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Square D IK36225 Molded Case Circuit Breaker
- 225A
- 3 Pole
- I-Line
Square D
IK36225
Molded Case Circuit Breaker
Brand
Square D
SKU
IK36225
Quantity
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Square D IK36225 - 225A 3 Pole Molded Case Circuit Breaker
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Description
Part of the legacy I-Limiter series, this 225A molded case circuit breaker provides robust overcurrent protection for commercial and industrial facilities. It is specifically designed to restrict let-through energy during severe fault conditions. This three-pole breaker mounts into Square D I-Line panelboards and switchboards. For newer installations, it has been replaced by the JRA36225 model. Rated at an impressive 200 kAIC at 480V, it features an adjustable magnetic trip mechanism.Specifications
| Brand | Square D |
|---|---|
| Part Number | IK36225-R |
| Series | IK |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480VAC, 100kA @ 600VAC |
| 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, Padlock Attachment |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, HACR Rated, Visual Trip Indicator, Non-Interchangeable Trip, Common Trip, Trip-Free Mechanism |
| Special Features | Current Limiting |
Product FAQs
7 answersWhat type of panelboards accept the IK36225 breaker?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It utilizes a specialized plug-on jaw connection for the line side and will not fit in standard NQ, NF, or QO load centers.
What is the benefit of the current-limiting feature on the IK36225?
As a current-limiting breaker, it is engineered to clear high-level short circuits extremely fast, typically within a half-cycle. This drastically reduces the peak let-through current and energy, providing enhanced protection for downstream electrical components and wiring.
How is the line-side connection made on this I-Line breaker?
The IK36225 features a plug-on jaw connection that mounts directly onto the bus stack of an I-Line panelboard. The breaker is then secured with a mounting bracket, while the load side uses standard mechanical lugs for wire termination.
How does the adjustable magnetic trip function on this breaker?
The IK36225 features a thermal-magnetic trip unit with a fixed thermal (overload) setting and an adjustable magnetic (instantaneous short-circuit) setting. Adjusting the magnetic dial allows electricians to coordinate the breaker with other protective devices and prevent nuisance tripping from motor inrush currents.
Is the IK36225 part of a current or legacy product line?
The IK frame is classified as a legacy molded case circuit breaker by Square D. While newer installations often utilize the PowerPact series, the IK36225 remains fully compatible as a direct replacement in existing I-Line panelboards.
What does the LI trip function code indicate on this breaker?
The LI designation means the breaker provides Long-Time (L) and Instantaneous (I) protection. The Long-Time function protects against sustained overloads, while the Instantaneous function protects against sudden short circuits.
Are the load-side lugs on the IK36225 rated for aluminum wiring?
Yes, the factory-installed mechanical lugs are dual-rated for both aluminum and copper conductors. They accept wire sizes from 4 AWG up to 350 kcmil.
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