Eaton / Westinghouse KL3400 Molded Case Circuit Breaker
- 400A
- 3 Pole
- Panel Mount
Quantity
Eaton / Westinghouse KL3400 - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Providing a critical replacement solution, the Eaton KL3400 is a 3-pole, 400A molded case circuit breaker that keeps aging infrastructure online safely. The unit mounts into legacy Westinghouse Pow-R-Line panelboards and MCCs. As the predecessor to the modern KD3400, it eliminates the need for complex retrofitting. It features fixed thermal-magnetic trip elements for standard LI protection. Rated at 22kAIC at 480VAC, it offers robust fault clearing for legacy equipment.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | KL3400-R |
| Series | KL |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 22kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse Pow-R-Line Panelboards, Switchboards, Motor Control Centers |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included, Current Limiters |
| Standards | NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
Product FAQs
5 answersWhat panelboards are compatible with the KL3400 circuit breaker?
This K-frame breaker is designed to mount directly into legacy Westinghouse Pow-R-Line panelboards, switchboards, and motor control centers.
Can the KL3400 replace older Westinghouse K-frame breakers?
Yes, it serves as a direct drop-in replacement for aging Westinghouse K-frame units in existing infrastructure. It is the predecessor to the modern KD3400, allowing you to maintain legacy systems without complex retrofitting.
Which lug kit is required for terminating conductors on the KL3400?
You can use standard Eaton Series C K-frame lug kits, such as the 3TA400K. This specific 3-pole kit accepts two #3/0 AWG to 250 kcmil copper or aluminum conductors per phase.
Does the KL3400 offer adjustable trip settings for coordination?
No, this model features fixed thermal and fixed magnetic trip elements. It provides standard long-time and instantaneous protection without field adjustability.
What are the primary safety considerations when installing this K-frame breaker?
Ensure the panelboard is fully de-energized and locked out before installation. Electricians must also verify that the available fault current at the installation point does not exceed the breaker's maximum interrupting capacity for the specific system voltage.
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