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Square D FCL34090 Molded Case Circuit Breaker
- 90A
- 3 Pole
- Unit Mount
Square D
FCL34090
Molded Case Circuit Breaker
Brand
Square D
SKU
FCL34090
Quantity
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Square D FCL34090 - 90A 3 Pole Molded Case Circuit Breaker
New
Quantity
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Square D FCL34090 - 90A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | FCL34090 |
| Series | FCL |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D Enclosures, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 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, 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 |
| Special Features | Current Limiting |
Sold out
Quantity
Square D FCL34090 - 90A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | FCL34090-R |
| Series | FCL |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D Enclosures, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 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, 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 |
| Special Features | Current Limiting |
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Description
Designed for high-fault environments, this 90A current-limiting MCCB delivers exceptional protection by minimizing let-through current during short circuits. The 3-pole FCL34090 features a unit-mount configuration, making it suitable for Square D enclosures, switchboards, and motor control centers. With a robust 65 kAIC rating at 480VAC and 100 kAIC at 240VAC, this thermal-magnetic breaker ensures reliable performance for demanding commercial and industrial power distribution applications.Specifications
| Brand | Square D |
|---|---|
| Part Number | FCL34090 |
| Series | FCL |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D Enclosures, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 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, 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 |
| Special Features | Current Limiting |
Product FAQs
7 answersIs the Square D FCL34090 still actively manufactured?
The FCL34090 is a legacy F-Frame circuit breaker that has been discontinued by Schneider Electric. For new installations, it has been superseded by the modern PowerPact H-Frame series, though the FCL34090 remains available for exact replacements in existing equipment.
What does the current limiting feature of the FCL34090 do?
As an I-Limiter circuit breaker, the FCL34090 is designed to minimize let-through energy during a severe short circuit. This high-speed contact separation provides enhanced protection for downstream equipment in high-fault environments.
Where can the FCL34090 circuit breaker be installed?
This unit-mount breaker is designed for use in compatible Square D enclosures, switchboards, and motor control centers that accept legacy F-Frame molded case circuit breakers.
Does the FCL34090 have adjustable trip settings?
No, this breaker features a fixed thermal and fixed magnetic trip unit. It provides standard long-time and instantaneous protection without adjustable dials.
How does the FCL34090 mount into a panel?
It is a unit-mount, lug-in and lug-out circuit breaker. It bolts directly to the mounting pan or enclosure rather than plugging onto a busbar.
Is the FCL34090 suitable for HVAC applications?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment.
Can the FCL34090 be used in an I-Line panelboard?
No, the FCL34090 is a unit-mount breaker designed for lug connections. It does not have the plug-on jaw connections required for Square D I-Line panelboards.
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