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SQUARE D Auxiliary Contact: 1NO - Square D Auxiliary Contacts
SQUARE DSquare D Auxiliary Contacts

SQUARE D Auxiliary Contact: 1NO

SQUARE D Square D Auxiliary Contacts.

SKU 3G-OTH-37968

Brand
SQUARE D
Item
Auxiliary Contact: 1NO
Category
Square D Auxiliary Contacts
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

SQUARE D
Manufacturer Part Number
9999D10

Technical Documents

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

Product Description

SQUARE D Square D Auxiliary Contacts.

Frequently Asked Questions

What is the SQUARE D 9999D10 auxiliary contact used for?

The SQUARE D 9999D10 auxiliary contact is used in industrial control panels to signal the status of a main switching device, such as a contactor or relay. It provides one normally open (1NO) circuit rated for up to 5 A AC, enabling remote monitoring or interlocking in automation systems.

What are the specifications of the SQUARE D 9999D10 auxiliary contact?

The SQUARE D 9999D10 auxiliary contact has one normally open (1NO) pole with a maximum continuous current of 5 A AC. It is manufactured by SQUARE D under part number 9999D10. This compact unit is designed for snap-on mounting to compatible Square D contactors and relays.

Where to buy the SQUARE D 9999D10 auxiliary contact worldwide?

You can source the SQUARE D 9999D10 auxiliary contact through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this Square D part.

How to install the SQUARE D 9999D10 auxiliary contact?

To install the SQUARE D 9999D10 auxiliary contact, ensure the main device is de-energized. Snap the contact onto the designated mounting slot of a compatible Square D contactor or relay until it locks. Wire the normally open terminals per your control schematic, using torque values specified by Square D.

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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