Skip to main content
Expedited shipping available at checkout

Square D KIL36150 Molded Case Circuit Breaker

  • 150A
  • 3 Pole
  • Unit Mount
Square D KIL36150
Molded Case Circuit Breaker
Brand Square D
SKU KIL36150
Select Item Condition
Earn 2006 SuperPoints
  • 150A
  • 3 Pole
  • Unit Mount

Quantity

Bulk Pricing
Send your parts list for a volume quote.
Square D KIL36150 3 Pole Circuit Breaker

Square D KIL36150 - 150A 3 Pole Molded Case Circuit Breaker

Re-Certified

$2,006.34 In Stock

Quantity

Similar Items

Description

A reliable solution for high-fault environments, the Square D KIL36150 provides robust current-limiting protection in a 150A package. This three-pole unit utilizes thermal-magnetic trip units with adjustable magnetic settings to defend commercial and industrial circuits. It mounts into Square D switchboards, enclosures, and motor control centers, offering an impressive 200kAIC rating at 480V. As a legacy K-frame component, it is replaced by the JRL36150 for new installations.

Specifications

Key specifications
Brand Square D
Part Number KIL36150
Series KIL
Amperage 150A
Poles 3
Mounting Style Unit Mount
Voltage 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC
Phase 3
AIC Rating 200kA @ 240VAC, 200kA @ 480Y/277VAC, 200kA @ 480VAC, 100kA @ 600Y/347VAC, 100kA @ 600VAC
Fit and installation
Frame Type KIL
Terminal Type Lugs
For Use With Square D Enclosures, Switchboards, Motor Control Centers
Wire Gauge 4 AWG-350 kcmil (Al/Cu)
Max Wire 350 kcmil
Min Wire 4 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
Accessories Line and Load Lugs Included
Standards CSA C22.2 No. 5, IEC 60947-2, UL 489
Approval CE, CSA, UL
Temp Rating 40C
Construction Features Current Limiting, HACR Rated
Special Features Current Limiting

Product FAQs

4 answers
What types of panels and enclosures is the Square D KIL36150 compatible with?

The KIL36150 is a unit-mount, feed-thru circuit breaker designed for use in compatible Square D enclosures, switchboards, and motor control centers. Because it is a unit-mount breaker, it bolts directly to the backpan or mounting surface and does not plug into I-Line panelboard busbars.

What does the I in the KIL frame designation indicate?

The I indicates that this is an I-Limiter current-limiting circuit breaker. It is engineered to interrupt massive fault currents and restrict let-through energy, providing a high interrupting rating of up to 200kAIC at 480V to protect downstream equipment from thermal and magnetic stress.

How does the LI trip unit on the KIL36150 function?

The LI designation stands for Long-Time and Instantaneous trip functions. It features a fixed thermal element for standard overload protection and an adjustable magnetic element, allowing you to tune the instantaneous short-circuit trip threshold to accommodate specific inrush currents without nuisance tripping.

Is the Square D KIL36150 still in active production?

The KIL36150 is part of Square D's legacy K-Frame series and is no longer manufactured for new designs. While it remains available for maintaining existing legacy systems, new installations typically require the modern PowerPact J-Frame equivalent, such as the JRL36150.

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.