Eaton / Westinghouse MA2600 Molded Case Circuit Breaker
- 600A
- 2 Pole
- Bolt-On
Quantity
Eaton / Westinghouse MA2600 - 600A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Built for commercial and industrial environments, the Eaton MA2600 is a 600A, two-pole molded case circuit breaker. It provides robust thermal-magnetic protection for 600VAC and 250VDC electrical systems. This legacy bolt-on breaker mounts into Westinghouse PRL4 panelboards, switchboards, and motor control centers. It is an ideal exact-fit replacement for aging infrastructure and can be substituted by the MDL2600. Equipped with an interchangeable trip unit, it features a 42kAIC rating at 240V.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | MA2600-R |
| Series | MA |
| Amperage | 600A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | MA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Westinghouse PRL4 Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (2) 3/0 AWG - 350 kcmil (Al/Cu) |
| Max Wire | 350 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 | 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
7 answersWhat enclosures or panelboards are compatible with the MA2600?
This bolt-on circuit breaker is designed for use in Westinghouse PRL4 panelboards, switchboards, and motor control centers.
Is the Westinghouse MA2600 the same as the Eaton MA2600?
Yes. Eaton acquired the Westinghouse distribution equipment division, so the MA2600 may be branded as Eaton, Cutler-Hammer, or Westinghouse. They are physically and electrically identical.
What is the modern replacement for the legacy MA2600?
The Eaton Series C MDL2600 is the direct modern replacement for the legacy M-Frame MA2600 circuit breaker.
What wire sizes are accepted by the lugs on this breaker?
The standard lugs accept two wires per phase, ranging from 3/0 AWG to 350 kcmil for both aluminum and copper conductors.
Can the MA2600 be used in DC electrical systems?
Yes, it is rated for up to 250VDC with an interrupting capacity of 10kAIC, making it suitable for specific direct current applications in addition to standard AC systems.
How is the trip unit adjusted on the MA2600?
This breaker features a thermal-magnetic trip unit with a fixed thermal setting for overload protection and an adjustable magnetic setting for short-circuit protection. The magnetic trip can be adjusted using the dials on the front face of the breaker.
What does the LI trip function code indicate on this breaker?
The LI designation means the trip unit provides Long-Time thermal protection against overloads and Instantaneous magnetic protection against short circuits.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- DHDave H.ReviewingSquare D MA36600 - 600A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/6/25Never had a problem
We like the service and the prices. The re-certified are great for projects that we have in house.