Skip to main content
Expedited shipping available at checkout

Square D HLL36100U31X Molded Case Circuit Breaker

  • 100A
  • 3 Pole
  • Unit Mount
Square D HLL36100U31X
Molded Case Circuit Breaker
Brand Square D
SKU HLL36100U31X
Select Item Condition
Earn 4872 SuperPoints
  • 100A
  • 3 Pole
  • Unit Mount

Quantity

Bulk Pricing
Send your parts list for a volume quote.

Square D HLL36100U31X - 100A 3 Pole Molded Case Circuit Breaker

New

$4,872.00 In Stock

Quantity

Description

Built for long-time and instantaneous circuit protection, the Square D HLL36100U31X molded case circuit breaker is rated 100A, 600VAC and 3 poles. Interrupting ratings are 125kA at 240VAC, 100kA at 480VAC and 50kA at 600VAC. The PowerPacT H-frame design uses unit mounting and lug terminals. Its MicroLogic 3.2 electronic trip adjusts from 50-100A. Approvals include CE, CSA, IEC, NOM, UKCA and UL.

Specifications

Key specifications
Brand Square D
Part Number HLL36100U31X
Series HLL
Amperage 100A
Poles 3
Mounting Style Unit Mount
Voltage 240VAC, 480VAC, 600VAC
Phase 3
AIC Rating 125kA @ 240VAC, 100kA @ 480VAC, 50kA @ 600VAC
Electrical ratings
Amperage Range 50-100A
Fit and installation
Frame Type H
Terminal Type Lugs
Wire Gauge 14-3/0 AWG (Cu/Al)
Max Wire 3/0 AWG
Min Wire 14 AWG
Protection and operation
Trip Technology Electronic Trip
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Adjustable
Trip Unit Model MicroLogic 3.2
Standards and features
Available Options Alarm Switch, Auxiliary Switch, Motor Operator, Padlock Attachment, Rotary Handle, Shunt Trip, Undervoltage Release
Accessories Lugs
Standards CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489
Approval CE, CSA, IEC, NOM, UKCA, UL
Temp Rating -25C to 70C
Construction Features HACR Rated, Current Limiting

Product FAQs

9 answers
Can I adjust the current setting on the Square D HLL36100U31X?

This 100A breaker has an adjustable trip range of 50-100A. Use that range to select a setting appropriate for the load and conductor protection requirements.

What protection does the MicroLogic 3.2 electronic trip provide?

The MicroLogic 3.2 electronic trip provides long-time and instantaneous protection, coded LI. Long-time protection responds to sustained overloads, while instantaneous protection responds to high-current faults without an intentional delay.

How do I select this breaker for the available fault current?

Its interrupting ratings are 125kA at 240VAC, 100kA at 480VAC, and 50kA at 600VAC. Compare the available fault current at the installation point with the rating applicable to the circuit voltage.

What conductor sizes and materials can the lug terminals accept?

The lug terminals accept copper or aluminum conductors from 14 AWG through 3/0 AWG. Select a conductor within that terminal range with ampacity appropriate for the circuit and protection setting.

What mounting style and dimensions should I plan around?

This H-frame breaker uses unit mounting and measures 4.09 in wide, 6.40 in high, and 3.40 in deep. Use these dimensions when planning the mounting layout and physical space.

What temperature range should I consider for installation?

The temperature rating is -25C to 70C. Consider the temperature at the breaker location when selecting the installation environment.

What does the current-limiting feature mean for fault protection?

Current limiting reduces the peak current and energy let through during a short circuit in its current-limiting operating range. Consider this feature when evaluating fault protection, together with the interrupting rating at the circuit voltage.

What does the HACR rating mean when selecting this breaker?

HACR means heating, air conditioning, and refrigeration. This rating is relevant when selecting overcurrent protection for that equipment; match the breaker selection to the equipment's electrical requirements.

How does the 600VAC rating guide breaker selection?

The Square D HLL36100U31X has a maximum rated voltage of 600VAC. Use this as the AC voltage ceiling when selecting the breaker for the circuit's operating voltage.

SuperClub

Join free. Get 500 SuperPoints.

Earn points on eligible purchases and redeem them at checkout.

100 SuperPoints = $1 off.

Warranties

60-Day Warranty

Your purchase includes 60 days of SuperBreakers warranty coverage.

Get a Quote

Don’t see what you’re looking for?

We source obsolete and hard-to-find parts every day.

Shipping

Free Shipping Policy

Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.

Read our full shipping policy

Same Day Shipping

We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.

Expedited Shipments

Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.

International Shipping

All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.