HLO1 - Lock Off Device Description
HLO1 - Lock Off Device
The Square D HLO1 is a practical handle lock-off attachment for 1-pole QO circuit breakers. It clamps onto the breaker and allows the handle to be secured in the OFF position with a padlock, helping prevent the circuit from being switched back on when it needs to remain off. If you're replacing an existing lock-off or need the correct accessory for a compatible single-pole QO breaker, HLO1 provides a purpose-built solution without unnecessary complexity. Its compact size also makes it easy to keep with electrical service tools or maintenance supplies. The HLO1 is classified as a standard circuit breaker clamp accessory, is manufactured in Mexico, and is TAA compliant. For the right fit, always confirm the breaker family and pole configuration before installation.
Key Features and Benefits
- Designed for 1-pole QO breakers – Made specifically for use with compatible single-pole QO circuit breakers.
- Locks the breaker in the OFF position – Accepts a padlock to help prevent the breaker handle from being switched on.
- Simple clamp-style design – A straightforward solution when a compatible breaker needs a handle lock-off attachment.
- Compact and easy to keep on hand – Small enough for an electrician's toolbox, maintenance cart, or electrical parts inventory.
- Easy to identify – Catalog number HLO1 makes matching an existing part or confirming the required accessory simpler.
- TAA compliant – Meets the manufacturer's stated TAA compliance designation.
Technical Specifications
-
Catalog Number: HLO1
-
Product Type: Clamp
-
Product Family / Trade Name: QO
-
Application: Circuit breaker handle lock-off
-
Circuit Breaker Type: Standard
-
Pole Configuration: 1-Pole
-
Padlock Attachment: Yes
-
GTIN: 785901440123
-
Package Quantity: 1
-
Package Height: 0.700 in. (1.778 cm)
-
Package Width: 3.100 in. (7.874 cm)
-
Package Length: 4.500 in. (11.430 cm)
-
Package Weight: 0.560 oz. (15.876 g)
-
Country of Origin: Mexico
=Material Compliance and Certifications
The HLO1 QO handle lock-off accessory is TAA compliant. The manufacturer's specifications list Mexico as the country of origin and provide an 18-month warranty.
Where It Works Best
The HLO1 is a good fit for electrical panels using compatible 1-pole QO circuit breakers where the breaker needs to remain secured in the OFF position. Typical applications may include commercial facilities, industrial equipment, building maintenance, electrical service work, and other installations where controlled breaker operation is important.
Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.
Square D® is a registered trademark of Schneider Electric. Products sold are surplus, used, or refurbished and are NOT supplied by Schneider Electric or its affiliates.
Specifications
- Depth:0.5
- Height:0.5
- Width:0.5
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
FREE ground shipping on breaker orders over $100 and all other items with orders over $500.
Shipping charges are Prepaid and Allowed on UPS Ground orders for all other products on orders over $500.00, again only when shipping within the lower 48 continental United States, provided the product(s) can safely ship UPS Ground.
If the product cannot safely ship via UPS Ground, or is too heavy to ship UPS Ground, then the product will be shipped via freightliner at buyer's expense.
CIRCUIT BREAKER SUPERSTORE® offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).
Same Day Shipping
We strive to ship out your items within one business day.
In rare circumstances, CIRCUIT BREAKER SUPERSTORE® may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.
CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).