Siemens / ITE KL3B225 Molded Case Circuit Breaker
- 225A
- 3 Pole
- Bolt-On
Quantity
Siemens / ITE KL3B225 - 225A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Engineered for commercial applications, the Siemens KL3B225 is a 225A, 3-pole MCCB from the legacy K-Frame series. It provides reliable thermal-magnetic overcurrent protection. This bolt-on breaker installs into legacy ITE panelboards, including CDP-6, CDP-7, FC-I, and SB-1 models. It serves as an exact fit without requiring the adapter kits needed for the newer JXD63B225 substitute. Rated at 30kAIC at 480VAC, this HACR-rated unit features an interchangeable trip unit.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | KL3B225-R |
| Series | KL |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | KL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Legacy ITE Panelboards (e.g., CDP-6, CDP-7, FC-I, SB-1) |
| Wire Gauge | 1 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 1 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 | Load Side Lugs Included |
| Standards | NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip Unit |
Product FAQs
5 answersWhich panelboards are compatible with the KL3B225 circuit breaker?
This bolt-on breaker is designed for legacy ITE and Siemens distribution equipment. It is compatible with panelboards and switchboards such as the CDP-6, CDP-7, FC-I, and SB-1 series.
What conductor sizes are accepted by the lugs on this breaker?
The standard terminals accommodate aluminum or copper wire ranging from 1 AWG to 500 kcmil. Ensure proper torque specifications are followed during installation to maintain a secure connection.
How is the trip unit configured on the KL3B225?
It features a thermal magnetic trip unit with Long-Time and Instantaneous (LI) functions. The thermal overload protection is fixed at 225A, while the magnetic instantaneous trip threshold is adjustable to help coordinate with inrush currents and downstream devices.
Is this breaker suitable for direct current (DC) circuits?
Yes, in addition to its AC ratings, this breaker is rated for 250VDC applications with a 10kA interrupting capacity.
Does the breaker include the necessary panelboard mounting hardware?
As a bolt-on breaker, it requires a specific mounting strap kit or connector kit that matches your exact panelboard chassis (such as CDP or FC-I). These hardware kits are typically sourced separately based on the panel type.
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