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Manufacturer Resources
Spec Sheet
Product Specs
- Amperage Rating:
- 100A
- Frame Size:
- K-frame
- Number Of Poles:
- Three-pole
- Series:
- Series C
- Trip Type:
- Thermal magnetic
- Department:
- Electrical
- Product Length:
- 6.9 IN
- Product Height:
- 4.2 IN
- Product Weight:
- 1.8 LB
- Product Width:
- 5.3 IN
B-LINE KT3100T – Frequently Asked Questions
1) What amperage and pole configuration is the Eaton KT3100T trip unit?
The KT3100T is a 100 amp, three-pole trip unit for Eaton Series C K-frame molded case breakers. If your breaker frame is not a K-frame, this unit will not mount.
2) Is the KT3100T a thermal magnetic or an adjustable electronic trip?
Trip type on the KT3100T is thermal magnetic. That means the overload response comes from a bimetal element and the short circuit response from a magnetic element, rather than from adjustable current sensing settings. If your drawing calls for adjustable long time, short time and instantaneous pickup, a thermal magnetic unit will not satisfy it.
3) Will a KT3100T work as a replacement for a 100 amp K-frame breaker trip unit on an older panel?
It matches a Series C K-frame three-pole assembly at 100 amps. Series C is Eaton's own designation, so the breaker you are replacing into needs to be a Series C K-frame, not an earlier frame family that happens to be 100 amps. Confirm the frame marking on the existing breaker rather than going by amperage alone.
4) How much space do I need in the panel for a KT3100T trip unit?
Physical size is 6.9 inches long by 5.3 inches wide by 4.2 inches high, and it weighs 1.8 pounds. Use those numbers against the gutter and wireway clearance in your enclosure before you commit.
5) What is the exact part number to order for the 100 amp Eaton Series C K-frame trip unit?
Order by manufacturer part number KT3100T. The K in the designation follows the K-frame, and the 100 is the amp rating, so a KT3 unit with a different number is a different current rating on the same frame.
6) Does the KT3100T cover a single-phase two-pole application?
No. It is built as a three-pole unit, so it suits three-phase feeders and branch circuits. For a two-pole single-phase application you need a two-pole trip unit on the same frame instead.
7) Where do I find the full electrical specs, like interrupting rating, for the KT3100T?
Eaton publishes a spec sheet for the KT3100T, and it is the document to check for interrupting ratings and voltage ratings on your specific application. From the catalog data, what is fixed is the 100 amp rating, three poles, K-frame, and a thermal magnetic trip.
How fast can I get the B-LINE KT3100T delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 B-LINE KT3100T come with a warranty?
Absolutely. The B-LINE KT3100T 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 KT3100T?
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