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General Electric TEYF340 Circuit Breaker

  • 40A
  • 3 Pole
  • Bolt-On
General Electric TEYF340
Circuit Breaker
Brand General Electric
SKU TEYF340
Select Item Condition
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  • 40A
  • 3 Pole
  • Bolt-On

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General Electric TEYF340 3 Pole Circuit Breaker

General Electric TEYF340 3 Pole Circuit Breaker

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$435.30 In Stock

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Description

General Electric TEYF340 3 Pole Circuit Breaker

The General Electric TEYF340 is a 3 Pole thermal magnetic molded case circuit breaker with a current rating of 40 Amps and a voltage rating of 277/480V. It has an interrupting rating of 18kAIC at 480V. The TEYF340 has a bolt-on connection type and includes long time and instantaneous trip functions.

Specifications

Key specifications
Brand General Electric
Part Number TEYF340
Series TEYF
Amperage 40A
Poles 3
Mounting Style Bolt-On
Voltage 240VAC, 277VAC, 480Y/277VAC, 250VDC, 120/240VAC
Phase 3
AIC Rating 65kA @ 240VAC, 18kA @ 277VAC, 18kA @ 480Y/277VAC, 10kA @ 250VDC, 65kA @ 120/240VAC
Fit and installation
Frame Type TEY
Terminal Type Lugs
For Use With GE A-Series Lighting Panelboards
Wire Gauge 10-4 AWG (Cu/Al)
Max Wire 4 AWG
Min Wire 10 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Standards and features
Available Options Handle Lock, Padlock Attachment
Accessories Load Side Lugs Included
Standards CSA C22.2 No. 5.1, UL 489
Approval CSA, HACR, HID, UL
Temp Rating 40C
Construction Features HACR Rated, HID Rated, Quick-Make/Quick-Break, Common Trip, Non-Interchangeable Trip

Product FAQs

6 answers
Which panelboards are compatible with the TEYF340 circuit breaker?

This bolt-on breaker is designed specifically for use in GE A-Series lighting panelboards. It can also be used in unit-mount or lug-to-lug applications when paired with the appropriate TEY3B mounting base.

What is the difference between the GE TEY340 and the TEYF340?

Both are 40A, 3-pole breakers with identical physical dimensions, but they differ in their interrupting capacity. The standard TEY340 is rated for 14kA at 480/277V AC, while the TEYF340 offers a higher short-circuit rating of 18kA at 480/277V AC.

Can the TEYF340 breaker be reverse fed?

Yes, the TEYF340 is suitable for reverse feed applications. It does not have line and load restrictions, allowing power to be supplied from either direction.

Can the TEYF340 be used in DC electrical systems?

Yes, this thermal-magnetic breaker is rated for use in DC applications up to 250V DC, with an interrupting capacity of 10kA.

What wire sizes are accepted by the lugs on the TEYF340?

The factory-installed lugs on this breaker accept 10 AWG to 4 AWG copper or aluminum conductors.

Is the TEYF340 HACR rated?

Yes, this breaker carries an HACR special marking, meaning it is approved for use with heating, air conditioning, and refrigeration equipment.

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Reviews

5.0
Rated 5.0 out of 5 stars
Based on 2 reviews
Total 5 star reviews: 2
Total 4 star reviews: 0
Total 3 star reviews: 0
Total 2 star reviews: 0
Total 1 star reviews: 0
Rating
Ratings
2 reviews
  • AC
    Alice C.
    Verified Buyer
    Reviewing
    ABB / General Electric TEYF350 - 50A 3 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/17/26
    NA

    NA

  • MN
    Maxam N. A. I.
    Verified Buyer
    Reviewing
    ABB / General Electric TEYF370 - 70A 3 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    8/4/25
    Best Pricing

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