Siemens HHED63B090 Molded Case Circuit Breaker

The HHED63B090 mounts into Siemens Sentron panelboards, specifically the P1, P2, and P3 series, as well as compatible switchboards and motor control centers. It requires a 3-inch unit space for installation.

Yes, Siemens acquired ITE and continued manufacturing the ED frame product line. The Siemens HHED63B090 is a direct, drop-in replacement for the older ITE HHED63B090, sharing the exact same physical dimensions and mounting hardware.

While rated for 250VDC, Siemens guidelines for thermal-magnetic MCCBs generally require wiring two poles in series, placing one pole on each leg of the DC supply circuit to ensure proper voltage distribution and arc interruption.

Yes, standard Siemens ED frame thermal-magnetic circuit breakers are suitable for reverse feeding. However, if the breaker is ordered with factory-installed line and load lugs, it may be marked with Line and Load designations and cannot be reverse fed per UL 489.

The standard replacement lug kit for 30A to 100A ED frame breakers is the Siemens LN1E100. These aluminum body lugs accept 10 to 1/0 AWG copper or aluminum wire.

The prefix indicates the short-circuit interrupting tier. The HHED6 is the extra-high interrupting version of the ED frame, providing significantly higher fault protection (65kA at 480VAC) compared to the standard ED4 or ED6 models, while maintaining the exact same physical footprint.

No, Siemens ED frame circuit breakers feature a non-interchangeable thermal-magnetic trip unit. The breaker is factory-sealed and the amperage rating cannot be modified in the field.

Yes, this breaker is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment that requires group motor protection.