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

SQUARE D Auxiliary Contact: 1NC

SQUARE D Square D Auxiliary Contacts.

SKU 3G-OTH-37984

Brand
SQUARE D
Item
Auxiliary Contact: 1NC
Category
Square D Auxiliary Contacts
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

SQUARE D
Manufacturer Part Number
9999D01

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 9999D01 auxiliary contact used for?

The SQUARE D 9999D01 auxiliary contact is used in industrial control panels to provide status feedback from contactors and relays. It is commonly applied in motor control centers, conveyor systems, and automation equipment where a normally closed (1NC) circuit is needed for signaling or interlocking.

What are the specifications of the SQUARE D 9999D01 auxiliary contact?

The SQUARE D 9999D01 is a 1NC auxiliary contact with a maximum current rating of 5 A AC. It is manufactured by SQUARE D under part number 9999D01. This component is designed for use with compatible SQUARE D contactors and relays in industrial control applications.

Where to buy SQUARE D 9999D01 auxiliary contacts worldwide?

3G Electric supplies the SQUARE D 9999D01 auxiliary contact worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your site. Contact our team to source this part for your application.

How to install the SQUARE D 9999D01 auxiliary contact?

To install the SQUARE D 9999D01 auxiliary contact, first de-energize all power. Mount the contact block onto the compatible SQUARE D contactor or relay using the provided clips or screws. Wire the normally closed (1NC) circuit per your control schematic, ensuring the 5 A AC rating is not exceeded.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
SQUARE D Auxiliary Contact: 1NO, 5 A Max Current (AC) (MPN 9999D10)
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SQUARE D Overload Relay Auxiliary Contact (MPN 9999SO5)
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