What are the specs for this Limit Switch?

The correct replacement for Bryant model Model 340MAV036040AAKA is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Bryant equipment which lists the model number Model 340MAV036040AAKA.

What symptoms indicate I need a new limit switch?

Common symptoms that indicate you need a new limit switch include unusual noises, intermittent operation, complete failure to operate, or visible damage. For specific diagnostic guidance, visit nationalhvacparts.com/pages/hvac-diagnostic.

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Bryant

Bryant Limit Switch HH12ZB280 for Model 340MAV036040AAKA

Name: Bryant Limit Switch HH12ZB280 for Model 340MAV036040AAKA
Brand: Bryant
SKU: BRYANT-340MAV036040AAKA-HH12ZB280
Price: 44.95 USD
Availability: InStock

SKU: BRYANT-340MAV036040AAKA-HH12ZB280 Brand: Bryant

$44.95

Market price $52.88

SAVE $7.93 (15%) vs market

Genuine Bryant OEM part · Guaranteed to fit your unit

✓ Guaranteed to fit 340MAV036040AAKA — or your money back. Terms

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Genuine OEM Bryant limit switch, part HH12ZB280 — the factory-exact replacement for the 340MAV036040AAKA. Fitment guaranteed — free returns if it doesn't fit.

Specifications

Open Temp F	280
Reset Type	auto
Type	snap-disc auto-reset high limit, 3 inch
Manufacturer	Carrier
Brand	Carrier
Replaces	L280F-40, 1NT23L-3653
Note	Open/cutout 280F (L280F-40). Digits after ZB encode open temp, consistent with series. Auto-reset per 'Auto Limit Switch' family naming. Marketplace (Amazon/Walmart) used only as secondary confirmation of L-number/1NT23L cross.
OEM Part Number	HH12ZB280
Brand	Bryant
Condition	New — genuine OEM

Symptoms of a failing limit switch

Watch for: Error codes tracing to this component, the system short-cycles or locks out, performance that degrades under load. Catching it early protects the components around it.

Replacement guide

Swap the part, torque fasteners evenly, and route wires away from hot or moving surfaces. Run a complete cycle and verify normal operation before closing the panel.

FAQ

Is this the exact OEM part for my 340MAV036040AAKA? Yes — verified factory fitment for that model.

Not sure of your model? Chat with Mike with the number from your unit's nameplate and we'll confirm before you order.

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $99
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

Bryant Limit Switch HH12ZB280 fo...

$44.95

Frequently Asked Questions

Does this Limit Switch fit my Bryant Model 340MAV036040AAKA?

Yes. This is the factory-specified OEM limit switch for the Bryant Model 340MAV036040AAKA. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the limit switch on my Bryant Model 340MAV036040AAKA?

Refer to your equipment service manual for model-specific steps. General approach: turn off power, photograph connections, remove old part, install new part, restore power and test. For gas components, hire a licensed technician. Email info@nationalhvacparts.com for guidance.

What symptoms mean I need a new limit switch?

Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.

Is this limit switch compatible with Bryant or Payne too?

Many Bryant parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Bryant limit switch?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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