Eaton / Cutler-Hammer LSB360400E Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Quantity
Eaton / Cutler-Hammer LSB360400E - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Serving as an exact replacement for LD3400 and HLD3400 units, this 400A electronic trip breaker ensures reliable power distribution. It integrates seamlessly into Eaton, legacy Westinghouse, and Thomas & Betts panelboards requiring an L-Frame footprint. The integrated Seltronic trip unit features Long-Time and Instantaneous (LI) sensing, allowing for precise coordination across complex electrical systems. Rated at 35kAIC at 480V, it includes the necessary rating plug and TA400LE lug kit.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | LSB360400E-R |
| Series | LSB |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 22kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton / Cutler-Hammer Panelboards, Legacy Westinghouse Panelboards, Thomas & Betts Panelboards |
| Wire Gauge | 3/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Lug Kits |
|---|---|
| Accessories | Lug Kit (TA400LE) |
| Standards | CSA C22.2 No. 5.1, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Reverse Feed |
Product FAQs
7 answersCan the LSB360400E replace older LD or HLD frame circuit breakers?
Yes. Because it shares the standard Series C L-Frame footprint, the LSB360400E serves as a direct physical replacement for legacy LD3400 and HLD3400 breakers in existing enclosures.
What protection functions does the electronic trip unit provide?
The integrated electronic trip unit features Long-Time and Instantaneous (LI) sensing. This allows for fixed thermal protection and adjustable magnetic trip settings to coordinate with other devices in your electrical system.
What wire gauge is accepted by the terminals on this breaker?
The standard lug terminals accommodate aluminum or copper (Al/Cu) conductors ranging from 3/0 AWG to 500 kcmil.
Which panelboards accept this L-Frame breaker?
This unit-mount breaker is compatible with Eaton, Cutler-Hammer, legacy Westinghouse, and Thomas & Betts panelboards configured for Series C L-Frame devices.
Can this breaker be used in DC electrical systems?
Yes, the LSB360400E is rated for 250VDC systems and provides a 22kA interrupting capacity for direct current applications, in addition to its standard AC ratings.
Does this breaker plug onto the busbar or bolt into place?
The LSB360400E is a unit-mount circuit breaker, meaning it must be bolted directly to the panelboard chassis or mounting pan rather than plugging onto a busbar.
What safety precautions are required when installing the LSB360400E?
Installation should only be performed by a qualified electrical professional. Always verify that no voltage is present and that the power source is completely de-energized before mounting the breaker or connecting conductors.
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