Designed to restrict let-through energy, this 20A current-limiting molded case circuit breaker ensures superior protection for commercial power systems. The thermal-magnetic trip mechanism responds quickly to overloads, minimizing equipment damage. This unit-mount breaker fits standard Square D switchboards, motor control centers, and individual enclosures. As a legacy component, it is replaced by the HRL36020 model. Equipped with Visi-Trip, it provides a 200kAIC rating at 480V.
CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489
Approval
CE, CSA, UL
Temp Rating
40C
Construction Features
Current Limiting, HACR Rated, Visual Trip Indicator, Non-Interchangeable Trip
Special Features
Current Limiting
Product FAQs
7 answers
What type of equipment is the FIL36020 designed to fit?
This legacy F-frame breaker is a unit-mount component designed for Square D switchboards, motor control centers, and individual enclosures. It is not compatible with I-Line panelboards.
How does the current-limiting design affect the interrupting rating of the FIL36020?
The current-limiting thermal-magnetic trip mechanism restricts let-through energy during a fault. This allows the breaker to achieve a high interrupting rating of 200kAIC at 480V, minimizing potential damage to downstream commercial power systems.
What does the LI trip function code indicate on this breaker?
The LI designation means the breaker provides Long-Time and Instantaneous trip functions. The long-time function protects against sustained overloads, while the instantaneous function provides immediate tripping during severe short circuits.
What are the wire size requirements for the terminal lugs?
The feed-thru lugs on this breaker accommodate both copper and aluminum conductors ranging from 14 AWG to 4 AWG. Ensure proper torque is applied during installation to maintain a secure connection.
Can the trip curve be adjusted for specific load requirements?
No, this breaker utilizes a fixed thermal and fixed magnetic trip unit. The long-time and instantaneous trip functions cannot be adjusted in the field.
What is the modern replacement for the legacy FIL36020 circuit breaker?
Because the F-frame series is a legacy product, the modern equivalent is the Square D PowerPact H-frame series. The HRL36020 is the direct replacement, offering the same 20A capacity, 600VAC rating, and 200kAIC at 480V.
What are the primary safety considerations when installing this molded case circuit breaker?
Installation must be performed by a qualified electrician. Always de-energize the switchboard or enclosure before mounting the breaker. Verify that the available fault current does not exceed the 200kAIC rating at 480V or 100kAIC at 600V to prevent catastrophic failure during a short circuit.
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