Square D KHB36100 Molded Case Circuit Breaker
- 100A
- 3 Pole
- I-Line
Quantity
Square D KHB36100 - 100A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Engineered for commercial power distribution, the Square D KHB36100 is a 3-pole, 100A molded case circuit breaker with thermal-magnetic LI protection. This K-Frame breaker mounts into Square D I-Line panelboards and switchboards using a secure bolt-tighten plug-in connection. For modern facility upgrades, this unit is replaced by the PowerPacT H-Frame HJA36100. Rated for 600VAC, it delivers a 35kAIC interrupting capacity at 480VAC. The breaker is HACR rated and includes load-side lugs.Specifications
| Brand | Square D |
|---|---|
| Part Number | KHB36100-R |
| Series | KHB |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 10kA @ 250VDC |
| 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 |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Visual Trip Indicator |
Product FAQs
8 answersWhat panelboards accept the KHB36100 circuit breaker?
The KHB36100 is specifically designed for Square D I-Line panelboards and switchboards. It utilizes a plug-on line connection with a bolt-tighten feature that secures directly to the I-Line bus assembly.
Does the KHB36100 require a separate mounting bracket or hardware kit?
No. As an I-Line style breaker, it features an integrated plug-in mounting mechanism with a built-in retaining bolt. It installs directly onto the panelboard bus without the need for external mounting brackets.
What wire sizes and materials are supported by the load lugs on this breaker?
The factory-installed load-side lugs on the KHB36100 accept either aluminum or copper conductors ranging from 4 AWG to 350 kcmil.
What is the modern replacement for the legacy KHB36100?
For modern facility upgrades, this legacy K-Frame breaker is typically replaced by the Square D PowerPacT H-Frame series, such as the HJA36100. The PowerPacT H-Frame I-Line breakers mount into the same panelboards while offering updated trip technology.
Are there lugs on both the line and load sides of the KHB36100?
No. The line side uses an I-Line plug-on jaw connection to attach directly to the panelboard bus. Mechanical lugs for wire termination are only located on the load side.
Is the KHB36100 suitable for direct current (DC) systems?
Yes, this thermal-magnetic breaker is rated for DC applications up to 250 VDC, providing a 10 kA interrupting capacity for industrial control or battery backup circuits.
Are the trip settings adjustable on the KHB36100?
The KHB36100 features a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection.
What is the maximum interrupting capacity of the KHB36100?
As a high-interrupting K-Frame breaker, the KHB36100 is engineered to safely clear severe fault currents, offering a maximum interrupting capacity of 65 kA at 240 VAC and 35 kA at 480 VAC.
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