You may also like
Manufacturer Resources
Spec Sheet
Product Specs
- Amperage Rating:
- 250A
- Circuit Breaker Frame Type:
- Complete breaker
- Circuit Breaker Type:
- E2KM
- Class:
- Mining
- Frame:
- K-frame
- Interrupt Rating:
- 65 kAIC at 240 Vac, 35 kAIC at 480 Vac, 25 kAIC at 600 Vac, 10 kAIC at 1000Y/577 Vac, 10 kAIC at 250 Vdc
- Number Of Poles:
- Three-pole
- Terminals:
- Without terminals
- Trip Rating:
- 1750-3500A
- Trip Type:
- Interchangeable thermal-magnetic
- Voltage Rating:
- 1000Y/577 Vac, 250 Vdc
- Department:
- Electrical
- Product Length:
- 12 IN
- Product Height:
- 6.75 IN
- Product Weight:
- 10.94 LB
- Product Width:
- 6.75 IN
B-LINE E2KM3250W – Frequently Asked Questions
1) What voltage can the Eaton E2KM3250W mining breaker be applied at?
It is rated to 1000Y/577 Vac and 250 Vdc, which is what makes it usable on the higher-voltage distribution common in mining power centers rather than only standard 480V gear. Interrupting capacity drops as voltage climbs: 65 kAIC at 240 Vac, 35 kAIC at 480 Vac, 25 kAIC at 600 Vac, and 10 kAIC at both 1000Y/577 Vac and 250 Vdc. Check your available fault current at the point of application against the figure for your system voltage, not the headline 65 kAIC.
2) Is the E2KM3250W a complete breaker or just a frame I have to add a trip unit to?
Complete breaker. The E2KM3250W is supplied as a full K-frame assembly with the trip unit in place, so you are not buying a bare frame. The trip is an interchangeable thermal-magnetic type, meaning the unit can be changed out later if the load calculation moves.
3) What is the instantaneous trip range on the 250A E2KM mining breaker?
The magnetic trip is adjustable from 1750A to 3500A, or roughly 7x to 14x the 250A continuous rating. That range lets you set above motor inrush on a large mining load without giving up short-circuit protection. The thermal-magnetic trip unit is interchangeable if you need a different continuous rating in the same frame.
4) How much room do I need in the enclosure for an Eaton E2KM3250W?
Plan for a 12 inch by 6.75 inch by 6.75 inch envelope plus your lug and wire bending space, since the breaker arrives without terminals. It weighs 10.94 lb, light enough for one person to mount but heavy enough that you want the panel backplate properly supported.
5) What makes this a mining breaker instead of a standard molded case breaker?
The E2KM3250W is classed as a mining breaker in the E2KM family, built for the 1000Y/577 Vac and 250 Vdc distribution used in mine power centers rather than typical 480V commercial service. If your application is ordinary building distribution at 480V or below, a standard K-frame molded case breaker is the closer match; the mining designation matters when the system voltage or the DC requirement goes beyond what general-purpose gear covers.
6) Can I use the E2KM3250W on a DC circuit?
Yes, up to 250 Vdc, with 10 kAIC interrupting capacity on DC. Three poles are available, which is what you need for series-connected pole arrangements on DC applications. Confirm your DC fault current stays within 10 kAIC.
7) What is the exact part number to order this 250A Eaton mining breaker?
Order Eaton part number E2KM3250W. That designation covers the complete three-pole 250A K-frame mining breaker with the interchangeable thermal-magnetic trip and no terminals included.
How fast can I get the B-LINE E2KM3250W delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
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 E2KM3250W come with a warranty?
Absolutely. The B-LINE E2KM3250W 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 E2KM3250W?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the B-LINE E2KM3250W from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.