Eaton / Westinghouse LB2400 Molded Case Circuit Breaker
- 400A
- 2 Pole
- Bolt-On
Quantity
Eaton / Westinghouse LB2400 - 400A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Part of the legacy L-Frame series, the Eaton LB2400 is a 2-pole, 400A molded case circuit breaker built for commercial and industrial distribution. Designed as an exact drop-in replacement, this bolt-on breaker mounts into older Westinghouse panelboards and motor control centers. Using this original hardware avoids the need to retrofit panels with the newer LD2400 substitute. Rated at 42kAIC at 240VAC, it features an interchangeable trip unit with adjustable magnetic settings.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | LB2400-R |
| Series | LB |
| Amperage | 400A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 20kA @ 250VDC |
| Frame Type | LB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Westinghouse Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (2) 3/0 AWG - 250 kcmil |
| Max Wire | 250 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Product FAQs
6 answersWhat wire size is accepted by the load side lugs on the LB2400?
The standard load lugs accept two conductors ranging from 3/0 AWG to 250 kcmil.
Which equipment is compatible with the LB frame LB2400 breaker?
This bolt-on breaker is designed for use in legacy Westinghouse panelboards, switchboards, and motor control centers.
Does the LB2400 feature an adjustable trip setting?
Yes, it utilizes a thermal-magnetic trip unit with a fixed thermal element and an adjustable magnetic instantaneous trip.
Can the trip unit on the LB2400 be replaced or changed?
Yes, this breaker features an interchangeable trip unit design, allowing you to swap the trip unit without replacing the entire breaker frame.
Why might my LB2400 breaker have an Eaton or Cutler-Hammer label?
Eaton acquired the Westinghouse electrical distribution business. LB frame breakers are functionally identical whether branded as Westinghouse, Cutler-Hammer, or Eaton.
Is the LB2400 suitable for direct current applications?
Yes, it is rated for use in DC systems up to 250VDC, providing a 20kA interrupting capacity at that voltage.
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Reviews
Review summary
Customers rate this product 4.5 out of 5 based on 2 reviews.
- KMKaren M.ReviewingEaton / Westinghouse LB3200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/29/22Great Resource
The website is easy to use and the shipping is very quick will continue to use SuperBreakers
- RRRashida R.ReviewingCutler-Hammer / Westinghouse LB3400F FrameI recommend this productRated 4 out of 5 stars6/18/17Purchase of CH LB3400F
Circuit breaker was shipped in very timely manner. Tracking # was correct.