We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

3G Electric
⌕
RFQ CartGet a QuoteSign inSign up
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 9421LB3) is a 3-pole circuit breaker handle and operator accessory designed for use with NEMA 1, 3, 3R, 4, 4X, and 12 enclosures housing PowerPact B circuit breakers. It includes a…

SKU 3G-OTH-19454

Brand
SQUARE D
Item
Rotary Operator: Rotary Operator, 125 A Amps, 3 Poles
Category
Square D Circuit Breaker Handles & Operators
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

SQUARE D
Manufacturer Part Number
9421LB3
Amps
125 A
Poles
3
Includes
3 in Handle
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
3 in
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The SQUARE D Rotary Operator (MPN 9421LB3) is a 3-pole circuit breaker handle and operator accessory designed for use with NEMA 1, 3, 3R, 4, 4X, and 12 enclosures housing PowerPact B circuit breakers. It includes a 3-inch handle and is rated for 125 A amps.

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from SQUARE D

View all SQUARE D parts →
SQUARE D Handle Assembly: Handle Assembly, 2/3 Poles, 6 in Long Handle (MPN 9421LJ1). Key specifications — For Use With: Compact NSF Circuit Breakers; Number of Poles: 2; Includes: 6 in Long Handle; Brand: SQUARE D; Accessory Type: Handle Assembly.
SQUARE D
SQUARE D Handle Assembly: Handle Assembly, 2/3 Poles, 6 in Long Handle (MPN 9421LJ1). Key specifications — For Use With: Compact NSF Circuit Breakers; Number of Poles: 2; Includes: 6 in Long Handle; Brand: SQUARE D; Accessory Type: Handle Assembly.
SQUARE D Circuit Breaker Operator: Cb Variable Dp Mechanism, PowerPact(R) J Circuit Breakers (MPN 9422RQ1). Key specifications — For Use With: PowerPact(R) J Circuit Breakers; Number of Poles: 3; Brand: SQUARE D; Accessory Type: Cb Variable Depth Mechanism.
SQUARE D
SQUARE D Circuit Breaker Operator: Cb Variable Dp Mechanism, PowerPact(R) J Circuit Breakers (MPN 9422RQ1). Key specifications — For Use With: PowerPact(R) J Circuit Breakers; Number of Poles: 3; Brand: SQUARE D; Accessory Type: Cb Variable Depth Mechanism.
SQUARE D Handle Assembly: Handle Assembly, Type MEL, MXL, MAL, and MHL Circuit Breakers, 2/3 Poles (MPN 9421LT1). Key specifications — For Use With: Type MEL, MXL, MAL, and MHL Circuit Breakers; Number of Poles: 3; Includes: 8 in Long Handle; Brand: SQUARE D; Accessory Type: Handle Assembly.
SQUARE D
SQUARE D Handle Assembly: Handle Assembly, Type MEL, MXL, MAL, and MHL Circuit Breakers, 2/3 Poles (MPN 9421LT1). Key specifications — For Use With: Type MEL, MXL, MAL, and MHL Circuit Breakers; Number of Poles: 3; Includes: 8 in Long Handle; Brand: SQUARE D; Accessory Type: Handle Assembly.
SQUARE D Handle Assembly: Handle Assembly, 2/3 Poles, 6 in Black Handle (MPN 9421LH46). Key specifications — For Use With: PowerPact(R) H and J Circuit Breakers; Number of Poles: 3; Includes: 6 in Black Handle; Brand: SQUARE D; Accessory Type: Handle Assembly.
SQUARE D
SQUARE D Handle Assembly: Handle Assembly, 2/3 Poles, 6 in Black Handle (MPN 9421LH46). Key specifications — For Use With: PowerPact(R) H and J Circuit Breakers; Number of Poles: 3; Includes: 6 in Black Handle; Brand: SQUARE D; Accessory Type: Handle Assembly.
SQUARE D Rotary Operator: Rotary Operator, 125 A Amps, 3 Poles, 6 in Handle/Long Shaft (MPN 9421LB4). Key specifications — For Use With: NEMA 1, 3, 3R, 4, 4X, 12 Enclosures with PowerPact(R) B Circuit Breakers; Number of Poles: 3; Includes: Long Shaft; Brand: SQUARE D; Accessory Type: Rotary Operator.
SQUARE D
SQUARE D Rotary Operator: Rotary Operator, 125 A Amps, 3 Poles, 6 in Handle/Long Shaft (MPN 9421LB4). Key specifications — For Use With: NEMA 1, 3, 3R, 4, 4X, 12 Enclosures with PowerPact(R) B Circuit Breakers; Number of Poles: 3; Includes: Long Shaft; Brand: SQUARE D; Accessory Type: Rotary Operator.
SQUARE D Handle Assembly: Handle Assembly, Type MEL, MXL, MAL, and MHL Circuit Breakers, 2/3 Poles (MPN 9421LT4). Key specifications — For Use With: Type MEL, MXL, MAL, and MHL Circuit Breakers; Number of Poles: 2; Includes: 8 in Long Handle; Brand: SQUARE D; Accessory Type: Handle Assembly.
SQUARE D
SQUARE D Handle Assembly: Handle Assembly, Type MEL, MXL, MAL, and MHL Circuit Breakers, 2/3 Poles (MPN 9421LT4). Key specifications — For Use With: Type MEL, MXL, MAL, and MHL Circuit Breakers; Number of Poles: 2; Includes: 8 in Long Handle; Brand: SQUARE D; Accessory Type: Handle Assembly.
SQUARE D Variable Depth Operating Mechanism: Variable Dp Op Mechanism, 125 A Amps (MPN 9422RB1). Key specifications — For Use With: Custom Built Control Enclosures with PowerPact(R) B Circuit Breaker; Number of Poles: None; Brand: SQUARE D; Accessory Type: Variable Depth Operating Mechanism.
SQUARE D
SQUARE D Variable Depth Operating Mechanism: Variable Dp Op Mechanism, 125 A Amps (MPN 9422RB1). Key specifications — For Use With: Custom Built Control Enclosures with PowerPact(R) B Circuit Breaker; Number of Poles: None; Brand: SQUARE D; Accessory Type: Variable Depth Operating Mechanism.
SQUARE D Rotary Operating Handle: Rotary Op Handle, PowerPact(R) H and J Circuit Breakers (MPN S29343). Key specifications — For Use With: PowerPact(R) H and J Circuit Breakers; Number of Poles: None; Includes: Telescoping Shaft and Operator; Brand: SQUARE D; Accessory Type: Rotary Operating Handle.
SQUARE D
SQUARE D Rotary Operating Handle: Rotary Op Handle, PowerPact(R) H and J Circuit Breakers (MPN S29343). Key specifications — For Use With: PowerPact(R) H and J Circuit Breakers; Number of Poles: None; Includes: Telescoping Shaft and Operator; Brand: SQUARE D; Accessory Type: Rotary Operating Handle.