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Square D LAP36350MB Circuit Breaker
- 350
- 3 Pole
- Unit
Square D
LAP36350MB
Circuit Breaker
Brand
Square D
SKU
LAP36350MB
Quantity
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Square D LAP36350MB 3 Pole Circuit Breaker
Re-Certified
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Square D LAP36350MB 3 Pole Circuit Breaker
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| Brand | Square D |
|---|---|
| Part Number | LAP36350MB |
| Series | LA |
| Amperage | 350 A |
| Poles | 3 |
| Mounting Style | Unit |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | LAL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Switchboards, Motor Control Centers, Control Panels |
| 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, Padlock Attachment |
|---|---|
| Accessories | Short Handle |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Short Handle |
Quantity
Square D LAP36350MB 3 Pole Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Series | LA |
| Amperage | 350 A |
| Poles | 3 |
| Mounting Style | Unit |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | LAL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Switchboards, Motor Control Centers, Control Panels |
| 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, Padlock Attachment |
|---|---|
| Accessories | Short Handle |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Short Handle |
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Description
Square D LAP36350MB 3 Pole Circuit Breaker
The Square D LAP36350MB is a 3 Pole thermal magnetic molded case circuit breaker with a current rating of 350 Amps and a voltage rating of 600VAC. It has an interrupting rating of 30kAIC at 480V. The LAP36350MB has a bolt-on connection type and includes long time and instantaneous trip functions.
Specifications
| Brand | Square D |
|---|---|
| Series | LA |
| Amperage | 350 A |
| Poles | 3 |
| Mounting Style | Unit |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | LAL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Switchboards, Motor Control Centers, Control Panels |
| 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, Padlock Attachment |
|---|---|
| Accessories | Short Handle |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Short Handle |
Product FAQs
6 answersWhat does the "MB" suffix indicate on the LAP36350MB circuit breaker?
The "MB" suffix designates a short handle operator. This specialized actuator allows panel doors to close securely without interference in tight enclosures.
What is the modern replacement series for legacy Square D LA-frame breakers?
Legacy LA-frame breakers like the LAP36350MB cross over to the modern Square D PowerPacT L-Frame series. You will need to verify your specific panel mounting and interrupting capacity requirements before upgrading.
What wire sizes and materials are compatible with the lugs on this breaker?
The line and load lugs accept either a single 1 AWG to 600 kcmil wire or two 1 AWG to 250 kcmil wires per phase. Both aluminum and copper conductors are supported.
What equipment is the LAP36350MB designed to be installed in?
This unit-mount, bolt-on circuit breaker is designed for installation in Square D switchboards, motor control centers, and industrial control panels.
How does the trip unit function on this 350A breaker?
It utilizes a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection.
How can I manually test the mechanical operation of the LAP36350MB?
The breaker features a push-to-trip button that allows you to manually trip the mechanism for testing and maintenance without exposure to live electrical parts.
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