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.
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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Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.