Square D JJL36225 Molded Case Circuit Breaker

No. The JJL36225 is a unit-mount circuit breaker configured with line and load lugs. For I-Line panelboards, you need a JJA-configured breaker, which features the required plug-on jaws on the line side.

The magnetic (instantaneous) trip on this 225A circuit breaker is adjustable from a low setting of 1,125A to a high setting of 2,250A. The thermal overload trip is fixed.

This breaker comes standard with AL250JD lugs on both the line and load sides. When using the supported 3/0 AWG to 350 kcmil aluminum or copper wire, the required tightening torque is 221 lb-in (25 N-m).

No, this is an 80% rated circuit breaker. For continuous loads operating for three hours or more, the maximum sustained current should not exceed 180A, which is 80% of its 225A rating, in accordance with the National Electrical Code.

Yes. The PowerPacT J-frame series is designed to accept field-installable internal accessories, including shunt trips, undervoltage releases, and auxiliary or alarm switches, without requiring a factory modification.

In the Square D PowerPacT nomenclature, the L signifies that the breaker is a unit-mount configuration equipped with lugs on both the line and load sides. This differentiates it from the A suffix, which denotes an I-Line plug-on configuration.

Yes, the JJL36225 is UL Listed and CSA Certified as a current-limiting circuit breaker. Its design includes dual-break rotating contacts that help reduce peak current and let-through energy during a short-circuit fault.

Yes, standard unit-mount PowerPacT J-frame thermal-magnetic circuit breakers with sealed trip units are suitable for reverse-fed applications. This allows them to be used as back-fed main breakers when correctly installed and labeled.