Built for commercial power distribution, this 40A thermal-magnetic breaker offers fixed trip protection for three-phase systems up to 600VAC. It installs into Siemens P1, P2, and P3 panelboards, as well as SB switchboards, utilizing a secure bolt-on connection. The ED6 frame unit features a 25kAIC rating at 480V, includes load-side lugs, and supports reverse feeding. Facilities upgrading older infrastructure should note this model is eventually replaced by the 3VA5 series with a retrofit kit.
What type of panelboards is the ED63B040 compatible with?
This breaker features a bolt-on mounting style designed specifically for use in Siemens P1, P2, and P3 panelboards, as well as SB series switchboards.
Which lugs are included with the ED63B040, and what is the wire range?
This ED frame breaker includes standard load-side lugs, specifically the LN1E100 lug kit. These lugs accept 10 AWG to 1/0 AWG copper or aluminum wire.
Can this breaker replace older ITE model ED63B040 breakers?
Yes, the Siemens ED63B040 is the direct replacement for the older ITE ED63B040. They share the same physical dimensions and Sentron ED6 frame profile.
Is the ED63B040 rated for direct current (DC) systems?
Yes, in addition to standard AC ratings up to 600VAC, this thermal magnetic breaker is rated for 30kAIC at 250VDC, making it suitable for industrial DC control panels or battery backup applications.
Can the thermal or magnetic trip settings be adjusted on this breaker?
No, the ED63B040 features a fixed, non-interchangeable thermal magnetic trip unit for both long-time and instantaneous protection.
Is there a difference between ED63B040 and US2:ED63B040?
No, US2:ED63B040 is simply the extended catalog format used in the Siemens global part numbering system. Both part numbers refer to the exact same 40-amp, 3-pole ED6 frame breaker.
Can I install this ED63B040 breaker as a standalone unit outside of a panelboard?
Yes, but it must be installed in an appropriate NEMA-rated molded case circuit breaker enclosure. You will need a compatible Siemens ED-frame enclosure to ensure proper mounting and safety compliance.
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