Square D KH36225G Molded Case Circuit Breaker
- 225A
- 3 Pole
- I-Line
Quantity
Square D KH36225G - 225A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Delivering specialized protection, the Square D KH36225G is a 3-pole, 225A molded case circuit breaker. It is designed for industrial environments that demand advanced ground fault capabilities. This K-Frame breaker mounts into standard Square D I-Line panelboards and switchboards. When replacing this unit with the newer JJA36225, users must verify their specific ground fault requirements. It includes a factory-installed ground fault shunt trip and provides a 35kAIC rating at 480V.Specifications
| Brand | Square D |
|---|---|
| Part Number | KH36225G |
| Series | KH |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | KH |
|---|---|
| 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 | Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included, Ground Fault Shunt Trip (Factory Installed) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity |
Product FAQs
7 answersWhat panelboards are compatible with the KH36225G?
This K-Frame breaker is designed exclusively for Square D I-Line panelboards and switchboards. It features an I-Line style plug-in connection that mounts directly onto the bus assembly for fast, secure installation.
What does the G suffix mean in the KH36225G catalog number?
In Square D K-Frame breakers, the G suffix indicates that the breaker includes a factory-installed ground fault feature, such as a ground fault shunt trip or module, providing equipment ground fault protection.
What is the difference between the KH36225G and the KA36225?
While both are 225A, 3-pole K-Frame breakers for I-Line panels, the KH36225G has a higher interrupting capacity (35kA vs 25kA at 480V AC) and includes factory-installed ground fault protection, which is indicated by the G suffix.
Is the KH36225G suitable for high-fault commercial applications?
Yes, as a high-interrupting KH-frame breaker, it provides a 35kA interrupting capacity at 480V AC and 65kA at 240V AC. This makes it suitable for commercial and industrial systems with higher available fault currents than standard KA-frame breakers can handle.
Is the trip unit on the KH36225G adjustable?
Yes, the thermal-magnetic trip unit features a fixed long-time thermal element for overload protection and an adjustable instantaneous magnetic element, allowing electricians to fine-tune the short-circuit response based on the specific load.
What type of wire can be used with the KH36225G lugs?
The factory lugs are dual-rated for both aluminum and copper conductors, accepting wire sizes from 4 AWG up to 350 kcmil.
Can I use this breaker in a 240V or 480V system?
Yes, although it has a maximum voltage rating of 600V AC, it is fully compatible with 240V and 480V AC systems, as well as 250V DC systems. The interrupting capacity increases at lower voltages, reaching 65kA at 240V AC.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- DPDouglas P.ReviewingSquare D KH36225 - 225A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/26/23I got it the next
I got it the next day and it worked just like it should. Thank you