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Square D FHL16020 Molded Case Circuit Breaker
- 20A
- 1 Pole
- Unit Mount
Square D
FHL16020
Molded Case Circuit Breaker
Brand
Square D
SKU
FHL16020
Quantity
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Square D FHL16020 - 20A 1 Pole Molded Case Circuit Breaker
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Description
Rated for high interrupting capacity, this 20A single-pole F-frame breaker delivers reliable thermal-magnetic protection for commercial systems. It features a 65kAIC rating at 240VAC and supports 480Y/277VAC networks. The unit fastens into Square D enclosures, switchboards, and motor control centers using standard lug connections. When upgrading older infrastructure, this legacy component is replaced by the PowerPact BGL16020. It includes factory-installed line and load lugs for quick wiring.Specifications
| Brand | Square D |
|---|---|
| Part Number | FHL16020 |
| Series | FHL |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480Y/277VAC, 10kA @ 125VDC |
| Frame Type | FHL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Enclosures, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG (Cu/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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | UL 489, CSA C22.2 No. 5, NEMA AB 1 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated, High Interrupting Capacity |
Product FAQs
7 answersWhat is the modern replacement for the legacy Square D FHL16020?
The FHL16020 is an obsolete F-frame breaker. When upgrading older infrastructure, it is typically replaced by the Square D PowerPact B-frame series, such as the BGL16020. Note that retrofitting a PowerPact breaker into an older enclosure may require different mounting hardware or adapters.
What does the "H" in the FHL16020 part number signify?
In Square D's legacy F-frame nomenclature, the "H" indicates a high interrupting rating compared to the standard FAL series. This allows the FHL16020 to safely clear higher fault currents in commercial and industrial distribution systems.
Can I install the FHL16020 in an I-Line panelboard?
No. The FHL16020 is a unit-mount (feed-thru) circuit breaker equipped with line and load lugs. It is not designed for I-Line plug-on panelboards, which require breakers with specialized plug-in jaw connectors like the FHA or HDA series.
What are the wiring requirements for the FHL16020 lugs?
The factory-installed line and load lugs accept 14 AWG to 1/0 AWG copper or aluminum conductors. When terminating, ensure the wire is properly stripped and the lugs are torqued to the manufacturer specifications printed on the breaker faceplate to prevent thermal issues.
How does the thermal-magnetic trip unit in the FHL16020 operate?
The LI (Long-Time and Instantaneous) trip unit provides dual-layer circuit protection. The fixed thermal element responds to sustained overloads by heating a bimetallic strip, while the fixed magnetic element provides immediate tripping during high-current short-circuit events.
Can the FHL16020 be used in DC applications?
Yes, this breaker is rated for use in DC circuits up to 125VDC with a 10kA interrupting rating. This makes it suitable for specific control panels, battery backup systems, and other industrial DC applications requiring reliable overcurrent protection.
What safety standards does the FHL16020 meet?
The FHL16020 is UL Listed and CSA certified for use in molded case circuit breaker applications. Always ensure installation is performed by a qualified electrical professional in accordance with the National Electrical Code (NEC) and local regulations.
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Reviews
Review summary
Customers rate this product 4.7 out of 5 based on 3 reviews.
Total 5 star reviews: 2 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
3 reviews
- CBChris B.Verified BuyerReviewingSquare D FHL36000M1586 - 100A 3 Pole Automatic Molded Case SwitchI recommend this productRated 5 out of 5 stars7/24/26Re-certified Breaker for Trane RTU's
We received the breaker quickly and it was the exact match for the equipment we needed. The breaker looks like new, solved out problem quickly.
- JFJeremy F.ReviewingSquare D FHL26090 - 90A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/2/22Great Product
Great pricing. Easy ordering.
- MGMichael G.ReviewingSquare D FHL36060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars5/21/18Great prices !!
Great prices and normally fast shipping times. Did have a little confusion with shipping updates.