Square D KHL3612517DC1616 Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
Quantity
Square D KHL3612517DC1616 - 125A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Built to handle specialized industrial loads, the Square D KHL3612517DC1616 is a 3-pole, 125-amp molded case circuit breaker with thermal-magnetic trip technology. Designed with a unit-mount configuration, this K-Frame breaker integrates easily into Square D enclosures, switchboards, and motor control centers. A key differentiator is its 500VDC rating, making it suitable for demanding direct current applications. It features an adjustable magnetic trip and provides 65 kAIC at 240VAC.Specifications
| Brand | Square D |
|---|---|
| Part Number | KHL3612517DC1616-R |
| Series | KHL |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 20kA @ 500VDC |
| Frame Type | K |
|---|---|
| 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 | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs (AL250KA) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, Visual Trip Indicator, Trip-Free Mechanism, 500VDC Rated |
Product FAQs
5 answersWhat type of equipment will accept the KHL3612517DC1616?
This unit-mount breaker is designed for hardwired feed-thru installation in standard Square D enclosures, industrial switchboards, and motor control centers.
Can this breaker be used in both AC and DC electrical systems?
Yes. While it is heavily utilized in 500VDC applications, this thermal-magnetic breaker is also fully rated for AC systems up to 600VAC, providing flexibility for diverse industrial power distribution setups.
What are the acceptable wire sizes for the terminals on this breaker?
The standard line and load lugs accommodate either copper or aluminum conductors ranging from 4 AWG to 350 kcmil.
How does the trip unit operate on the KHL3612517DC1616?
It features a thermal-magnetic trip unit that provides long-time fixed thermal protection against overloads and an adjustable instantaneous magnetic response to quickly clear short circuits.
What is the modern replacement for the legacy Square D KHL series?
The KHL is a legacy K-Frame breaker. For new installations or complete panel upgrades, Schneider Electric has replaced this line with the modern PowerPacT J-Frame series, such as the JGL36125. However, this KHL model remains available for direct drop-in replacements in existing equipment.
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