Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

SQUARE D Handle Clamp: Handle Clamp - Square D Circuit Breaker Locks, Padlocks & Interlocks
SQUARE DSquare D Circuit Breaker Locks, Padlocks & Interlocks

SQUARE D Handle Clamp: Handle Clamp

The SQUARE D Handle Clamp (MPN HLO1) is a circuit breaker accessory designed for use with Square D QO and Q1 Series Breaker Handles. This handle clamp provides a secure attachment point for locking or interlocking…

SKU 3G-OTH-20750

Brand
SQUARE D
Item
Handle Clamp: Handle Clamp
Category
Square D Circuit Breaker Locks, Padlocks & Interlocks
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
HLO1
For Use With
Square D QO and Q1 Series Breaker Handles
Accessory Type
Handle Clamp
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 Handle Clamp (MPN HLO1) is a circuit breaker accessory designed for use with Square D QO and Q1 Series Breaker Handles. This handle clamp provides a secure attachment point for locking or interlocking the breaker handle, enhancing safety during maintenance or lockout/tagout procedures.

Frequently Asked Questions

What is the SQUARE D HLO1 handle clamp used for?

The SQUARE D HLO1 handle clamp is a circuit breaker accessory that provides a secure attachment point for locking or interlocking Square D QO and Q1 Series breaker handles. It enhances safety during maintenance and lockout/tagout procedures by preventing accidental operation.

What are the specifications of the SQUARE D HLO1 handle clamp?

The SQUARE D HLO1 is a handle clamp accessory for Square D QO and Q1 Series breaker handles. It is manufactured by SQUARE D under part number HLO1. The clamp is designed to securely attach to the breaker handle for locking or interlocking applications.

Where to buy the SQUARE D HLO1 handle clamp worldwide?

3G Electric supplies the SQUARE D HLO1 handle clamp worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to order this Square D circuit breaker accessory for your lockout/tagout needs.

How to install the SQUARE D HLO1 handle clamp?

To install the SQUARE D HLO1 handle clamp, first ensure the breaker is in the OFF position. Attach the clamp securely to the Square D QO or Q1 Series breaker handle following the manufacturer's instructions. Always follow standard lockout/tagout procedures and consult a qualified electrician if needed.

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 locks, padlocks & interlocks. 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

Similar products

Matched by specification & description
SQUARE D Handle Padlock Attachment, Fixed: Handle Padlock Attachment, Fixed (MPN QO1PA). Key specifications — For Use With: Square D QO and QOB Miniature Circuit Breakers; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment, Fixed.
SQUARE D
SQUARE D Handle Padlock Attachment, Fixed: Handle Padlock Attachment, Fixed (MPN QO1PA). Key specifications — For Use With: Square D QO and QOB Miniature Circuit Breakers; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment, Fixed.
SQUARE D Handle Padlock Attachment: Handle Padlock Attachment (MPN HPALM). Key specifications — For Use With: Square D LA, LH, Q4, MA, ME, MH, MX Circuit Breakers; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment.
SQUARE D
SQUARE D Handle Padlock Attachment: Handle Padlock Attachment (MPN HPALM). Key specifications — For Use With: Square D LA, LH, Q4, MA, ME, MH, MX Circuit Breakers; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment.
SQUARE D Handle Padlock Attachment: Handle Padlock Attachment, Square D Q2 and FYCircuit Breaker (MPN HPAFYQ). Key specifications — For Use With: Square D Q2 and FYCircuit Breaker; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment.
SQUARE D
SQUARE D Handle Padlock Attachment: Handle Padlock Attachment, Square D Q2 and FYCircuit Breaker (MPN HPAFYQ). Key specifications — For Use With: Square D Q2 and FYCircuit Breaker; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment.
SQUARE D Handle Padlock Attachment: Handle Padlock Attachment, 2 PK (MPN MG26970). Key specifications — For Use With: Square D C60 Circuit Protection Devices; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment.
SQUARE D
SQUARE D Handle Padlock Attachment: Handle Padlock Attachment, 2 PK (MPN MG26970). Key specifications — For Use With: Square D C60 Circuit Protection Devices; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment.
SQUARE D Padlock Attachment: Handle Padlock Attachment, Square D Homeline Miniature Circuit Breakers (MPN HOM2PAHA). Key specifications — For Use With: Square D Homeline Miniature Circuit Breakers; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment.
SQUARE D
SQUARE D Padlock Attachment: Handle Padlock Attachment, Square D Homeline Miniature Circuit Breakers (MPN HOM2PAHA). Key specifications — For Use With: Square D Homeline Miniature Circuit Breakers; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment.
SQUARE D Interlock Attachment: Interlock Attachment, Square D QO and QOB Miniature Circuit Breakers (MPN QO2DTI). Key specifications — For Use With: Square D QO and QOB Miniature Circuit Breakers; Includes: (1) Steel Interlock Attachment; Brand: SQUARE D; Accessory Type: Interlock Attachment.
SQUARE D
SQUARE D Interlock Attachment: Interlock Attachment, Square D QO and QOB Miniature Circuit Breakers (MPN QO2DTI). Key specifications — For Use With: Square D QO and QOB Miniature Circuit Breakers; Includes: (1) Steel Interlock Attachment; Brand: SQUARE D; Accessory Type: Interlock Attachment.

