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SQUARE D Auxiliary Contact: 1NC - Square D Auxiliary Contacts
SQUARE DSquare D Auxiliary Contacts

SQUARE D Auxiliary Contact: 1NC

The SQUARE D Auxiliary Contact (MPN 9999SX7) is a 1NC, 10 A Max Current (AC) auxiliary contact designed for use with 8903S Lighting Contactors. This Square D component provides normally closed switching capability…

SKU 3G-OTH-38080

Brand
SQUARE D
Item
Auxiliary Contact: 1NC
Category
Square D Auxiliary Contacts
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Technical Specifications

SQUARE D
Manufacturer Part Number
9999SX7
Compatible with Series
8903S Lighting Contactors

Technical Documents

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

Product Description

The SQUARE D Auxiliary Contact (MPN 9999SX7) is a 1NC, 10 A Max Current (AC) auxiliary contact designed for use with 8903S Lighting Contactors. This Square D component provides normally closed switching capability for industrial control applications.

Frequently Asked Questions

What is the SQUARE D 9999SX7 auxiliary contact used for?

The SQUARE D 9999SX7 auxiliary contact provides normally closed (1NC) switching for industrial lighting control systems. It is designed for use with 8903S Lighting Contactors to signal status or interlock circuits in commercial and industrial installations.

What are the specifications of the SQUARE D 9999SX7?

The SQUARE D 9999SX7 is a 1NC auxiliary contact rated for 10 A max current (AC). It is compatible with the 8903S Lighting Contactors series. The manufacturer part number is 9999SX7, and it is a genuine Square D component for industrial control applications.

Where to buy the SQUARE D 9999SX7 worldwide?

3G Electric supplies the SQUARE D 9999SX7 auxiliary contact to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this Square D component.

How to install the SQUARE D 9999SX7 auxiliary contact?

Install the SQUARE D 9999SX7 auxiliary contact onto the 8903S Lighting Contactor per the manufacturer's wiring diagram. Ensure power is off, mount the contact securely, and verify normally closed (NC) continuity before energizing the circuit.

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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Cross-referenced by specification & description
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