Eaton Series C Molded Case Cir...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$5,867.90
Eaton Series C Molded Case Circiut Breaker Standard 35kAIC

Eaton Series C Molded Case Circuit Breaker 35kAIC Standard with Fixed Thermal-Magnetic Trip

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Model: KD2150

In Stock (leaves warehouse same day if ordered before 3pm ET)

$5,867.90
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Eaton Series C Molded Case Circuit Breaker 35kAIC Standard with Fixed Thermal-Magnetic Trip

Professional electrical protection with reliable thermal-magnetic trip technology

The Eaton Series C Molded Case Circuit Breaker delivers dependable electrical protection with 35kAIC interrupting capacity and fixed thermal-magnetic trip operation. This complete breaker features aluminum terminals for line and load connections, UL Listed certification, and robust K-frame construction designed for reliable performance in commercial and industrial electrical systems.

Professional Features & Benefits

  • 35kAIC Interrupting Capacity: Provides robust fault current interruption capability for demanding electrical applications
  • Fixed Thermal-Magnetic Trip: Delivers precise overcurrent protection with reliable thermal and magnetic trip mechanisms
  • UL Listed Certification: Ensures compliance with rigorous safety and performance standards for professional installations
  • Aluminum Terminals: Offers corrosion-resistant line and load connections for long-term reliability
  • K-Frame Construction: Provides durable mechanical platform designed for consistent operation and service life
  • 600 Vac/250 Vdc Rating: Supports versatile voltage applications in both AC and DC electrical systems
  • Complete Breaker Design: Ready-to-install unit eliminates need for additional components or assembly

Technical Specifications

  • Certifications: UL Listed
  • Circuit Breaker Frame Type: Complete breaker
  • Circuit Breaker Type: KD
  • Frame: K
  • Product Details: Complete breaker
  • Product Weight: 11.5 lb
  • Series: Series C
  • Terminal Material: Aluminum
  • Terminals: Line and load
  • Trip Type: Fixed thermal, fixed magnetic
  • Voltage Rating: 600 Vac, 250 Vdc

Professional Applications

  • Commercial Building Electrical Distribution
  • Industrial Control Panels
  • Manufacturing Facility Protection
  • Data Center Power Distribution
  • Healthcare Facility Electrical Systems
  • Educational Institution Power Management
  • Retail and Office Building Protection

Why Choose Eaton Quality?

Eaton Series C molded case circuit breakers combine proven thermal-magnetic protection technology with UL Listed certification and robust K-frame construction. The aluminum terminal design and complete breaker configuration ensure reliable installation and long-term performance in professional electrical applications.

Manufacturer Resources

Product Specs

Certifications:
UL Listed
Circuit Breaker Frame Type:
Complete breaker
Circuit Breaker Type:
KD
Frame:
K
Product Details:
Complete breaker
Product Weight:
11.5 lb
Series:
Series C
Terminal Material:
Aluminum
Terminals:
Line and load
Trip Type:
Fixed thermal, fixed magnetic
Voltage Rating:
600 Vac, 250 Vdc
Department:
Electrical
Product Group:
Circuit Protection
Product Type:
Circuit Breaker
Product Subgroup:
Circuit Breakers

Eaton KD2150 – Frequently Asked Questions

1) What amperage and pole combinations does the Eaton KD-frame Series C breaker come in?
The Eaton Series C KD breaker is built in 2-pole, 3-pole, and 4-pole configurations from 100A up to 400A. Two-pole runs 100, 125, 150, 175, 200, 225, 250, 300, 350, and 400 amps (KD2125 through KD2400). Three-pole covers the same 100A to 400A span (KD3100 through KD3400). Four-pole is offered at 100, 125, 150, 175, 200, 225, 250, 300, 350, and 400 amps, with catalog numbers like KD4100, KD4125, KD4300, and KD4400. Pick the pole count off your system: 3-pole for standard three-phase feeders, 4-pole where you are switching the neutral.
2) Is 35kAIC enough for my service, and what voltage can the Eaton KD breaker be applied at?
The KD-frame Series C breaker is the 35kAIC interrupting rating, applied at 600 Vac or 250 Vdc. That covers 480Y/277V and 600V commercial and industrial distribution as long as the available fault current at that point in the system is at or below 35kA. Pull the available fault current from your utility or coordination study first. If your calculated fault duty exceeds 35kA at the breaker location, you need a higher interrupting rating in the same frame, not this one.
3) Does the Eaton KD circuit breaker have adjustable trip settings?
No. The KD-frame Series C is a fixed thermal, fixed magnetic breaker, so neither the overload nor the instantaneous pickup can be dialed in. You select protection by choosing the ampere rating of the breaker itself. If your coordination study calls for an adjustable instantaneous or an electronic trip unit, this is the wrong device for that opening in the one-line.
4) Will an Eaton KD breaker fit in a panel or switchboard built for a K-frame?
Yes, the KD is a K-frame device. Eaton panelboards, switchboards, and enclosures prepped for K-frame breakers take it, and the mounting footprint is common across the K-frame ampere range from 100A to 400A. What changes between K-frame breaker types is the interrupting rating, so confirm the equipment's series rating or fault duty accepts a 35kAIC device.
5) I need to replace an existing Eaton KD breaker, how do I order the exact match?
Read the catalog number off the face of the old breaker. Eaton's KD numbering is the type, then the pole count, then the ampere rating: KD3225 is a K-frame KD, 3-pole, 225 amps; KD2150 is 2-pole, 150 amps; KD4400 is 4-pole, 400 amps. Match that number and you have matched the frame, poles, and amperage. Also confirm the interrupting rating on the old unit, since K-frame breakers exist in more than one kAIC class and this one is the 35kAIC version.
6) Can I land copper conductors on the aluminum terminals of this Eaton KD breaker?
The KD breaker ships with aluminum terminals on both line and load. Aluminum-bodied lugs on molded case breakers are normally marked AL9CU, meaning they are listed for either copper or aluminum conductors, but the marking on the breaker and its wire range label is what governs the installation. Torque to the value printed on the breaker, and use the correct joint compound if you are landing aluminum cable.
7) Is this a complete breaker or do I have to order a trip unit and terminals separately?
It is a complete breaker. The KD-frame unit arrives assembled with its fixed thermal-magnetic trip and line and load terminals already fitted, so there is no separate trip unit, rating plug, or lug kit to specify. Mounting hardware, interior connectors, and any accessories such as auxiliary contacts or shunt trips are separate items.
8) Is the Eaton Series C KD breaker UL Listed for use in a hospital or school distribution panel?
The KD-frame Series C carries UL Listing, which is what an inspector and a facility standard will look for on a molded case breaker feeding commercial, healthcare, education, or data center distribution. Application in any specific facility still depends on the equipment it is installed in being listed for that breaker and on the available fault current staying within the 35kAIC rating.
9) Can the Eaton KD breaker be used on a 250V DC system such as a battery or UPS bank?
Yes, within its rating. The KD is rated 250 Vdc in addition to 600 Vac, so it can be applied on DC systems up to 250 volts. Manufacturers typically require a specific number of poles in series for DC applications, so follow Eaton's DC application instructions for pole connection and the DC interrupting figure that applies at that voltage.
10) How heavy is the Eaton K-frame KD breaker, and is it a one-person install?
The KD breaker is listed at 11.5 lb. That is a two-hand lift at the panel but a single electrician can set it; the practical issue is holding it square while you start the mounting hardware in an energized-adjacent gear, not the weight itself.
How fast can I get the Eaton KD2150 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 Eaton KD2150 come with a warranty?
Absolutely. The Eaton KD2150 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 Eaton KD2150?
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
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