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Square D KHL3622522DC1616 Molded Case Circuit Breaker
- 225A
- 3 Pole
- Unit Mount
Square D
KHL3622522DC1616
Molded Case Circuit Breaker
Brand
Square D
SKU
KHL3622522DC1616
Quantity
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Square D KHL3622522DC1616 - 225A 3 Pole Molded Case Circuit Breaker
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Description
A robust solution for industrial facilities, the KHL3622522DC1616 is a 3-pole, 225A thermal-magnetic MCCB from Square D's K-frame series. It is engineered to mount into Square D switchboards, motor control centers, and standalone enclosures. What sets this unit apart is its specialized 600VDC rating, making it ideal for demanding direct current applications. Furthermore, the breaker is factory-equipped with a 24VDC undervoltage trip and a 1A/1B auxiliary switch for comprehensive protection.Specifications
| Brand | Square D |
|---|---|
| Part Number | KHL3622522DC1616-R |
| Series | KHL |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 600VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 20kA @ 600VDC |
| 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, 600VDC Rated |
Product FAQs
7 answersWhat equipment is compatible with the KHL3622522DC1616 circuit breaker?
This legacy K-Frame breaker is designed for unit-mount installation in Square D enclosures, switchboards, and motor control centers. It uses a feed-thru connection type rather than an I-Line plug-on configuration.
What type of conductors can be landed on the KHL3622522DC1616 terminals?
The factory-installed feed-thru lugs are dual-rated for both aluminum and copper conductors, accepting wire sizes from 4 AWG up to 350 kcmil.
What do the suffixes in the KHL3622522DC1616 catalog number indicate?
The suffixes indicate that this breaker is factory-equipped with internal accessories. Specifically, it includes a 24VDC undervoltage release (UVR) and a 1A/1B auxiliary switch for remote signaling and control.
Is the KHL3622522DC1616 suitable for high-voltage DC applications?
Yes, this breaker is rated for direct current systems up to 600VDC with a 20kA interrupting capacity. It is commonly used in industrial DC applications where standard AC breakers are not rated to safely extinguish DC arcs.
How is the thermal-magnetic trip unit configured on this breaker?
The trip unit provides Long-Time and Instantaneous (LI) protection. The thermal element for overload protection is fixed at 225 amps, while the magnetic element for instantaneous short-circuit protection is adjustable to coordinate with downstream devices.
How does the included undervoltage release (UVR) improve system safety?
The 24VDC UVR automatically trips the breaker if the control voltage drops below a predetermined safe level. This prevents connected machinery from operating during brownouts or restarting unexpectedly when power is restored.
Is the KHL3622522DC1616 a current production model?
No, this is a legacy Square D K-Frame molded case circuit breaker. While it remains available for direct replacement in existing switchboards and enclosures, new installations typically utilize the modern PowerPact series.
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