Square D IL34350 Molded Case Circuit Breaker
- 350A
- 3 Pole
- I-Line
Quantity
Square D IL34350 - 350A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Part of the legacy I-Limiter series, this 350A molded case circuit breaker delivers exceptional current-limiting performance for demanding industrial applications. It features a robust 200kAIC rating at 480VAC to effectively isolate downstream equipment from severe electrical faults. Designed specifically for Square D I-Line panelboards and switchboards, it utilizes a plug-on mounting system for secure installation. This unit is commonly replaced by the modern PowerPact LIL36350 frame.Specifications
| Brand | Square D |
|---|---|
| Part Number | IL34350-R |
| Series | IL |
| Amperage | 350A |
| 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 and Switchboards |
| Wire Gauge | 1 AWG - 600 kcmil (Al/Cu) or (2) 1 AWG - 250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| 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 |
| Special Features | Current Limiting |
Product FAQs
7 answersWhat type of panelboards is the IL34350 designed for?
This breaker is specifically designed for use in Square D I-Line panelboards and switchboards. It utilizes a plug-on mounting system for secure installation onto the busbar stack.
Is there a modern replacement for the legacy IL34350 breaker?
Yes, the IL34350 is part of the legacy I-Limiter series and is commonly replaced by the modern Square D PowerPact LIL36350 frame.
What wire sizes are accepted by the lugs on this 350A breaker?
The terminal lugs accept either a single 1 AWG to 600 kcmil aluminum or copper wire, or dual 1 AWG to 250 kcmil aluminum or copper wires per phase.
What does the LI trip function indicate on this breaker?
The LI designation means this thermal-magnetic breaker provides Long-Time and Instantaneous protection against overloads and short circuits. Both the thermal and magnetic trip settings are fixed.
Is the IL34350 considered a current-limiting circuit breaker?
Yes, it is a current-limiting molded case circuit breaker. It is designed to quickly isolate downstream equipment from severe electrical faults.
How does the I-Line mounting style work for this breaker?
The I-Line mounting style features a plug-on design that connects directly to the busbar stack in Square D I-Line panelboards. This allows for faster installation compared to traditional bolt-on breakers.
Why is the 200kAIC rating significant for this breaker?
The 200kAIC rating at both 240VAC and 480VAC indicates this breaker can safely interrupt extremely high fault currents. This makes it suitable for demanding industrial applications with high available short-circuit current.
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