Built to handle demanding commercial loads, this 30A single-pole MCCB delivers dependable protection. The unit belongs to the rugged Sentron family. The bolt-on configuration ensures a secure connection within Siemens P1, P2, and P3 panelboards, alongside SB switchboards. Load side lugs accommodate 10-1/0 AWG wire. Carrying a 10kAIC rating at 120VAC, this device is HACR rated for heating and cooling equipment and allows for reverse feeding.
Which panelboards accept the ED21B030, and how much space does it require?
This bolt-on breaker mounts in Siemens P1, P2, and P3 panelboards, as well as SB switchboards. As a 1-pole ED frame breaker, it requires exactly 1 inch of unit space on the bus.
Is the Siemens ED21B030 suitable for HVAC equipment?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment.
Can the ED21B030 be reverse fed?
Yes, this thermal magnetic breaker does not have line or load restrictions and is suitable for reverse feeding applications.
Can I add a shunt trip or auxiliary switch to this breaker?
Yes, internal accessories can be added to ED frame breakers. However, installing an accessory on a 1-pole ED breaker will require an additional 1 inch of unit space in your panelboard.
What is the difference between the Siemens ED21B030, ED41B030, and ED61B030?
While all three are 30-amp, 1-pole ED frame breakers, they have different voltage and interrupting ratings. The ED21B030 is rated 10kAIC at 120VAC. The ED41B030 offers a higher interrupting capacity of 65kAIC at 120VAC, and the ED61B030 is rated for 30kAIC at 347VAC.
Can I install this Siemens breaker in a GE or Eaton panel?
No. Siemens ED frame breakers are only UL listed for use in compatible Siemens panelboards and switchboards. Installing them in other brands violates the UL listing and creates a safety hazard.
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