Part of the legacy E-Frame family, this 100-amp, three-pole breaker delivers robust thermal-magnetic protection for commercial facilities. The bolt-on design installs into Siemens P2 and P3 panelboards, alongside older ITE enclosures. It serves as an exact match for existing setups, though it is replaced by the ED23B100 in modern catalogs. Featuring a 10kA interrupting capacity at 240VAC, this HACR-rated unit includes load side lugs and supports reverse feed applications.
CSA C22.2 No. 5, HACR Rated, IEC 60947-2, NEMA AB 1, UL 489
Approval
CSA, UL
Temp Rating
40C
Construction Features
HACR Rated, Reverse Feed, Common Trip, Trip-Free Mechanism
Product FAQs
6 answers
What panelboards are compatible with the Siemens E23B100?
This breaker is designed to bolt directly into Siemens P2 and P3 panelboards, as well as legacy ITE enclosures.
Can the Siemens E23B100 replace an older ITE E23B100?
Yes. Siemens acquired ITE, making this the exact drop-in replacement for the legacy ITE E23B100 circuit breaker.
What wire sizes and materials are supported by the E23B100 lugs?
The terminal lugs accommodate 10 AWG to 1/0 AWG wire and are rated for both copper (Cu) and aluminum (Al) conductors.
Are the trip settings adjustable on the E23B100?
No. This breaker features a fixed thermal magnetic trip unit with non-adjustable long-time and instantaneous (LI) trip functions.
What frame size is the E23B100?
It is part of the legacy Siemens and ITE E-Frame family, specifically the E2 frame type.
What safety procedures apply when installing this bolt-on breaker?
Always de-energize the panelboard and verify the power is completely off using a properly rated voltage tester before bolting the breaker to the busbar.
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