Square D FHL36100-1021 Molded Case Circuit Breaker
- 100A
- 3 Pole
- Unit Mount
Quantity
Square D FHL36100-1021 - 100A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Designed for remote shutdown capabilities, this 100A thermal-magnetic breaker incorporates a 120-240VAC shunt trip mechanism. It supports industrial operations where automated or emergency tripping is necessary. Fastening via standard unit mounting hardware, the component integrates into Square D switchboards. Maintenance teams replacing this unit can utilize the PowerPact HGL36100SA along with a retrofit kit. Rated for 65kAIC at 240V, the F-frame device mitigates severe fault currents.Specifications
| Brand | Square D |
|---|---|
| Part Number | FHL36100-1021 |
| Series | FHL |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | FHL |
|---|---|
| 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 | Auxiliary Switch, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Lugs (AL100FA), Shunt Trip (Factory Installed) |
| Standards | UL 489, CSA C22.2 No. 5, NEMA AB 1, IEC 60947-2 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity |
Product FAQs
8 answersWhat does the "-1021" suffix indicate on the FHL36100-1021?
The "-1021" suffix designates a factory-installed 120/240VAC shunt trip accessory. This allows the breaker to be tripped remotely via an external control signal, which is commonly used for emergency shutdown or fire alarm integration.
What equipment is compatible with this unit-mount breaker?
As a feed-thru, unit-mount F-frame breaker, it is designed for installation in compatible Square D enclosures, switchboards, and motor control centers. It is not compatible with I-Line panelboards, which require plug-on mounting.
How is the FHL36100-1021 physically installed?
This is a unit-mount circuit breaker, meaning it bolts directly to a backpan or mounting plate within an enclosure or switchboard. It uses feed-thru lug connections for both the line and load sides.
What are the acceptable wire sizes for the FHL36100-1021 lugs?
The standard lugs on this breaker accept 14 AWG to 1/0 AWG copper (Cu) conductors, or 12 AWG to 1/0 AWG aluminum (Al) conductors. Ensure proper torque specifications are followed during installation.
Can the trip settings on the FHL36100-1021 be adjusted in the field?
No, this breaker features a fixed thermal-magnetic trip unit. Both the long-time (overload) and instantaneous (short circuit) trip functions are factory-set and non-adjustable.
Is this breaker suitable for direct current (DC) systems?
Yes, in addition to its AC ratings, the FHL36100-1021 is rated for use in DC applications up to 250VDC.
Does this breaker include ground fault equipment protection (GFEP)?
No, the FHL36100-1021 provides standard thermal-magnetic protection against overloads and short circuits only. It does not feature ground fault or arc fault sensing capabilities.
Can I use the FHL36100-1021 to replace an older F-frame breaker?
Yes, this breaker can replace legacy Square D F-frame unit-mount breakers with matching specifications (100A, 3-pole, 600VAC). However, verify that your application requires the 120/240VAC shunt trip included with this specific "-1021" model.
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Reviews
Review summary
Customers rate this product 4.7 out of 5 based on 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.