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ABB Snap-On Circuit Breaker Handle Locking Device, TQB/TQC/TQL
The ABB Snap-On Circuit Breaker Handle Locking Device is a snap-on handle lock that secures breaker handles without requiring a separate padlock. Designed for use with TQB, TQC, and TQL circuit breakers, each kit includes a lock sized for a 1-pole breaker and a lock sized for a 2-pole breaker, giving electrical professionals a practical way to restrict access to critical circuits in panelboards and load centers. Supplied as a complete 1-Pole and 2-Pole Kit, it packages both lock sizes together for common panel configurations, arriving as 1 EA for straightforward ordering and stocking.
Key Features
- Snap-On Design: Installs directly onto the breaker handle without the need for a separate padlock, simplifying installation and removal.
- Breaker Compatibility: Accessible for use with TQB, TQC, and TQL circuit breakers.
- Complete Kit: Each kit includes a lock sized for a 1-pole breaker and a lock sized for a 2-pole breaker, covering common panel configurations.
- Configuration: Supplied as a 1-Pole and 2-Pole Kit, giving flexibility for both single and double-pole breaker positions in the same order.
- Convenient Packaging: Supplied as 1 EA for straightforward ordering and stocking.
Technical Specifications
- Configuration: 1-Pole and 2-Pole Kit
- Compatible Breakers: TQB, TQC, TQL
- Packaging: 1 EA
Typical Applications
- Panelboard and Load Center Breaker Security
- Lockout/Tagout Procedures on TQB, TQC, and TQL Breakers
- Preventing Unauthorized or Accidental Breaker Operation
- Commercial and Industrial Electrical Panels
- Maintenance and Safety Compliance Programs
Why ABB?
ABB circuit breaker accessories are engineered to work seamlessly with ABB TQB, TQC, and TQL breaker lines, giving electrical professionals a reliable way to control access to breaker handles without adding separate hardware like a padlock. Choosing an ABB handle lock designed specifically for these breaker families, and packaged as a matched 1-Pole and 2-Pole Kit, helps ensure a secure, consistent fit for panelboard safety and lockout/tagout procedures on the job site.
Manufacturer Resources
Spec Sheet
Product Specs
- Product Type:
- Breaker Handle Lock
- Configuration:
- 1-Pole and 2-Pole Kit
- Department:
- Electrical
- Product Group:
- Wiring Devices
- Product Subgroup:
- Circuit Breakers
ABB THL103 – Frequently Asked Questions
1) Will the ABB THL103 handle lock fit my breaker if it's a TQB, TQC or TQL?
Yes. The ABB THL103 snap-on handle locking device is made for TQB, TQC and TQL circuit breakers. It snaps directly onto the breaker handle in the panel. If your panel runs a different breaker family, this one is not the part for it.
2) How many locks come in the ABB THL103 kit, and what sizes?
One kit, two locks: one sized for a 1-pole breaker and one sized for a 2-pole breaker. It ships as a single EA, so ordering one gets you both sizes rather than having to pick a pole count up front.
3) Can I use the THL103 for lockout/tagout on a panelboard?
It's listed for lockout/tagout on TQB, TQC and TQL breakers, along with panelboard and load center breaker security and preventing accidental or unauthorized breaker operation. If your facility's LOTO program requires a keyed padlock and a personal lock per worker, check that against the program requirements, since this device locks the handle without a padlock.
4) I need to lock out a two-pole breaker feeding a rooftop unit. Is one THL103 kit enough?
For a single 2-pole position, yes. The kit carries a lock sized to a 2-pole breaker plus a second lock sized to a 1-pole. If you're securing several 2-pole breakers across a panel, you'll need a kit per breaker, since each kit only contains one lock of each size.
5) As a property manager, can I use these to stop tenants flipping breakers they shouldn't?
That's one of the stated uses. The THL103 restricts access to critical circuits in panelboards and load centers and prevents unauthorized or accidental breaker operation, which covers things like common-area lighting, pumps or HVAC circuits in a shared electrical room. It only works if the panel is populated with ABB TQB, TQC or TQL breakers.
6) What is the ABB part number for the snap-on TQB/TQC/TQL breaker handle lock?
THL103. That's the ABB manufacturer part number for the snap-on handle locking device covering TQB, TQC and TQL breakers, supplied as a matched 1-pole and 2-pole kit.
How fast can I get the ABB THL103 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the ABB THL103 come with a warranty?
Absolutely. The ABB THL103 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the ABB THL103?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the ABB THL103 from ZenSupply?
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