Schneider Electric LHP36400 Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Schneider Electric
LHP36400
Molded Case Circuit Breaker
Brand
Schneider Electric
SKU
LHP36400
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Schneider Electric LHP36400 - 400A 3 Pole Molded Case Circuit Breaker
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Description
Built for demanding industrial environments, this 400-amp thermal-magnetic breaker offers fixed thermal and adjustable magnetic trip settings. The unit integrates seamlessly into Square D commercial switchboards utilizing standard lug terminals. As a traditional L-Frame component, it serves as an exact match for existing setups, bypassing the retrofit requirements of the newer LJL36400 replacements. It provides reliable LI protection with a 65kA rating at 240VAC.Specifications
| Brand | Schneider Electric |
|---|---|
| Series | LHP |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 50kA @ 250VDC |
| Frame Type | L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Switchboards, Enclosures |
| Wire Gauge | 1 AWG-600 kcmil (Al/Cu) or (2) 1 AWG-250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 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, Lug Kits |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, RoHS Compliant |
Product FAQs
5 answersCan I terminate dual conductors on the LHP36400 lugs?
Yes, the standard factory lugs on this breaker are designed to accept either a single 1 AWG to 600 kcmil conductor or dual 1 AWG to 250 kcmil conductors per phase. Both aluminum and copper wire are supported.
How is the trip unit configured on this legacy L-frame breaker?
This breaker features a thermal-magnetic trip unit with LI (Long-Time and Instantaneous) functions. The thermal overload protection is fixed at 400A, while the magnetic instantaneous trip is adjustable to help coordinate with downstream loads and prevent nuisance tripping from inrush currents.
What type of mounting does the LHP36400 require?
This is a unit-mount, bolt-on circuit breaker. It is designed to be bolted directly to the mounting pan or bus in compatible Square D switchboards and industrial enclosures, rather than plugging into an I-Line panelboard bus.
Is the LHP36400 part of the current PowerPact series?
No, the LHP36400 is a legacy Square D L-frame molded case circuit breaker. While newer PowerPact L-frame breakers are available, this specific model is often required for direct replacements in existing legacy switchboards where retrofitting a newer frame would require bus modifications.
What precautions are necessary when adjusting the magnetic trip settings?
Adjustments to the instantaneous magnetic trip dials should only be performed by a qualified electrician based on a proper coordination study. Ensure the breaker is de-energized before making adjustments to avoid arc flash hazards and ensure the new settings comply with NEC requirements for the protected circuit.
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