BJA34025 SQUARE D 3P 25A 480/277V 65KA I LINE

The BJA34025 is an I-Line plug-in breaker, designed for Square D I-Line panelboards and switchboards — such as NQ and NF series enclosures — used in commercial and industrial settings. It is not interchangeable with QO or Homeline residential loadcentres. Contact us with your panelboard model number and we'll confirm compatibility.

Square D's BJA frame I-Line breakers can be difficult to find through standard distribution channels. Northern Breaker Group specialises in obsolete and hard-to-find breakers, so we maintain access to both new and fully reconditioned stock. Reach out to our Calgary, Edmonton, or Vancouver counter for availability and a quote.

The 65kA interrupting capacity means the BJA34025 can safely clear a fault current of up to 65,000 amperes at 480/277V without catastrophic failure. This high AIC rating makes it suitable for commercial and industrial panels located close to utility transformers or other high-fault-current sources. Always verify that the breaker's interrupting rating meets or exceeds the available fault current at your panel — your electrical engineer or authority having jurisdiction (AHJ) can confirm this per Canadian Electrical Code requirements.