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Square D KI36200 Molded Case Circuit Breaker

  • 200A
  • 3 Pole
  • I-Line
Square D KI36200
Molded Case Circuit Breaker
Brand Square D
SKU KI36200
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  • 200A
  • 3 Pole
  • I-Line

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KI36200

Square D KI36200 - 200A 3 Pole Molded Case Circuit Breaker

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$1,999.70 In Stock

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Description

Built for demanding industrial applications, the Square D KI36200 is a 3-pole, 200A thermal-magnetic circuit breaker with long-time and instantaneous trip functions. It installs into Square D I-Line panelboards and switchboards, utilizing a plug-on connection for efficient setup. Delivering a massive 200kAIC rating at 480VAC, this current-limiting breaker handles severe fault conditions. As a legacy K-frame device, it is commonly cross-referenced and replaced by the newer JRA36200 model.

Specifications

Key specifications
Brand Square D
Part Number KI36200-R
Series KI
Amperage 200A
Poles 3
Mounting Style I-Line
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 KI
Terminal Type Lugs
For Use With Square D I-Line Panelboards and Switchboards
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 Load Side Lugs Included
Standards CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489
Approval CE, CSA, UL
Temp Rating 40C
Construction Features Current Limiting, HACR Rated

Product FAQs

7 answers
What type of panelboards are compatible with the KI36200?

This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It utilizes a plug-on connection on the line side and mechanical lugs on the load side.

How does the I-Line mounting system work on this breaker?

The I-Line design allows the breaker to plug directly into the panelboard bus assembly for a fast, secure line-side connection. The load side uses traditional mechanical lugs that accept 4 AWG to 350 kcmil copper or aluminum conductors.

What does the adjustable magnetic trip function allow me to do?

The adjustable magnetic trip lets you tune the instantaneous short-circuit response to coordinate with other protective devices in your system. The thermal overload protection remains fixed.

Is the KI36200 a current or legacy breaker?

The KI36200 is a legacy K-frame molded case circuit breaker. For modern Square D installations, it is commonly cross-referenced and replaced by the PowerPact J-frame series, such as the JRA36200. Always verify that the replacement meets your required interrupting capacity.

Is the KI36200 a current-limiting circuit breaker?

Yes, the KI frame is designed as a current-limiting breaker. It provides a very high interrupting rating of 200kAIC at 480V, allowing it to quickly clear severe fault conditions in industrial power distribution systems.

Does the KI36200 use an electronic or thermal-magnetic trip unit?

It features a traditional thermal-magnetic trip unit with LI (Long-Time and Instantaneous) protection. It does not have an electronic Micrologic trip unit, which is typically found on newer or larger frame breakers.

What safety and testing standards does the KI36200 meet?

This breaker is UL Listed, CSA Certified, and CE Marked. It meets UL 489 and NEMA AB 1 standards for molded case circuit breakers in commercial and industrial applications.

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