Engineered for industrial applications, the Siemens CED63B125 is a 3-pole, 125A molded case circuit breaker. It provides reliable thermal-magnetic protection with fixed long-time and instantaneous (LI) trip functions. This unit-mount ED-frame breaker installs into Sentron panelboards and switchboards. For system upgrades, it is replaced by the 3VA6112-7HL31-0AA0 model. Rated for 200 kAIC at 480VAC, this current-limiting device restricts let-through energy to protect downstream equipment.
Current Limiting, HACR Rated, Non-Interchangeable Trip, Trip-Free Mechanism, Quick-Make/Quick-Break
Special Features
Current Limiting
Product FAQs
7 answers
Which panelboards are compatible with the CED63B125 circuit breaker?
This unit mount breaker is designed for installation in Siemens Sentron panelboards and switchboards that accept ED frame breakers.
How does the CED frame differ from standard ED4 or ED6 breakers?
The CED63B125 is a current limiting circuit breaker. It provides significantly higher interrupting ratings, up to 200kA at 480VAC, compared to standard ED frame breakers, offering enhanced short-circuit protection for downstream components.
What wire sizes are accepted by the standard lugs on this breaker?
The included lugs accept 3 to 3/0 AWG copper conductors or 1 to 2/0 AWG aluminum conductors.
Can the CED63B125 be utilized in DC voltage systems?
Yes, this thermal magnetic breaker is rated for DC applications. It provides an interrupting capacity of 50kA at 250VDC and 30kA at 500VDC.
Can I use this breaker as a replacement for an older HED4 or HED6?
Yes, the CED63B125 shares the same physical footprint as other Siemens ED frame breakers. It can be used as a direct bolt-on upgrade when a higher interrupting capacity or current limiting functionality is required.
Is this breaker suitable for DIN rail mounting?
No, the CED63B125 is a unit mount, bolt-on circuit breaker designed for direct bolting into compatible panelboards or switchboards. It does not support DIN rail installation.
Are the thermal and magnetic trip settings adjustable on this model?
No, the CED63B125 features fixed thermal and fixed magnetic trip elements for its long-time and instantaneous (LI) protection functions. They cannot be field-adjusted.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.