Designed for maximum system safety, the Square D IF34030 is a 30A, 3-pole molded case circuit breaker. As part of the I-Limiter family, it restricts peak let-through current to safeguard sensitive downstream commercial and industrial equipment. The breaker features a plug-on I-Line connection for quick integration into compatible Square D panelboards. If upgrading, the HRA36030 is the modern replacement. It boasts an exceptional 200kAIC interrupt rating at 480VAC for heavy-duty applications.
Current Limiting, HACR Rated, Common Trip, Trip-Free Mechanism
Special Features
Current Limiting
Product FAQs
5 answers
What panelboards are compatible with the Square D IF34030?
This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It features an I-Line style plug-in connection for quick integration without the need for bolt-on hardware.
How does the I-Limiter design affect fault current?
As a current limiting breaker, the IF34030 restricts peak let-through current during a short circuit. This rapid fault clearing protects sensitive downstream equipment and reduces thermal and magnetic stress on the electrical system.
What wire sizes are accepted by the lugs on the IF34030?
The factory lugs accommodate 14 to 4 AWG copper or 12 to 4 AWG aluminum conductors. Always verify that the wire insulation rating matches the application requirements before terminating.
What is the modern replacement for the legacy IF34030?
The IF34030 is a legacy I-Limiter series breaker. The Square D PowerPact HRA36030 is the recommended modern replacement for I-Line panelboard applications.
How does the thermal-magnetic trip unit operate on this breaker?
The IF34030 utilizes fixed long-time and instantaneous (LI) trip functions. The thermal element responds to sustained overloads by heating and tripping the breaker, while the magnetic element provides immediate tripping when exposed to high-level short circuits.
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