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Square D IK34225 Molded Case Circuit Breaker
- 225A
- 3 Pole
- I-Line
Square D
IK34225
Molded Case Circuit Breaker
Brand
Square D
SKU
IK34225
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Square D IK34225 - 225A 3 Pole Molded Case Circuit Breaker
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Description
Engineered as an I-Limiter, the Square D IK34225 is a 225A, 3-pole molded case circuit breaker for commercial power distribution. It provides robust thermal-magnetic protection with an adjustable magnetic trip. This unit mounts into Square D I-Line panelboards. While it is a legacy K-Frame component, it is officially replaced by the JRA36225 for new installations. With a 200kAIC rating at 480V, its current-limiting design minimizes let-through energy during severe electrical faults.Specifications
| Brand | Square D |
|---|---|
| Part Number | IK34225-R |
| Series | IK |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards |
| 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 |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, Visual Trip Indicator |
| Special Features | Current Limiting |
Product FAQs
7 answersWhich panelboards are compatible with the IK34225?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It features a plug-on I-Line connection that ratchets directly onto the bus stack, eliminating the need for separate bus connectors.
How much mounting space does this breaker require in an I-Line panel?
As a 3-pole K-Frame breaker, it requires 4.5 inches of vertical mounting space on the I-Line bus. Each pole takes up 1.5 inches of space.
What is the benefit of the current limiting feature on this breaker?
Current limiting breakers are designed to clear severe electrical faults in less than a half-cycle. This rapid response significantly reduces the peak let-through current and energy, minimizing thermal and mechanical stress on downstream electrical equipment.
How does the LI trip unit function on this breaker?
The LI designation means it provides Long-Time and Instantaneous protection. The fixed thermal element handles sustained overloads, while the adjustable magnetic element allows you to set the specific threshold for instantaneous short-circuit tripping.
What type of wire can be used with the standard lugs?
The factory lugs are dual-rated for both aluminum and copper conductors. They accept wire sizes ranging from 4 AWG up to 350 kcmil.
Is the IK34225 a current production model?
The IK series is a legacy K-Frame component. While it is still widely sourced for replacements in existing I-Line panels, Square D has superseded this frame with the modern PowerPact J-Frame series for new installations.
Can the IK34225 be installed in a 600V system?
No, this specific catalog number is rated for a maximum of 480V AC. Applications requiring 600V protection will need a different breaker, such as the IK36225.
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