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Square D LHL3640030C1625 Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Square D
LHL3640030C1625
Molded Case Circuit Breaker
Brand
Square D
SKU
LHL3640030C1625
Quantity
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Square D LHL3640030C1625 - 400A 3 Pole Molded Case Circuit Breaker
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Description
Providing essential Long-Time and Instantaneous (LI) protection, this 400A molded case circuit breaker is engineered for heavy-duty commercial applications. The 3-pole unit ensures reliable power distribution and system safety. This breaker is configured for unit-mount installations within Square D L-Frame enclosures and panelboards. Facilities looking to modernize can replace this legacy unit with the LGL36400, provided the appropriate UVR and auxiliary switches are added.Specifications
| Brand | Square D |
|---|---|
| Part Number | LHL3640030C1625-R |
| Series | LHL |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 20kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D L-Frame Enclosures, Switchboards, Panelboards |
| Wire Gauge | (1) 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, Alarm Switch, Handle Padlock Attachment |
|---|---|
| Accessories | Undervoltage Release (24VDC) (Factory Installed), Auxiliary Switch (2A/2B) (Factory Installed), Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity |
Product FAQs
7 answersWhat enclosures and panels are compatible with the LHL3640030C1625 circuit breaker?
This unit-mount L-frame breaker is designed for installation in Square D L-frame enclosures, as well as compatible Square D switchboards and panelboards. It is not intended for I-Line panelboards, which require a plug-on bracket.
What size wire is accepted by the lugs on the LHL3640030C1625?
The factory-installed line and load lugs accept either one 1 AWG to 600 kcmil conductor or two 1 AWG to 250 kcmil conductors per phase. The lugs are rated for both aluminum and copper wiring.
Can the LHL3640030C1625 be used in DC applications?
Yes, this thermal-magnetic breaker is rated for use in DC systems up to 500VDC, where it provides a 20kA interrupting capacity.
Is the trip unit on the LHL3640030C1625 adjustable?
This breaker features a thermal-magnetic trip unit with a fixed thermal setting for long-time protection and an adjustable magnetic setting for instantaneous protection, allowing you to fine-tune the short-circuit trip point.
What is the difference between the LHL36400 and the LAL36400?
The LHL series is the high-interrupting version of the standard LAL series. While an LAL36400 provides 30kA at 480VAC, the LHL36400 provides a higher 35kA interrupting rating at 480VAC. They share the same physical dimensions and mounting footprint.
How is the LHL3640030C1625 mounted?
This is a unit-mount circuit breaker, meaning it is bolted directly to the mounting surface or backpan using screws, rather than plugging onto a busbar like an I-Line breaker.
Does the LHL3640030C1625 have a push-to-trip feature?
Yes, Square D L-frame breakers include a push-to-trip button on the front of the breaker. This allows you to manually trip the breaker to verify the mechanical operation of the trip mechanism without exposing yourself to live parts.
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