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Siemens / ITE CJ3B225 Molded Case Circuit Breaker
- 225A
- 3 Pole
- Bolt-On
Siemens / ITE
CJ3B225
Molded Case Circuit Breaker
Brand
Siemens / ITE
SKU
CJ3B225
Quantity
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Siemens / ITE CJ3B225 - 225A 3 Pole Molded Case Circuit Breaker
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Description
Part of the legacy Cordon series, this 225A MCCB delivers high-capacity current limiting for industrial applications. The bolt-on unit installs into existing ITE and Siemens switchboards or motor control centers. It serves as an exact replacement, or can be substituted by the CJD63B225 using a retrofit kit. Featuring thermal-magnetic trip technology, it provides reliable LI protection with a 100kA interrupting rating at 480VAC.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | CJ3B225-R |
| Series | CJ |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 100kA @ 480VAC, 100kA @ 600VAC, 100kA @ 250VDC |
| Frame Type | CJ |
|---|---|
| Terminal Type | Lugs |
| For Use With | ITE / Siemens Switchboards, Motor Control Centers, CDP Panelboards |
| Wire Gauge | 4 AWG - 300 kcmil (Cu), 2 AWG - 300 kcmil (Al) |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Amp-Trap Current Limiters |
| Standards | UL 489, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, Interchangeable Trip Unit, High Interrupting Capacity |
| Special Features | Current Limiting (Integrally Fused) |
Product FAQs
7 answersWhat types of enclosures and panels are compatible with the CJ3B225?
This bolt-on molded case circuit breaker is designed for installation in legacy ITE and Siemens switchboards, motor control centers, and CDP panelboards.
What wire sizes and materials are accepted by the standard lugs on this breaker?
The terminals accommodate 4 AWG to 300 kcmil copper (Cu) conductors, or 2 AWG to 300 kcmil aluminum (Al) conductors.
How does the adjustable magnetic trip function operate on the CJ3B225?
This breaker features a fixed thermal element for standard overload protection combined with an adjustable magnetic trip. This allows installers to dial in the instantaneous short-circuit response threshold for proper selective coordination with downstream devices.
Does the CJ3B225 provide current-limiting protection?
Yes, it is a current-limiting circuit breaker. It is designed to clear high-level faults rapidly, offering a 100kAIC interrupting rating at 480VAC to minimize let-through energy and protect sensitive downstream equipment.
What does the LI trip function code indicate on this breaker?
The LI designation means the trip unit provides Long-Time overload protection and Instantaneous short-circuit protection. It does not include Short-Time or Ground Fault tripping functions.
Is this breaker suitable for direct current (DC) systems?
Yes, in addition to its standard AC ratings, the CJ3B225 is rated for use in DC applications up to 250VDC, where it maintains a 100kAIC interrupting capacity.
What is the recommended replacement for the legacy CJ3B225 circuit breaker?
The CJ3B225 serves as an exact drop-in replacement for existing Cordon series installations. If a newer frame is required, it can be substituted by the Siemens Sentron series CJD63B225, provided the correct retrofit kit is used for the enclosure.
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