The QRH22B250L is a molded case circuit breaker from Siemens, built for commercial and industrial applications. As part of the SENTRON QR frame series, this two-pole device provides robust electrical protection. It utilizes a unit mount design, fitting seamlessly into Siemens enclosures, meter centers, and switchboards. Serving as an exact replacement for the legacy QJ22B250L, it includes line and load lugs. Rated for 25kAIC at 240VAC, it features fixed thermal magnetic LI protection.
What types of equipment are compatible with the QRH22B250L breaker?
This QR frame breaker is designed for use in Siemens enclosures, meter centers, and switchboards.
What wire size and material does the QRH22B250L accept?
The factory-installed lugs accept 250 to 300 kcmil copper (Cu) wire only.
How does this breaker mount into a panel?
The QRH22B250L is a unit mount, feed-thru circuit breaker. It does not plug onto a busbar but instead uses lugs on both the line and load sides for cable-in, cable-out connections.
What type of trip unit is installed in the QRH22B250L?
It features a fixed thermal magnetic trip unit with long-time and instantaneous (LI) protection functions.
Does the H in QRH22B250L indicate a specific rating?
Yes, the H designates a higher interrupting capacity. This breaker is rated for 25kA at 240V AC, compared to standard QR breakers which typically have a 10kA rating.
Can the QRH22B250L replace older QJ frame breakers?
Yes, Siemens QR frame breakers serve as exact drop-in replacements for discontinued QJ frame breakers.
What does the L at the end of the QRH22B250L part number mean?
The L indicates that the breaker comes with factory-installed line and load lugs.
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Customers rate this product 5.0 out of 5 based on 1 review.