Square D LHP26400MB Molded Case Circuit Breaker
- 400A
- 2 Pole
- Unit Mount
Quantity
Square D LHP26400MB - 400A 2 Pole Molded Case Circuit Breaker
New
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Description
Delivering robust power distribution, the LHP26400MB is a 400A, two-pole MCCB designed for commercial and industrial environments. It utilizes thermal-magnetic technology to provide dependable long-time and instantaneous (LI) protection. This unit-mount breaker installs into Square D switchboards, motor control centers, and enclosures. For modern facility upgrades, it is officially replaced by the LGL26400 model. Rated for 35 kAIC at 480V, this L-Frame breaker handles demanding fault currents.Specifications
| Brand | Square D |
|---|---|
| Series | LHP |
| Amperage | 400A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480Y/277VAC, 35kA @ 480VAC, 25kA @ 600Y/347VAC, 25kA @ 600VAC, 50kA @ 250VDC |
| Frame Type | L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Switchboards, Motor Control Centers, 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, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Short Handle, Push-To-Trip Mechanism |
Product FAQs
8 answersWhat does the "MB" suffix mean on the LHP26400MB catalog number?
The "MB" suffix indicates that the circuit breaker is equipped with a short handle. This design ensures that panel doors can close securely without interference in tight-clearance enclosures.
What types of equipment is the LHP26400MB compatible with?
This unit-mount circuit breaker is designed for installation in Square D switchboards, motor control centers, and industrial enclosures.
What wire sizes do the standard lugs on the LHP26400MB accept?
The lugs accept either a single 1 AWG to 600 kcmil aluminum or copper wire, or dual 1 AWG to 250 kcmil aluminum or copper wires per phase.
Is the LHP26400MB a current model or a legacy breaker?
The LHP series is a legacy L-Frame molded case circuit breaker. For modern facility upgrades, it crosses over to the current Square D PowerPact L-Frame series, specifically the LGL26400.
Can the LHP26400MB be used in DC electrical systems?
Yes, this thermal-magnetic breaker is rated for use in DC applications up to 250VDC, where it provides a 50kA interrupting capacity.
How is the LHP26400MB installed into an electrical panel?
This is a unit-mount circuit breaker that utilizes a bolt-on connection. It is designed to be hardwired and bolted into place, unlike I-Line plug-on breakers.
Are the trip settings on the LHP26400MB adjustable?
No, this breaker features fixed thermal and fixed magnetic trip settings for long-time and instantaneous (LI) overcurrent protection.
Does the LHP26400MB include a push-to-trip mechanism?
Yes, Square D L-Frame breakers feature a push-to-trip button that allows you to manually trip the breaker for mechanical testing and maintenance without exposing live parts.
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