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Square D LHL36350 Molded Case Circuit Breaker

  • 350A
  • 3 Pole
  • Unit Mount
Square D LHL36350
Molded Case Circuit Breaker
Brand Square D
SKU LHL36350
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  • 350A
  • 3 Pole
  • Unit Mount

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LHL36350

Square D LHL36350 - 350A 3 Pole Molded Case Circuit Breaker

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$4,140.74 In Stock

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Description

Handling higher current demands in commercial facilities, the LHL36350 is a 350A molded case circuit breaker featuring adjustable magnetic trip settings. This L-Frame device installs into legacy Square D switchboards and industrial panelboards requiring a unit-mount connection. Often replaced by the adjustable LGL36400 in modern setups, this specific model is critical for maintaining older infrastructure without extensive retrofitting. It provides 65kAIC interrupting capacity at 240VAC.

Specifications

Key specifications
Brand Square D
Part Number LHL36350
Series LHL
Amperage 350A
Poles 3
Mounting Style Unit Mount
Voltage 240VAC, 480VAC, 600VAC, 250VDC
Phase 3
AIC Rating 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 50kA @ 250VDC
Fit and installation
Frame Type LHL
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
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Adjustable Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Handle Padlock Attachment
Accessories Lugs (AL400LA)
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

6 answers
What enclosures and panels are compatible with the LHL36350?

This unit mount breaker is designed for legacy Square D L-Frame enclosures, switchboards, and industrial panelboards.

What is the adjustable magnetic trip range for this breaker?

The LHL36350 features a fixed thermal and adjustable magnetic trip unit with a magnetic hold current of 1750A and a maximum trip setting of 3500A.

Can the Square D LHL36350 be reverse fed?

Yes. Because this thermal magnetic breaker does not have specific line and load markings, it can be reverse fed for supply side applications.

What wire sizes are accepted by the standard lugs?

The standard lugs accommodate either one 1 AWG to 600 kcmil wire or two 1 AWG to 250 kcmil wires per phase, and are rated for both aluminum and copper conductors.

What is the modern replacement for the legacy LHL series?

The LHL series is a legacy L-Frame breaker. In modern electrical systems, it is typically replaced by the Square D PowerPact L-Frame series, though exact retrofitting requirements and dimensions may vary.

What safety and performance standards does this breaker meet?

This breaker is HACR rated and meets UL 489, CSA C22.2 No. 5, NEMA AB 1, and IEC 60947-2 standards for commercial and industrial applications.

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