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Manufacturer Resources
Spec Sheet
Product Specs
- Amperage Rating:
- 350A
- Frame Size:
- K-frame
- Number Of Poles:
- Three-pole
- Series:
- Series C
- Trip Type:
- Thermal magnetic
- Department:
- Electrical
- Product Length:
- 7 IN
- Product Height:
- 5.4 IN
- Product Weight:
- 1.9 LB
- Product Width:
- 4.4 IN
B-LINE KT3350T – Frequently Asked Questions
1) What amp rating and frame size is the Eaton KT3350T trip unit?
The KT3350T is a 350 amp, K-frame Series C trip unit. Frame size is the first thing to match: a K-frame trip unit only goes into a K-frame molded case breaker, so if the breaker in your panel is an F-frame or L-frame, this is the wrong part regardless of the amp rating you need.
2) Is the KT3350T a three-pole unit, or will it work on a two-pole breaker?
Three-pole. The KT3350T is built for a three-pole K-frame Series C breaker, so it is not the part for a two-pole application. If you are servicing a two-pole breaker you need the two-pole trip unit for that frame instead.
3) Does the KT3350T come as a complete circuit breaker?
No. This is the trip unit for an Eaton Series C molded case breaker, not a breaker assembly, so there is no frame, no terminals and no line or load connections in the box. If you are replacing a failed breaker outright rather than re-rating or repairing an existing K-frame, you need the complete 350A three-pole K-frame breaker instead.
4) How much room do I need in the enclosure for a KT3350T trip unit?
Plan for a 7 x 5.4 x 4.4 inch part at 1.9 pounds. That is small enough for one electrician to handle overhead on a ladder without a helper, but check the gutter space in the panel or switchboard cell before you start, since the trip unit sits on the breaker and adds to its overall footprint.
5) What exact part number should I put on the purchase order for a 350A K-frame Series C trip unit?
Order by MPN KT3350T. In Eaton's Series C nomenclature the rating is carried in the number itself, so a facilities or MRO buyer standardizing spares can read 350 amps straight off the part number and stock it against every three-pole K-frame breaker at that rating in the building.
How fast can I get the B-LINE KT3350T delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 B-LINE KT3350T come with a warranty?
Absolutely. The B-LINE KT3350T 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 B-LINE KT3350T?
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selection,
installation tips, and troubleshooting. Contact Us
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