Square D KHL361101021 Molded Case Circuit Breaker
- 110A
- 3 Pole
- Unit Mount
Quantity
Square D KHL361101021 - 110A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for commercial and industrial applications, the Square D KHL361101021 is a 3-pole, 110A molded case circuit breaker. It installs into Square D enclosures, switchboards, and motor control centers, providing reliable thermal-magnetic protection. This legacy K-Frame unit features a factory-installed 120-240VAC shunt trip and adjustable magnetic trip settings. Rated for 35kAIC at 480VAC, it serves as a robust solution for existing systems and is replaced by the PowerPacT J-Frame.Specifications
| Brand | Square D |
|---|---|
| Series | KHL |
| Amperage | 110A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | KHL |
|---|---|
| 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 |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs Included, Shunt Trip (Factory Installed) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity |
Product FAQs
7 answersWhat does the 1021 suffix indicate on the KHL361101021?
The 1021 suffix designates a factory-installed 120/240VAC shunt trip. This accessory allows the breaker to be tripped remotely by applying voltage to the shunt trip coil, which is commonly used for emergency shutdowns or automated control systems.
Is the KHL361101021 a direct replacement for older K-Frame breakers?
Yes, the KHL361101021 is a legacy K-Frame breaker that serves as an exact drop-in replacement for existing setups. While the K-Frame series has been superseded by the PowerPacT J-Frame, using this legacy unit avoids the need for retrofit kits or panel modifications.
What is the difference between a KAL and KHL circuit breaker?
The primary difference is the interrupting capacity. The H in KHL stands for high interrupting, whereas KAL is the standard interrupting version. The KHL361101021 is designed for systems with higher available fault currents, offering a 35kA interrupting rating at 480VAC.
How do the trip adjustments work on this thermal-magnetic breaker?
The KHL361101021 utilizes a fixed thermal element for long-time overload protection and an adjustable magnetic element. The adjustable magnetic trip allows electricians to fine-tune the instantaneous short-circuit response to coordinate with downstream devices or specific load inrush characteristics.
Can this unit-mount breaker be installed in an I-Line panelboard?
No. The KHL361101021 is a unit-mount, feed-thru breaker with lugs on both the line and load sides. It is designed for individual enclosures, switchboards, and motor control centers. I-Line panelboards require a breaker with a plug-on jaw connection on the line side.
What are the conductor requirements for the KHL361101021 lugs?
The standard factory lugs are rated for dual-rated aluminum or copper (Al/Cu) conductors. They accept wire gauges ranging from 4 AWG up to 350 kcmil.
Is the KHL361101021 suitable for direct current (DC) circuits?
Yes, this breaker is rated for use in 250VDC systems, providing a 10kA interrupting capacity for DC applications in addition to its standard AC ratings.
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