Square D EJB34060 Miniature Circuit Breaker

No, the EJB34060 is an E-frame bolt-on circuit breaker designed specifically for use in Square D NF lighting panelboards. I-Line panelboards require completely different I-Line group mounted breakers.

The J indicates the interrupting rating tier within the E-frame family. The EJB series provides the highest interrupting capacity of 65kA at 480Y/277VAC. This is a step up from the standard EDB series at 18kA and the high-interrupting EGB series at 35kA.

Yes. The EJB34060 shares the same physical dimensions and bolt-on footprint as the EDB34060 and EGB34060. It can be installed as a direct replacement in an NF panel when a higher fault current rating is required by a system coordination study.

The factory lugs require a tightening torque of 34.5 lb-in for 14 to 10 AWG wire, and 49.6 lb-in for 8 to 2/0 AWG wire.

As a 3-pole E-frame breaker, it mounts onto the NF panelboard bus and occupies three standard breaker spaces.

No. The EJB34060 comes equipped with standard mechanical lugs that are dual-rated to accept both copper and aluminum conductors within the specified wire range.

No, the base EJB34060 provides standard thermal magnetic overload and short circuit protection via its fixed long-time and instantaneous trip functions. If your application requires 30mA equipment protection, you will need the EPD variant, such as catalog number EJB34060EPD.