Part of the legacy JL frame series, this 225A, two-pole molded case circuit breaker provides reliable commercial and industrial power distribution. It is engineered for 240V, 480V, and 600VAC systems requiring thermal-magnetic protection. Designed as an exact replacement, it installs into Siemens P4, P5, and older ITE FC or S-Series panelboards. For modern upgrades, this unit is replaced by the JD62B225. Delivering a 35kA interrupting capacity at 480V, it features an interchangeable trip unit.
Interchangeable Trip Unit, Trip-Free Mechanism, Quick-Make/Quick-Break, Common Trip
Product FAQs
5 answers
Which panelboards are compatible with the JL2B225 circuit breaker?
This bolt-on breaker is designed for installation in Siemens P4 and P5 panelboards, Siemens switchboards, and legacy ITE FC or S-Series panelboards.
What wire sizes are accepted by the terminals on the JL2B225?
The standard lugs accommodate 4 AWG through 350 kcmil copper or aluminum conductors.
How is the trip unit configured on this JL frame breaker?
It features a thermal-magnetic trip unit with fixed thermal overload protection and an adjustable magnetic instantaneous trip, allowing you to tune the short-circuit response to match specific load requirements.
Can the trip unit be swapped out on this model?
Yes, this breaker features an interchangeable trip unit. The thermal-magnetic trip block can be removed and replaced without having to replace the entire breaker frame.
Can this Siemens breaker replace older ITE JL models?
Yes, Siemens acquired ITE and continued manufacturing the same JL frame. This breaker serves as a direct drop-in replacement for legacy ITE JL2B225 breakers.
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