The FJA160155 SQUARE D 1P 15A 347V C PH I LINE circuit breaker is designed for optimal performance in commercial and industrial settings. This single-pole breaker provides reliable protection and efficient operation for your electrical systems. Ideal for 347V applications, it ensures safety and durability to meet your circuit needs.
| Brand | Square D |
|---|---|
| Type | Standard (Thermal-Magnetic) |
| Amperage | 15 A |
| Poles | 1-Pole |
| Voltage | 347V |
| Interrupting Rating | 25 kA |
| Mounting | Plug-In |
| Frame / Series | FJA |
| Catalogue # | SQDFJA160155 |
The Square D FJA160155 is a 1-pole, 15A, 347V, 25kA plug-in molded-case circuit breaker in the FJA frame. As a commercial/industrial MCCB rated for 347V (phase-to-neutral of a 600V system), it is designed for installation in compatible Square D panelboards and switchboards — not residential loadcentres. It suits 347/600V three-phase commercial distribution systems commonly found in Canadian industrial and commercial buildings.
Specific panelboard compatibility depends on the bus configuration and plug-in slot dimensions of your switchboard or panelboard. Send us your panelboard model and we'll confirm fit before you order.
The 347V rating refers to the phase-to-neutral voltage of a standard Canadian 347/600V three-phase wye distribution system — the most common commercial and industrial voltage in Canada. This breaker is specifically designed for that system, making it well suited for lighting panels and other 347V branch circuits in commercial and industrial buildings.
In most cases, yes — Square D FJA-frame breakers share a common plug-in footprint, so the FJA160155 (1P, 15A, 347V, 25kA) is generally a like-for-like replacement for a failed or obsolete FJA-frame unit of the same pole and rating. However, you should verify that your panelboard's interrupting rating and bus ratings meet or exceed the breaker's 25kA AIC. Contact our team with your panelboard details and we'll confirm compatibility.
Square D's FJA frame series has seen limited production in recent years, and availability can be constrained. Northern Breaker Group specialises in obsolete and hard-to-find breakers, so even if this unit is no longer in active manufacture, we can often source tested surplus or reconditioned stock. Reach out to one of our Calgary, Edmonton, or Vancouver counters for a quote and availability check.
