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SQUARE D Rotary Operator: Rotary Operator, 125 A Amps, 3 Poles - Square D Circuit Breaker Handles & Operators
SQUARE DSquare D Circuit Breaker Handles & Operators

SQUARE D Rotary Operator: Rotary Operator, 125 A Amps, 3 Poles

The SQUARE D Rotary Operator (MPN 9421LB4) is a 3-pole circuit breaker handle and operator accessory designed for use with PowerPact B circuit breakers in NEMA 1, 3, 3R, 4, 4X, and 12 enclosures. It includes a long…

SKU 3G-OTH-19469

Brand
SQUARE D
Item
Rotary Operator: Rotary Operator, 125 A Amps, 3 Poles
Category
Square D Circuit Breaker Handles & Operators
Available to Order
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

SQUARE D
Manufacturer Part Number
9421LB4
Amps
125 A
Poles
3
Includes
Long Shaft
For Use With
NEMA 1, 3, 3R, 4, 4X, 12 Enclosures with PowerPact(R) B Circuit Breakers
Accessory Type
Rotary Operator
Number of Poles
3
Handle/Long Shaft
6 in

Technical Documents

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

Product Description

The SQUARE D Rotary Operator (MPN 9421LB4) is a 3-pole circuit breaker handle and operator accessory designed for use with PowerPact B circuit breakers in NEMA 1, 3, 3R, 4, 4X, and 12 enclosures. It includes a long shaft and is rated for 125 A. This rotary operator enables external manual operation of the breaker while maintaining enclosure integrity.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the SQUARE D 9421LB4 rotary operator used for?

The SQUARE D 9421LB4 rotary operator is a circuit breaker handle accessory that allows external manual on/off control of a PowerPact B breaker without opening the enclosure door. It is rated for 125 A, 3 poles, and works with NEMA 1, 3, 3R, 4, 4X, and 12 enclosures.

What are the specifications of the SQUARE D 9421LB4?

The SQUARE D 9421LB4 is a 3-pole rotary operator rated for 125 A. It includes a 6 in handle/long shaft and is designed for use with PowerPact B circuit breakers in NEMA 1, 3, 3R, 4, 4X, and 12 enclosures. The accessory type is rotary operator, and the manufacturer part number is 9421LB4.

Where to buy the SQUARE D 9421LB4 worldwide?

3G Electric supplies the SQUARE D 9421LB4 rotary operator to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this Square D circuit breaker handle accessory.

How to install the SQUARE D 9421LB4 rotary operator?

Installation of the SQUARE D 9421LB4 rotary operator typically involves mounting the operator to the enclosure door and coupling it to the PowerPact B breaker's long shaft. Always follow the manufacturer's instructions and ensure the breaker is de-energized before installation. Proper alignment is critical for reliable operation.

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 circuit breaker handles & operators. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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