Rated for 10kAIC at 240VAC, the Siemens E23B040 is a 3-pole, 40A molded case circuit breaker designed for commercial applications. It provides reliable thermal-magnetic protection with fixed long-time and instantaneous trip functions. This unit mount MCCB serves as an exact drop-in replacement for discontinued ITE and Siemens E-Frame models. It installs seamlessly into older P1, P2, and P3 panelboards, as well as SB switchboards. The HACR-rated breaker supports reverse feed installations.
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Rated 5.0 out of 5 stars
Based on 25 reviews
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Reviews Summary
Generated by AI from 30 most recent customer reviews
Last updated 8/15/25
Customers say this electrical breaker meets their expectations in terms of functionality and performance. Many reviews mention quick delivery times and competitive pricing. While one user reports voltage detection issues, most find these units work effectively. Common feedback includes satisfaction with product condition upon arrival and straightforward installation. Reviews indicate availability of specialty models that are often hard to find through local suppliers.