Square D FHL36050 Molded Case Circuit Breaker | 50A 3-Pole 600V Feed-Thru
Square D FHL36050 Molded Case Circuit Breaker | 50A 3-Pole 600V Feed-Thru
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Square D FHL36050 – 50 Amp 3-Pole 600V Feed-Thru Molded Case Circuit Breaker
The Square D FHL36050 is a heavy-duty thermal magnetic molded case circuit breaker engineered for demanding three-phase industrial and commercial power distribution systems. Rated at 50 Amps, 3 Poles, and 600 VAC, this FHL Series breaker delivers reliable overcurrent protection with a feed-thru connection design — making it the go-to choice for applications requiring both line-side and load-side lug terminals in a single unit.
Part of Schneider Electric's trusted FHL Series, the FHL36050 meets UL 489 standards and is built for long service life in switchboards, panelboards, and industrial control panels where space and performance both matter.
Key Specifications
| Part Number | FHL36050 |
| Manufacturer | Square D / Schneider Electric |
| Series | FHL (F-Frame) |
| Current Rating | 50 Amps |
| Number of Poles | 3-Pole |
| Voltage Rating | 600 VAC / 250 VDC |
| Phase | 3-Phase |
| Trip Type | Thermal Magnetic (LI – Long-Time & Instantaneous) |
| Connection Type | Feed-Thru (Line & Load Side Lug Terminals) |
| Interrupting Rating | 65 kAIC @ 240V | 25 kAIC @ 480V | 18 kAIC @ 600V |
| Frame | F-Frame |
Product Features
- Feed-Thru Connection: Includes both line-side and load-side lug terminals, ideal for daisy-chaining circuits and reducing wiring complexity in distribution panels.
- Thermal Magnetic Trip: LI (Long-Time and Instantaneous) trip functions provide dual-layer protection — thermal for sustained overloads, magnetic for short-circuit events.
- High Interrupting Capacity: Up to 65 kAIC at 240V ensures the breaker can safely clear high-fault-current scenarios without damage to equipment or personnel.
- 3-Pole Design: Simultaneous interruption of all three phases ensures complete circuit isolation during a fault event.
- UL Listed: Meets UL 489 standards for molded case circuit breakers, ensuring compliance with North American electrical codes.
- F-Frame Construction: Robust molded case housing for durability in industrial environments.
Common Applications
- Industrial switchboards and panelboards
- Commercial power distribution systems
- Motor branch circuit protection
- HVAC and mechanical equipment panels
- Manufacturing facilities requiring 600V three-phase protection
- Retrofit and replacement for existing FHL Series installations
Why Choose the Square D FHL36050?
Square D (Schneider Electric) has been a benchmark in electrical protection for over a century. The FHL Series is specifically designed for applications where standard interrupting ratings fall short — delivering high fault-clearing performance at 600V without oversizing your panel. The feed-thru terminal design simplifies installation and reduces the need for additional junction points, saving both time and materials on complex distribution jobs.
Whether you're replacing a failed breaker, upgrading an existing panel, or specifying for a new installation, the FHL36050 is a proven, code-compliant solution trusted by electrical contractors and engineers across North America.
Frequently Asked Questions
What is the interrupting rating of the Square D FHL36050?
The FHL36050 has an interrupting rating of 65 kAIC at 240V, 25 kAIC at 480V, and 18 kAIC at 600V, making it suitable for high fault-current industrial environments.
What does "Feed-Thru" mean on a circuit breaker?
A feed-thru circuit breaker includes lug terminals on both the line side and load side of the breaker. This allows conductors to pass through the breaker's terminals, enabling downstream distribution without additional splices or junction boxes.
Is the FHL36050 the same as the FAL36050?
No. While both are Square D F-Frame 3-pole 50A breakers, the FHL Series offers a higher interrupting rating and feed-thru connection type, whereas the FAL Series is a standard interrupting model without feed-thru terminals.
What series does the FHL36050 belong to?
The FHL36050 belongs to Square D's FHL Series (F-Frame, High Interrupting, Lug/Feed-Thru), part of Schneider Electric's thermal magnetic molded case circuit breaker family.
Is this breaker compatible with I-Line panelboards?
The FHL36050 is a unit-mount / lug-terminal feed-thru breaker and is not an I-Line plug-in type. Verify your panel's mounting requirements before ordering. Contact us if you need assistance confirming compatibility.