More from SQUARE D

View all SQUARE D parts
SQUARE D Handle Padlock Attachment, Loose: Handle Padlock Attachment, Loose (MPN QOHPL). Key specifications — For Use With: Square D QO and QOB Miniature Circuit Breakers; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment, Loose.
SQUARE D
SQUARE D Handle Padlock Attachment, Loose: Handle Padlock Attachment, Loose (MPN QOHPL). Key specifications — For Use With: Square D QO and QOB Miniature Circuit Breakers; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment, Loose.
SQUARE D Fixed Lock Off Only: Fixed Lock Off Only, Square D PowerPact(R) B Circuit Breakers (MPN LV426906). Key specifications — For Use With: Square D PowerPact(R) B Circuit Breakers; Brand: SQUARE D; Accessory Type: Fixed Lock Off Only.
SQUARE D
SQUARE D Fixed Lock Off Only: Fixed Lock Off Only, Square D PowerPact(R) B Circuit Breakers (MPN LV426906). Key specifications — For Use With: Square D PowerPact(R) B Circuit Breakers; Brand: SQUARE D; Accessory Type: Fixed Lock Off Only.
SQUARE D Handle Padlock Attachment, Fixed: Handle Padlock Attachment, Fixed (MPN QO1PL). Key specifications — For Use With: Square D QO and QOB Miniature Circuit Breakers; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment, Fixed.
SQUARE D
SQUARE D Handle Padlock Attachment, Fixed: Handle Padlock Attachment, Fixed (MPN QO1PL). Key specifications — For Use With: Square D QO and QOB Miniature Circuit Breakers; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment, Fixed.
SQUARE D Handle Padlock Attachment: Handle Padlock Attachment, Square D QOU Circuit Breakers (MPN QOU1PL). Key specifications — For Use With: Square D QOU Circuit Breakers; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment.
SQUARE D
SQUARE D Handle Padlock Attachment: Handle Padlock Attachment, Square D QOU Circuit Breakers (MPN QOU1PL). Key specifications — For Use With: Square D QOU Circuit Breakers; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment.
SQUARE D Removable Padlocking Device: Removable Padlocking Device (MPN 29370). Key specifications — For Use With: Square D PowerPact(R) B Circuit Breakers; Brand: SQUARE D; Accessory Type: Removable Padlocking Device.
SQUARE D
SQUARE D Removable Padlocking Device: Removable Padlocking Device (MPN 29370). Key specifications — For Use With: Square D PowerPact(R) B Circuit Breakers; Brand: SQUARE D; Accessory Type: Removable Padlocking Device.
SQUARE D Handle Padlock Attachment, Loose: Handle Padlock Attachment, Loose (MPN QO1HPL). Key specifications — For Use With: Square D QO and QOB Miniature Circuit Breakers; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment, Loose.
SQUARE D
SQUARE D Handle Padlock Attachment, Loose: Handle Padlock Attachment, Loose (MPN QO1HPL). Key specifications — For Use With: Square D QO and QOB Miniature Circuit Breakers; Brand: SQUARE D; Accessory Type: Handle Padlock Attachment, Loose.
SQUARE D Mechanical Interlock: Mechanical Interlock (MPN S29369). Key specifications — For Use With: Square D PowerPact(R) H and J Frame Circuit Breakers; Brand: SQUARE D; Accessory Type: Mechanical Interlock.
SQUARE D
SQUARE D Mechanical Interlock: Mechanical Interlock (MPN S29369). Key specifications — For Use With: Square D PowerPact(R) H and J Frame Circuit Breakers; Brand: SQUARE D; Accessory Type: Mechanical Interlock.
SQUARE D Handle Lockoff: Handle Lockoff, Square D QO Circuit Breakers (MPN QO1LO). Key specifications — For Use With: Square D QO Circuit Breakers; Brand: SQUARE D; Accessory Type: Handle Lockoff.
SQUARE D
SQUARE D Handle Lockoff: Handle Lockoff, Square D QO Circuit Breakers (MPN QO1LO). Key specifications — For Use With: Square D QO Circuit Breakers; Brand: SQUARE D; Accessory Type: Handle Lockoff.