliary Contact: 1NO/2NC (MPN 9999AC04)

The SQUARE D Auxiliary Contact (MPN 9999AC04) is a 1NO/2NC contact block designed for use with Motor Logic™ Overload Relays. This auxiliary contact provides additional switching capacity for monitoring and control…

SKU 3G-OTH-37890

Brand
SQUARE D
Item
Auxiliary Contact: 1NO/2NC
Category
Square D Auxiliary Contacts
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Technical Specifications

SQUARE D
Manufacturer Part Number
9999AC04
Compatible with Series
Motor Logic™ Overload Relays

Technical Documents

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SQUARE D Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SQUARE D Auxiliary Contact (MPN 9999AC04) is a 1NO/2NC contact block designed for use with Motor Logic™ Overload Relays. This auxiliary contact provides additional switching capacity for monitoring and control applications within industrial equipment.

Frequently Asked Questions

What is the SQUARE D 9999AC04 auxiliary contact used for?

The SQUARE D 9999AC04 auxiliary contact block provides additional switching capacity for monitoring and control applications. It is designed for use with Motor Logic™ Overload Relays in industrial equipment, enabling status feedback or interlocking circuits.

What are the specifications of the SQUARE D 9999AC04 auxiliary contact?

The SQUARE D 9999AC04 is a 1NO/2NC contact block. It is compatible with the Motor Logic™ Overload Relays series. The manufacturer part number is 9999AC04. This auxiliary contact is used for additional switching in industrial control circuits.

Where to buy the SQUARE D 9999AC04 auxiliary contact worldwide?

3G Electric supplies the SQUARE D 9999AC04 auxiliary contact worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the SQUARE D 9999AC04 auxiliary contact?

Install the SQUARE D 9999AC04 auxiliary contact by mounting it onto the compatible Motor Logic™ Overload Relay. Ensure power is off, then snap the contact block into place and wire according to the circuit diagram. Follow standard industrial safety practices.

Used in

Common applications for SQUARE D
Commercial building electrical panels — Square D QO series plug-in circuit breakers for branch circuit protection
Industrial motor control centers — Square D QOB series bolt-on breakers in NQOD panelboards
Heating equipment installations — Square D QOU series unit-mount breakers for overcurrent protection
Outdoor electrical distribution — Square D L-Frame enclosures housing LAL/LHL breakers for 400 A service
Indoor facility power distribution — Square D Q-Frame enclosures with QBL/QDL breakers for 225 A circuits
Retrofit and replacement in existing Square D load centers — QO series breakers for 120/240V AC systems

SQUARE D Products

3G Electric supplies SQUARE D square d auxiliary contacts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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