Operating as a core component of the Sentron family, the Siemens CJD63B225 is a 225A molded case circuit breaker. It utilizes thermal-magnetic technology with long-time and instantaneous (LI) functions to secure industrial circuits. This JD frame breaker is built for unit mounting, fitting into Siemens P4 and P5 panelboards, switchboards, and enclosures. It requires separate lug kits for wire termination. With a robust 150 kAIC rating at 480V, this fuseless breaker supports reverse feed.
Current Limiting, HACR Rated, Non-Interchangeable Trip, Reverse Feed
Product FAQs
4 answers
What is the difference between the Siemens JD63B225, HJD63B225, and CJD63B225?
These breakers share the same 225A JD frame and physical dimensions but differ in their interrupting ratings. The JD63B225 is the standard interrupting version, the HJD63B225 is the high interrupting version, and the CJD63B225 is the current-limiting ultra-high interrupting version rated at 150kAIC at 480VAC.
What does the C in the CJD63B225 catalog number indicate?
The C designates this as a current-limiting fuseless molded case circuit breaker. It provides ultra-high interrupting capacity, allowing it to clear high-level fault currents quickly without the need for external fuses.
What is the magnetic trip adjustment range for the CJD63B225?
The CJD63B225 features a fixed thermal trip and an adjustable magnetic trip. The instantaneous magnetic trip range can be adjusted from 1250A to 2500A using the dial on the front of the breaker.
Which panelboards and enclosures are compatible with the CJD63B225?
This unit mount breaker is designed for use in Siemens P4 and P5 panelboards, as well as compatible Siemens switchboards and standalone enclosures. It requires the appropriate strap kit or mounting hardware specific to the panelboard type for proper installation.
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